1
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Silva MO, Moreira GM, Rosado J, Blanco F, García G, Bettega MHF, da Costa RF. Elastic and electronically inelastic scattering of electrons by the pyrazine molecule. Phys Chem Chem Phys 2024; 26:7276-7286. [PMID: 37987761 DOI: 10.1039/d3cp04619b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
We report on elastic and electronically inelastic integral and differential cross sections as well as ionization and total cross sections for electron collisions with the pyrazine molecule. The Schwinger multichannel method is applied in calculations carried out according to the minimal orbital basis for single configuration interactions strategy from the 1-channel up to 139-channels close-coupling level of approximation. With these calculations we have obtained integral and differential cross sections as well as excitation functions for elastic electron scattering and, also, integral and differential cross sections for electronic excitation from the ground state to the 3B1u, 3B2u, 3B3u, 1B1u, 1B2u and 1B3u excited states of pyrazine by electron impact. By summing the total ionization cross section obtained by means of the binary-encounter-Bethe model to these elastic and electronically inelastic contributions, we provided an estimate for the total cross section describing the electron-pyrazine interaction process. The independent atom model with the screening-corrected additivity rule plus interference terms method was also used in the present study to determine elastic integral and differential as well as ionization and total cross sections for electron collisions from pyrazine. The present results were, whenever possible, critically compared to the experimental and theoretical data available in the literature. In general, the overall agreement between the present results and the experiment is quite encouraging.
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Affiliation(s)
- Murilo O Silva
- Departamento de Física, Universidade Federal do Paraná, Caixa Postal 19044, 81531-980 Curitiba, Paraná, Brazil
| | - Giseli M Moreira
- Departamento de Física, Universidade Estadual do Centro-Oeste, 85040-167 Guarapuava, Paraná, Brazil
| | - Jaime Rosado
- Departamento de Estructura de la Materia, Física Térmica y Electrónica e IPARCOS, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Francisco Blanco
- Departamento de Estructura de la Materia, Física Térmica y Electrónica e IPARCOS, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Gustavo García
- Instituto de Física Fundamental, Consejo Superior de Investigaciones Científicas, 28006 Madrid, Spain
| | - Márcio H F Bettega
- Departamento de Física, Universidade Federal do Paraná, Caixa Postal 19044, 81531-980 Curitiba, Paraná, Brazil
| | - Romarly F da Costa
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, 09210-580 Santo André, São Paulo, Brazil.
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2
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Nicolanti F, Caccia B, Cartoni A, Emfietzoglou D, Faccini R, Incerti S, Kyriakou I, Satta M, Tran HN, Mancini-Terracciano C. Calculation of electron interaction models in N 2 and O 2. Phys Med 2023; 114:102661. [PMID: 37703804 DOI: 10.1016/j.ejmp.2023.102661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 06/19/2023] [Accepted: 08/05/2023] [Indexed: 09/15/2023] Open
Abstract
Cosmic rays have the potential to significantly affect the atmospheric composition by increasing the rate and changing the types of chemical reactions through ion production. The amount and states of ionization, and the spatial distribution of ions produced are still open questions for atmospheric models. To precisely estimate these quantities, it is necessary to simulate particle-molecule interactions, down to very low energies. Models enabling such simulations require interaction probabilities over a broad energy range and for all energetically allowed scattering processes. In this paper, we focus on electron interaction with the two most abundant molecules in the atmosphere, i.e., N2 and O2, as an initial step. A set of elastic and inelastic cross section models for electron transportation in oxygen and nitrogen molecules valid in the energy range 10 eV - 1 MeV, is presented. Comparison is made with available theoretical and experimental data and a reasonable good agreement is observed. Stopping power is calculated and compared with published data to assess the general consistency and reliability of our results. Good overall agreement is observed, with relative differences lower than 6% with the ESTAR database.
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Affiliation(s)
- F Nicolanti
- Physics Dep., Sapienza U. of Rome, p.le Aldo Moro, 5, 00185, Rome, Italy; INFN, Sec. of Rome, p.le Aldo Moro, 2, 00185, Rome, Italy.
