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Chauhan D, Limbachiya