| | - B Caccia
- ISS(Italian National Institute of Health), V. Regina Elena, 299, 00161, Rome, Italy
| | - A Cartoni
- Chemistry Dep., Sapienza U. of Rome, p.le Aldo Moro, 5, 00185, Rome, Italy
| | - D Emfietzoglou
- Med. Phys. Lab., Dept of Medicine, University of Ioannina, 45110, Ioannina, Greece
| | - R Faccini
- Physics Dep., Sapienza U. of Rome, p.le Aldo Moro, 5, 00185, Rome, Italy; INFN, Sec. of Rome, p.le Aldo Moro, 2, 00185, Rome, Italy
| | - S Incerti
- Université de Bordeaux, CNRS, LP2I Bordeaux, UMR 5797, Chemin du Solarium, 19, 33170, Gradignan, France
| | - I Kyriakou
- Med. Phys. Lab., Dept of Medicine, University of Ioannina, 45110, Ioannina, Greece
| | - M Satta
- Chemistry Dep., Sapienza U. of Rome, p.le Aldo Moro, 5, 00185, Rome, Italy; ISMN-CNR, p. Aldo Moro, 7, 00185, Rome, Italy
| | - H N Tran
- Université de Bordeaux, CNRS, LP2I Bordeaux, UMR 5797, Chemin du Solarium, 19, 33170, Gradignan, France
| | - C Mancini-Terracciano
- Physics Dep., Sapienza U. of Rome, p.le Aldo Moro, 5, 00185, Rome, Italy; INFN, Sec. of Rome, p.le Aldo Moro, 2, 00185, Rome, Italy
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3
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Jones D, Ali E, Chakraborty H, Ning C, García G, Madison D, Brunger M. A dynamical (e,2e) investigation into the ionization of pyrazine. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.139000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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4
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Álvarez L, Costa F, Lozano AI, Oller JC, Muñoz A, Blanco F, Limão-Vieira P, White RD, Brunger MJ, García G. Electron scattering cross sections from nitrobenzene in the energy range 0.4-1000 eV: the role of dipole interactions in measurements and calculations. Phys Chem Chem Phys 2020; 22:13505-13515. [PMID: 32530024 DOI: 10.1039/d0cp02039g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Absolute total electron scattering cross sections (TCS) for nitrobenzene molecules with impact energies from 0.4 to 1000 eV have been measured by means of two different electron-transmission experimental arrangements. For the lower energies (0.4-250 eV) a magnetically confined electron beam system has been used, while for energies above 100 eV a linear beam transmission technique with high angular resolution allowed accurate measurements up to 1000 eV impact energy. In both cases random uncertainties were maintained below 5-8%. Systematic errors arising from the angular and energy resolution limits of each apparatus are analysed in detail and quantified with the help of our theoretical calculations. Differential elastic and integral elastic, excitation and ionisation as well as momentum transfer cross sections have been calculated, for the whole energy range considered here, by using an independent atom model in combination with the screening corrected additivity rule method including interference effects (IAM-SCARI). Due to the significant permanent dipole moment of nitrobenzene, additional differential and integral rotational excitation cross sections have been calculated in the framework of the Born approximation. If we ignore the rotational excitations, our calculated total cross section agrees well with our experimental results for impact energies above 15 eV. Additionally, they overlap at 10 eV with the low energy Schwinger Multichannel method with Pseudo Potentials (SMCPP) calculation available in the literature (L. S. Maioli and M. H. F. Bettega, J. Chem. Phys., 2017, 147, 164305). We find a broad feature in the experimental TCS at around 1.0 eV, which has been related to the formation of the NO2- anion and assigned to the π*(b1) resonance, according to previous mass spectra available in the literature. Other local maxima in the TCSs are found at 4.0 ± 0.2 and 5.0 ± 0.2 eV and are assigned to core excited resonances leading to the formation of the NO2- and O2- anions, respectively. Finally, for energies below 10 eV, differences found between the present measurements, the SMCPP calculation and our previous data for non-polar benzene have revealed the importance of accurately calculating the rotational excitation contribution to the TCS before comparing theoretical and experimental data. This comparison suggests that our dipole-Born calculation for nitrobenzene overestimates the magnitude of the rotational excitation cross sections below 10 eV.
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Affiliation(s)
- L Álvarez
- Instituto de Fisica Fundamental, CSIC, Serrano 113-Bis, E-28006 Madrid, Spain.
| | - F Costa
- Instituto de Fisica Fundamental, CSIC, Serrano 113-Bis, E-28006 Madrid, Spain.
| | - A I Lozano
- Instituto de Fisica Fundamental, CSIC, Serrano 113-Bis, E-28006 Madrid, Spain. and Atomic and Molecular Collisions Laboratory, CEFITEC, Department of Physics, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - J C Oller
- Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Avenida Complutense 22, 28040 Madrid, Spain
| | - A Muñoz
- Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Avenida Complutense 22, 28040 Madrid, Spain
| | - F Blanco
- Departamento de Estructura de la Materia Física Térmica y Electrónica e IPARCOS, Universidad Complutense de Madrid, Plaza de Ciencias 1, 28040 Madrid, Spain
| | - P Limão-Vieira
- Atomic and Molecular Collisions Laboratory, CEFITEC, Department of Physics, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - R D White
- College of Science and Engineering, James Cook University, Townsville, Australia
| | - M J Brunger
- College of Science and Engineering, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia and Department of Actuarial Science and Applied Statistics, Faculty of Business and Information Science UCSI, Kuala Lumpur 56000, Malaysia
| | - G García
- Instituto de Fisica Fundamental, CSIC, Serrano 113-Bis, E-28006 Madrid, Spain. and Centre for Medical Radiation Physics, University of Wollongong, NSW, Australia
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5
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Costa F, Álvarez L, Lozano AI, Blanco F, Oller JC, Muñoz A, Barbosa AS, Bettega MHF, Ferreira da Silva F, Limão-Vieira P, White RD, Brunger MJ, García G. Experimental and theoretical analysis for total electron scattering cross sections of benzene. J Chem Phys 2019; 151:084310. [PMID: 31470731 DOI: 10.1063/1.5116076] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Measurements of the total electron scattering cross sections (TCSs) from benzene, in the impact energy range of 1-1000 eV, are presented here by combining two different experimental systems. The first utilizes a magnetically confined electron transmission beam for the lower energies (1-300 eV), while the second utilizes a linear transmission beam apparatus for the higher energies (100-1000 eV). These cross sections have also been calculated by means of two different theoretical methods, the Schwinger Multichannel with Pseudo Potential (SMCPP) procedure, employing two different approaches to account for the polarization of the target for impact energies between 0.1 and 15 eV, and the Independent Atom Model with the Screening Corrected Additivity Rule including Interference effect (IAM-SCAR+I) paradigm to cover the 10-10 000 eV impact energy range. The present results are compared with available theoretical and experimental data, with the level of accord being good in some cases and less satisfactory in others, and some predicted resonances have been identified. In particular, we found a π* shape resonance at 1.4 eV and another feature in the energy region 4.6-4.9 eV interpreted as a π* resonance (2B2g symmetry), which is a mixture of shape and a core excited resonance, as well as a Feshbach resonance at 5.87 eV associated with the 3s (a1g) Rydberg state. A Born-type formula to extrapolate TCS values for energies above 10 000 eV is also given. This study provides a complete set of TCS data, with uncertainty limits within 10%, ready to be used for modeling electron transport applications.
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Affiliation(s)
- F Costa
- Instituto de Física Fundamental, Consejo Superior de Investigaciones Científicas, Serrano 113-bis, 28006 Madrid, Spain
| | - L Álvarez
- Instituto de Física Fundamental, Consejo Superior de Investigaciones Científicas, Serrano 113-bis, 28006 Madrid, Spain
| | - A I Lozano
- Instituto de Física Fundamental, Consejo Superior de Investigaciones Científicas, Serrano 113-bis, 28006 Madrid, Spain
| | - F Blanco
- Departamento de Estructura de la Materia Física Térmica y Electrónica, Universidad Complutense de Madrid, Plaza de Ciencias 1, 28040 Madrid, Spain
| | - J C Oller
- Departamento de Tecnología, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avenida Complutense 22, 28040 Madrid, Spain
| | - A Muñoz
- Departamento de Tecnología, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avenida Complutense 22, 28040 Madrid, Spain
| | - A Souza Barbosa
- Departamento de Física, Universidade Federal do Paraná, CP 19044, 81531-990 Curitiba, Paraná, Brazil
| | - M H F Bettega
- Departamento de Física, Universidade Federal do Paraná, CP 19044, 81531-990 Curitiba, Paraná, Brazil
| | - F Ferreira da Silva
- Laboratório de Colisões Atómicas e Moleculares, CEFITEC, Departamento de Física, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - P Limão-Vieira
- Laboratório de Colisões Atómicas e Moleculares, CEFITEC, Departamento de Física, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - R D White
- College of Science and Engineering, James Cook University, Townsville, Australia
| | - M J Brunger
- College of Science and Engineering, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia
| | - G García
- Instituto de Física Fundamental, Consejo Superior de Investigaciones Científicas, Serrano 113-bis, 28006 Madrid, Spain
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6
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Gomes M, da Silva DGM, Fernandes ACP, Ghosh S, Pires WAD, Jones DB, Blanco F, García G, Brunger MJ, Lopes MCA. Electron scattering from 1-butanol at intermediate impact energies: Total cross sections. J Chem Phys 2019; 150:194307. [PMID: 31117791 DOI: 10.1063/1.5096211] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We report experimental measurements of the absolute total cross sections (TCSs) for electron scattering from 1-butanol at impact energies in the range 80-400 eV. Those measurements were conducted by considering the attenuation of a collimated electron beam, at a given energy, through a gas cell containing 1-butanol, at a given pressure, and through application of the Beer-Lambert law to derive the required TCS. We also report theoretical results using the Independent-Atom Model with Screening Corrected Additivity Rule and Interference approach. Those results include the TCS, the elastic integral cross section (ICS), the ionization total ICS, and the sum over all excitation process ICSs with agreement at the TCS level between our measured and calculated results being encouraging.
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Affiliation(s)
- M Gomes
- Departamento de Física, Universidade Federal de Juiz de Fora, Juiz de Fora, MG 36036-900, Brazil
| | - D G M da Silva
- Departamento de Física, Universidade Federal de Juiz de Fora, Juiz de Fora, MG 36036-900, Brazil
| | - A C P Fernandes
- Departamento de Física, Universidade Federal de Juiz de Fora, Juiz de Fora, MG 36036-900, Brazil
| | - S Ghosh
- Departamento de Física, Universidade Federal de Juiz de Fora, Juiz de Fora, MG 36036-900, Brazil
| | - W A D Pires
- Departamento de Física, Universidade Federal de Juiz de Fora, Juiz de Fora, MG 36036-900, Brazil
| | - D B Jones
- College of Science and Engineering, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia
| | - F Blanco
- Departamento de Física Atómica, Molecular y Nuclear, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - G García
- Instituto de Física Fundamental, CSIC, Serano 113-bis, 28006 Madrid, Spain
| | - M J Brunger
- College of Science and Engineering, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia
| | - M C A Lopes
- Departamento de Física, Universidade Federal de Juiz de Fora, Juiz de Fora, MG 36036-900, Brazil
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7
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Lozano AI, Álvarez L, Blanco F, Brunger MJ, García G. Total cross section measurements for electron scattering from dichloromethane. J Chem Phys 2018; 149:244304. [PMID: 30599735 DOI: 10.1063/1.5080636] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Using our magnetically confined electron transmission apparatus, we report the results of total cross sections (TCSs) for electron scattering from dichloromethane (CH2Cl2). The energy range of this study is 1-300 eV. Wherever possible, the present data are compared to earlier measured TCSs of Wan et al. [J. Chem. Phys. 94, 1865 (1991)] and Karwasz et al. [Phys. Rev. A 59, 1341 (1999)] and to the corresponding theoretical independent atom model with screening corrected additivity rule and interference term (IAM-SCAR+I) results of Krupa et al. [Phys. Rev. A 97, 042702 (2018)] and a spherical complex optical potential formulation calculation of Naghma et al. [J. Electron Spectrosc. Relat. Phenom. 193, 48 (2014)]. Within their respective uncertainties, the present TCS and those of Karwasz et al. are found to be in very good agreement over their common energy range. However, agreement with the results of Wan et al. is quite poor. The importance of the experimentally inherent 'missing angle' effect (see later) on the measured TCS is investigated and found to be significant at the lower energies studied. Indeed, when this effect is accounted for, agreement between our measured TCSs and the corrected IAM-SCAR+I+rotations calculation results are, for energies above about 3 eV, in good accord (to better than 8%). Finally, we observe two σ * shape resonances, consistent with the earlier electron transmission spectroscopy results of Burrow et al. [J. Chem. Phys. 77, 2699 (1982)], at about 2.8 eV and 4.4 eV incident electron energy, in our measured TCS.
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Affiliation(s)
- A I Lozano
- Instituto de Física Fundamental, CSIC, E-28006 Madrid, Spain
| | - L Álvarez
- Instituto de Física Fundamental, CSIC, E-28006 Madrid, Spain
| | - F Blanco
- Departamento de Física Atómica, Molecular y Nuclear, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - M J Brunger
- College of Science and Engineering, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia
| | - G García
- Instituto de Física Fundamental, CSIC, E-28006 Madrid, Spain
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8
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Lozano AI, Loupas A, Blanco F, Gorfinkiel JD, García G. Total electron scattering cross sections from thiophene for the (1-300 eV) impact energy range. J Chem Phys 2018; 149:134303. [DOI: 10.1063/1.5050349] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Affiliation(s)
- A. I. Lozano
- Instituto de Física Fundamental, Consejo Superior de Investigaciones Científicas, Serrano 113-Bis, 28006 Madrid, Spain
- Escuela de Doctorado de la UNED-Programa de Doctorado en Ciencias, 28015 Madrid, Spain
| | - A. Loupas
- Laboratório de Colisões Atómicas e Moleculares, CEFITEC, Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus de Caparica, 2829-516 Lisbon, Portugal
- School of Physical Sciences, The Open University, Walton Hall, Milton Keynes MK7 6AA, United Kingdom
| | - F. Blanco
- Departamento de Física Atómica, Molecular y Nuclear, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - J. D. Gorfinkiel
- School of Physical Sciences, The Open University, Walton Hall, Milton Keynes MK7 6AA, United Kingdom
| | - G. García
- Instituto de Física Fundamental, Consejo Superior de Investigaciones Científicas, Serrano 113-Bis, 28006 Madrid, Spain
- Centre for Medical Radiation Physics, University of Wollongong, Wollongong, NSW, Australia
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9
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Lozano AI, Oller JC, Jones DB, da Costa RF, Varella MTDN, Bettega MHF, Ferreira da Silva F, Limão-Vieira P, Lima MAP, White RD, Brunger MJ, Blanco F, Muñoz A, García G. Total electron scattering cross sections from para-benzoquinone in the energy range 1-200 eV. Phys Chem Chem Phys 2018; 20:22368-22378. [PMID: 30129642 DOI: 10.1039/c8cp03297a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Total electron scattering cross sections, from para-benzoquinone, for impact energies ranging between 1 to 200 eV, have been obtained by measuring the attenuation of a linear electron beam under magnetic confinement conditions. Random uncertainty limits on these values have been found to be within 5%. Systematic errors, due to the axial magnetic beam conditions in combination with the acceptance angle of the detector, have been evaluated by integrating our calculated independent atom model with the screening corrected additivity rule and interference term elastic differential cross sections over that detection acceptance angle. Our previous calculations and measurements on this molecule (Jones et al., J. Chem. Phys., 2018, 148, 124312 and J. Chem. Phys., 2018, 148, 204305), have been compiled and complemented with new elastic and inelastic scattering cross section calculations in order to obtain a comprehensive cross section data base, within the considered energy range, for modelling purposes. The self-consistency of the present data set has been evaluated by simulating the electron transport of 15 eV electrons in para-benzoquinone, and comparing those results with the observed transmitted intensity distribution.
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Affiliation(s)
- A I Lozano
- Instituto de Fisica Fundamental, CSIC, Serrano 113-bis, E-28006 Madrid, Spain.
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10
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Loupas A, Lozano AI, Blanco F, Gorfinkiel JD, García G. Cross sections for electron scattering from thiophene for a broad energy range. J Chem Phys 2018; 149:034304. [DOI: 10.1063/1.5040352] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Alexandra Loupas
- Laboratório de Colisões Atómicas e Moleculares, CEFITEC, Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus de Caparica, 2829-516 Lisbon, Portugal
- School of Physical Sciences, The Open University, Walton Hall, Milton Keynes MK7 6AA, United Kingdom
| | - Ana. I. Lozano
- Instituto de Física Fundamental, Consejo Superior de Investigaciones Científicas, Serrano 113-bis, 28006 Madrid, Spain
| | - Francisco Blanco
- Departamento de Física Atómica, Molecular y Nuclear, Universidad Complutense de Madrid, Ciudad Universitaria, 28040 Madrid, Spain
| | - Jimena D. Gorfinkiel
- School of Physical Sciences, The Open University, Walton Hall, Milton Keynes MK7 6AA, United Kingdom
| | - Gustavo García
- Instituto de Física Fundamental, Consejo Superior de Investigaciones Científicas, Serrano 113-bis, 28006 Madrid, Spain
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11
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Lozano AI, Oller JC, Krupa K, Ferreira da Silva F, Limão-Vieira P, Blanco F, Muñoz A, Colmenares R, García G. Magnetically confined electron beam system for high resolution electron transmission-beam experiments. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2018; 89:063105. [PMID: 29960528 DOI: 10.1063/1.5030068] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A novel experimental setup has been implemented to provide accurate electron scattering cross sections from molecules at low and intermediate impact energies (1-300 eV) by measuring the attenuation of a magnetically confined linear electron beam from a molecular target. High-resolution electron energy is achieved through confinement in a magnetic gas trap where electrons are cooled by successive collisions with N2. Additionally, we developed and present a method to correct systematic errors arising from energy and angular resolution limitations. The accuracy of the entire measurement procedure is validated by comparing the N2 total scattering cross section in the considered energy range with benchmark values available in the literature.
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Affiliation(s)
- A I Lozano
- Instituto de Física Fundamental, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - J C Oller
- Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, Madrid, Spain
| | - K Krupa
- Instituto de Física Fundamental, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - F Ferreira da Silva
- Laboratório de Colisões Atómicas e Moleculares, CEFITEC, Departamento de Física, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - P Limão-Vieira
- Laboratório de Colisões Atómicas e Moleculares, CEFITEC, Departamento de Física, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - F Blanco
- Departamento de Física Atómica, Molecular y Nuclear, Universidad Complutense de Madrid, Madrid, Spain
| | - A Muñoz
- Centro de Investigaciones Energéticas Medioambientales y Tecnológicas, Madrid, Spain
| | - R Colmenares
- Servicio de Radiofísica, Hospital Universitario Ramón y Cajal, Madrid, Spain
| | - G García
- Instituto de Física Fundamental, Consejo Superior de Investigaciones Científicas, Madrid, Spain
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12
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Dubuis AT, Costa F, da Silva FF, Limão-Vieira P, Oller J, Blanco F, García G. Total electron scattering cross section from pyridine molecules in the energy range 10–1000 eV. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2018.03.065] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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da Silva DGM, Gomes M, Ghosh S, Silva IFL, Pires WAD, Jones DB, Blanco F, Garcia G, Buckman SJ, Brunger MJ, Lopes MCA. Total cross sections for electron scattering by 1-propanol at impact energies in the range 40-500 eV. J Chem Phys 2017; 147:194307. [PMID: 29166110 DOI: 10.1063/1.5008621] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Absolute total cross section (TCS) measurements for electron scattering from 1-propanol molecules are reported for impact energies from 40 to 500 eV. These measurements were obtained using a new apparatus developed at Juiz de Fora Federal University-Brazil, which is based on the measurement of the attenuation of a collimated electron beam through a gas cell containing the molecules to be studied at a given pressure. Besides these experimental measurements, we have also calculated TCS using the Independent-Atom Model with Screening Corrected Additivity Rule and Interference (IAM-SCAR+I) approach with the level of agreement between them being typically found to be very good.
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Affiliation(s)
- D G M da Silva
- Departamento de Física, Universidade Federal de Juiz de Fora, Juiz de Fora, MG 36936-900, Brazil
| | - M Gomes
- Departamento de Física, Universidade Federal de Juiz de Fora, Juiz de Fora, MG 36936-900, Brazil
| | - S Ghosh
- Departamento de Física, Universidade Federal de Juiz de Fora, Juiz de Fora, MG 36936-900, Brazil
| | - I F L Silva
- Departamento de Física, Universidade Federal de Juiz de Fora, Juiz de Fora, MG 36936-900, Brazil
| | - W A D Pires
- Departamento de Física, Universidade Federal de Juiz de Fora, Juiz de Fora, MG 36936-900, Brazil
| | - D B Jones
- College of Science and Engineering, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia
| | - F Blanco
- Departamento de Fisica Atomica, Molecular y Nuclear, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - G Garcia
- Instituto de Física Fundamental, Consejo Superior de Investigaciones Científicas (CSIC), Serrano 113-bis, 28006 Madrid, Spain
| | - S J Buckman
- Plasma Research Laboratories, Research School of Physics and Engineering, Australian National University, Canberra, ACT 0200, Australia
| | - M J Brunger
- College of Science and Engineering, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia
| | - M C A Lopes
- Departamento de Física, Universidade Federal de Juiz de Fora, Juiz de Fora, MG 36936-900, Brazil
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14
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Brunger MJ. Electron scattering and transport in biofuels, biomolecules and biomass fragments. INT REV PHYS CHEM 2017. [DOI: 10.1080/0144235x.2017.1301030] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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15
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Jones DB, da Costa RF, Varella MTDN, Bettega MHF, Lima MAP, Blanco F, García G, Brunger MJ. Integral elastic, electronic-state, ionization, and total cross sections for electron scattering with furfural. J Chem Phys 2016; 144:144303. [DOI: 10.1063/1.4945562] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Affiliation(s)
- D. B. Jones
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia
| | - R. F. da Costa
- Instituto de Física “Gleb Wataghin,” Universidade Estadual de Campinas, Campinas, 13083-859 São Paulo, Brazil
- Departamento de Física, Universidade Federal do Espírito Santo, 29075-910, Vitória, Espírito Santo, Brazil
| | - M. T. do N. Varella
- Instituto de Física, Universidade de São Paulo, CP 66318, 05315-970 São Paulo, Brazil
| | - M. H. F. Bettega
- Departamento de Física, Universidade Federal do Paraná, CP 19044, 81531-990 Curitiba, Paraná, Brazil
| | - M. A. P. Lima
- Instituto de Física “Gleb Wataghin,” Universidade Estadual de Campinas, Campinas, 13083-859 São Paulo, Brazil
| | - F. Blanco
- Departamento de Física Atómica, Molecular y Nuclear, Universidad Complutense de Madrid, Madrid E-28040, Spain
| | - G. García
- Instituto de Física Fundamental, CSIC, Serrano 113-bis, 28006 Madrid, Spain
| | - M. J. Brunger
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia
- Institute of Mathematical Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia
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16
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da Costa RF, do N Varella MT, Bettega MHF, Neves RFC, Lopes MCA, Blanco F, García G, Jones DB, Brunger MJ, Lima MAP. The electron-furfural scattering dynamics for 63 energetically open electronic states. J Chem Phys 2016; 144:124310. [PMID: 27036451 DOI: 10.1063/1.4944616] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We report on integral-, momentum transfer- and differential cross sections for elastic and electronically inelastic electron collisions with furfural (C5H4O2). The calculations were performed with two different theoretical methodologies, the Schwinger multichannel method with pseudopotentials (SMCPP) and the independent atom method with screening corrected additivity rule (IAM-SCAR) that now incorporates a further interference (I) term. The SMCPP with N energetically open electronic states (N(open)) at either the static-exchange (N(open) ch-SE) or the static-exchange-plus-polarisation (N(open) ch-SEP) approximation was employed to calculate the scattering amplitudes at impact energies lying between 5 eV and 50 eV, using a channel coupling scheme that ranges from the 1ch-SEP up to the 63ch-SE level of approximation depending on the energy considered. For elastic scattering, we found very good overall agreement at higher energies among our SMCPP cross sections, our IAM-SCAR+I cross sections and the experimental data for furan (a molecule that differs from furfural only by the substitution of a hydrogen atom in furan with an aldehyde functional group). This is a good indication that our elastic cross sections are converged with respect to the multichannel coupling effect for most of the investigated intermediate energies. However, although the present application represents the most sophisticated calculation performed with the SMCPP method thus far, the inelastic cross sections, even for the low lying energy states, are still not completely converged for intermediate and higher energies. We discuss possible reasons leading to this discrepancy and point out what further steps need to be undertaken in order to improve the agreement between the calculated and measured cross sections.
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Affiliation(s)
- Romarly F da Costa
- Instituto de Física "Gleb Wataghin," Universidade Estadual de Campinas, Campinas, São Paulo 13083-859, Brazil
| | - Márcio T do N Varella
- Instituto de Física, Universidade de São Paulo, CP 66318, São Paulo, São Paulo 05315-970, Brazil
| | - Márcio H F Bettega
- Departamento de Física, Universidade Federal do Paraná, CP 19044, Curitiba, Paraná 81531-990, Brazil
| | - Rafael F C Neves
- Instituto Federal do Sul de Minas Gerais, Campus Poços de Caldas, Minas Gerais, Brazil
| | - Maria Cristina A Lopes
- Departamento de Física, Universidade Federal de Juiz de Fora, Juiz de Fora, MG 36036-900, Brazil
| | - Francisco Blanco
- Departamento de Física Atómica, Molecular y Nuclear, Universidad Complutense de Madrid, Madrid E-28040, Spain
| | - Gustavo García
- Instituto de Física Fundamental, CSIC, Serrano 113-bis, 28006 Madrid, Spain
| | - Darryl B Jones
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia
| | - Michael J Brunger
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia
| | - Marco A P Lima
- Instituto de Física "Gleb Wataghin," Universidade Estadual de Campinas, Campinas, São Paulo 13083-859, Brazil
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17
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Chiari L, Zecca A, Blanco F, García G, Brunger MJ. Experimental and theoretical cross sections for positron scattering from the pentane isomers. J Chem Phys 2016; 144:084301. [PMID: 26931696 DOI: 10.1063/1.4942472] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Isomerism is ubiquitous in chemistry, physics, and biology. In atomic and molecular physics, in particular, isomer effects are well known in electron-impact phenomena; however, very little is known for positron collisions. Here we report on a set of experimental and theoretical cross sections for low-energy positron scattering from the three structural isomers of pentane: normal-pentane, isopentane, and neopentane. Total cross sections for positron scattering from normal-pentane and isopentane were measured at the University of Trento at incident energies between 0.1 and 50 eV. Calculations of the total cross sections, integral cross sections for elastic scattering, positronium formation, and electronic excitations plus direct ionization, as well as elastic differential cross sections were computed for all three isomers between 1 and 1000 eV using the independent atom model with screening corrected additivity rule. No definitive evidence of a significant isomer effect in positron scattering from the pentane isomers appears to be present.
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Affiliation(s)
- L Chiari
- Department of Physics, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan
| | - A Zecca
- Department of Physics, University of Trento, Via Sommarive 14, Povo, Trento 38123, Italy
| | - F Blanco
- Departamento de Física Atomica, Molecular y Nuclear, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - G García
- Instituto de Física Fundamental, Consejo Superior de Investigationes Científicas (CSIC), Serrano 113-bis, 28006 Madrid, Spain
| | - M J Brunger
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia
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18
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Jones DB, Neves RFC, Lopes MCA, da Costa RF, Varella MTDN, Bettega MHF, Lima MAP, García G, Blanco F, Brunger MJ. Excitation of vibrational quanta in furfural by intermediate-energy electrons. J Chem Phys 2015; 143:224304. [PMID: 26671372 DOI: 10.1063/1.4936631] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We report cross sections for electron-impact excitation of vibrational quanta in furfural, at intermediate incident electron energies (20, 30, and 40 eV). The present differential cross sections are measured over the scattered electron angular range 10°-90°, with corresponding integral cross sections subsequently being determined. Furfural is a viable plant-derived alternative to petrochemicals, being produced via low-temperature plasma treatment of biomass. Current yields, however, need to be significantly improved, possibly through modelling, with the present cross sections being an important component of such simulations. To the best of our knowledge, there are no other cross sections for vibrational excitation of furfural available in the literature, so the present data are valuable for this important molecule.
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Affiliation(s)
- D B Jones
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia
| | - R F C Neves
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia
| | - M C A Lopes
- Departamento de Física, Universidade Federal de Juiz de Fora, 36036-900, Juiz de Fora, MG, Brazil
| | - R F da Costa
- Instituto de Física "Gleb Wataghin," Universidade Estadual de Campinas, Campinas, 13083-859 São Paulo, Brazil
| | - M T do N Varella
- Instituto de Física, Universidade de São Paulo, CP 66318, 05315-970 São Paulo, São Paulo, Brazil
| | - M H F Bettega
- Departamento de Física, Universidade Federal do Paraná, CP 19044, 81531-990 Curitiba, Paraná, Brazil
| | - M A P Lima
- Instituto de Física "Gleb Wataghin," Universidade Estadual de Campinas, Campinas, 13083-859 São Paulo, Brazil
| | - G García
- Instituto de Física Fundamental, CSIC, Serrano 113-bis, 28006 Madrid, Spain
| | - F Blanco
- Departamento de Física Atómica, Molecular y Nuclear, Universidad Complutense de Madrid, Madrid E-28040, Spain
| | - M J Brunger
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia
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19
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Neves RFC, Jones DB, Lopes MCA, Blanco F, García G, Ratnavelu K, Brunger MJ. Integral cross sections for electron impact excitation of vibrational and electronic states in phenol. J Chem Phys 2015; 142:194305. [PMID: 26001459 DOI: 10.1063/1.4921313] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We report on measurements of integral cross sections (ICSs) for electron impact excitation of a series of composite vibrational modes and electronic-states in phenol, where the energy range of those experiments was 15-250 eV. There are currently no other results against which we can directly compare those measured data. We also report results from our independent atom model with screened additivity rule correction computations, namely, for the inelastic ICS (all discrete electronic states and neutral dissociation) and the total ionisation ICS. In addition, for the relevant dipole-allowed excited electronic states, we also report f-scaled Born-level and energy-corrected and f-scaled Born-level (BEf-scaled) ICS. Where possible, our measured and calculated ICSs are compared against one another with the general level of accord between them being satisfactory to within the measurement uncertainties.
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Affiliation(s)
- R F C Neves
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide SA 5001, Australia
| | - D B Jones
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide SA 5001, Australia
| | - M C A Lopes
- Departamento de Física, Universidade Federal de Juiz de Fora, 36036-330 Juiz de Fora, Minas Gerais, Brazil
| | - F Blanco
- Departamento de Física Atómica, Molecular y Nuclear, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - G García
- Instituto de Física Fundamental, CSIC, Serrano 113-bis, 28006 Madrid, Spain
| | - K Ratnavelu
- Institute of Mathematical Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - M J Brunger
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide SA 5001, Australia
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20
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da Costa RF, de Oliveira EM, Bettega MHF, Varella MTDN, Jones DB, Brunger MJ, Blanco F, Colmenares R, Limão-Vieira P, García G, Lima MAP. Electron collisions with phenol: Total, integral, differential, and momentum transfer cross sections and the role of multichannel coupling effects on the elastic channel. J Chem Phys 2015; 142:104304. [DOI: 10.1063/1.4913824] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Affiliation(s)
- Romarly F. da Costa
- Instituto de Física “Gleb Wataghin,” Universidade Estadual de Campinas, 13083-859 Campinas, São Paulo, Brazil
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, 09210-580 Santo André, São Paulo, Brazil
| | - Eliane M. de Oliveira
- Instituto de Física “Gleb Wataghin,” Universidade Estadual de Campinas, 13083-859 Campinas, São Paulo, Brazil
| | - Márcio H. F. Bettega
- Departamento de Física, Universidade Federal do Paraná, CP 19044, 81531-990 Curitiba, Paraná, Brazil
| | - Márcio T. do N. Varella
- Instituto de Física, Universidade de São Paulo, CP 66318, 05315-970 São Paulo, São Paulo, Brazil
| | - Darryl B. Jones
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide SA 5001, Australia
| | - Michael J. Brunger
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide SA 5001, Australia
- Institute of Mathematical Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Francisco Blanco
- Departamento de Fisica Atomica, Molecular y Nuclear, Universidad Complutense de Madrid, Ciudad Universitaria, 2840 Madrid, Spain
| | | | - Paulo Limão-Vieira
- Laboratório de Colisões Atómicas e Moleculares, CEFITEC, Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Gustavo García
- Instituto de Fisica Fundamental, CSIC, Serrano 113-bis, 28006 Madrid, Spain
| | - Marco A. P. Lima
- Instituto de Física “Gleb Wataghin,” Universidade Estadual de Campinas, 13083-859 Campinas, São Paulo, Brazil
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21
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Barbosa AS, Bettega MHF. Collisions of low-energy electrons with cyclohexane. J Chem Phys 2014; 141:244307. [PMID: 25554151 DOI: 10.1063/1.4904704] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
We report calculated cross sections for elastic scattering of low-energy electrons by cyclohexane (c-C6H12). We employed the Schwinger multichannel method implemented with norm-conserving pseudopotentials in the static-exchange and static-exchange plus polarization approximations, for impact energies up to 30 eV. We compare our calculated integral cross section with experimental total cross sections available in the literature. We also compare our calculated differential cross sections (DCSs) with experimental results for benzene and experimental and theoretical results for 1,4-dioxane, in order to investigate the similarities between those molecules under electron collisions. Although benzene is a cyclic six-carbon molecule, as cyclohexane, we found that the differential cross sections of the latter are more similar to those of 1,4-dioxane than those of benzene. These similarities suggest that the geometry may play an important role in the behavior of the DCSs of these molecules. Our integral cross section displays a broad structure at around 8.5 eV, in agreement with the total cross section experimental data of 8 eV and vibrational excitation data of 7.5 eV. The present integral cross section also shows the presence of a Ramsauer-Townsend minimum at around 0.12 eV. In general, our integral cross section shows a qualitative agreement with the experimental total cross section.
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Affiliation(s)
- Alessandra Souza Barbosa
- Departamento de Física, Universidade Federal do Paraná, Caixa Postal 19044, 81531-990 Curitiba, Paraná, Brazil
| | - Márcio H F Bettega
- Departamento de Física, Universidade Federal do Paraná, Caixa Postal 19044, 81531-990 Curitiba, Paraná, Brazil
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22
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Chiari L, Duque HV, Jones DB, Thorn PA, Pettifer Z, da Silva GB, Limão-Vieira P, Duflot D, Hubin-Franskin MJ, Delwiche J, Blanco F, García G, Lopes MCA, Ratnavelu K, White RD, Brunger MJ. Differential cross sections for intermediate-energy electron scattering from α-tetrahydrofurfuryl alcohol: excitation of electronic-states. J Chem Phys 2014; 141:024301. [PMID: 25028013 DOI: 10.1063/1.4885856] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We report on measurements of differential cross sections (DCSs) for electron impact excitation of a series of Rydberg electronic-states in α-tetrahydrofurfuryl alcohol (THFA). The energy range of these experiments was 20-50 eV, while the scattered electron was detected in the 10°-90° angular range. There are currently no other experimental data or theoretical computations against which we can directly compare the present measured results. Nonetheless, we are able to compare our THFA DCSs with earlier cross section measurements for Rydberg-state electronic excitation for tetrahydrofuran, a similar cyclic ether, from Do et al. [J. Chem. Phys. 134, 144302 (2011)]. In addition, "rotationally averaged" elastic DCSs, calculated using our independent atom model with screened additivity rule correction approach are also reported. Those latter results give integral cross sections consistent with the optical theorem, and supercede those from the only previous study of Milosavljević et al. [Eur. Phys. J. D 40, 107 (2006)].
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Affiliation(s)
- L Chiari
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia
| | - H V Duque
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia
| | - D B Jones
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia
| | - P A Thorn
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia
| | - Z Pettifer
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia
| | - G B da Silva
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia
| | - P Limão-Vieira
- Laboratório de Colisões Atómicas e Moleculares, CEFITEC, Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - D Duflot
- Laboratoire de Physique des Lasers, Atomes et Molécules, UMR CNRS 8523, Université Lille, F-59655 Villeneuve d'Ascq Cedex, France
| | - M-J Hubin-Franskin
- Départment de Chimie, Université de Liège, Institut de Chimie-Bât. B6C, B-4000 Liège 1, Belgium
| | - J Delwiche
- Départment de Chimie, Université de Liège, Institut de Chimie-Bât. B6C, B-4000 Liège 1, Belgium
| | - F Blanco
- Departamento de Física Atómica, Molecular y Nuclear, Universidad Complutense de Madrid, Madrid E-28040, Spain
| | - G García
- Instituto de Física Fundamental, CSIC, Madrid E-28006, Spain
| | - M C A Lopes
- Departamento de Física, Universidade Federal de Juiz de Fora, Juiz de Fora, MG, Brazil
| | - K Ratnavelu
- Institute of Mathematical Sciences, University of Malaya, Kuala Lumpur, Malaysia
| | - R D White
- School of Engineering and Physical Sciences, James Cook University, Townsville, 4810 Queensland, Australia
| | - M J Brunger
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia
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23
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Sieradzka A, Blanco F, Fuss MC, Mašín Z, Gorfinkiel JD, García G. Electron Scattering from Pyridine. J Phys Chem A 2014; 118:6657-63. [DOI: 10.1021/jp503665a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A. Sieradzka
- Department
of Physical Sciences, The Open University, Walton Hall, Milton Keynes, MK7 6AA, United Kingdom
| | - F. Blanco
- Departamento
de Física Atómica, Molecular y Nuclear, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - M. C. Fuss
- Instituto de Física Fundamental, Consejo Superior de Investigaciones Científicas, Serrano
113-bis, 28006 Madrid, Spain
| | - Z. Mašín
- Department
of Physical Sciences, The Open University, Walton Hall, Milton Keynes, MK7 6AA, United Kingdom
| | - J. D. Gorfinkiel
- Department
of Physical Sciences, The Open University, Walton Hall, Milton Keynes, MK7 6AA, United Kingdom
| | - G. García
- Instituto de Física Fundamental, Consejo Superior de Investigaciones Científicas, Serrano
113-bis, 28006 Madrid, Spain
- Centre
for Medical Radiation Physics, University of Wollongong, Wollongong 2522, New South Wales, Australia
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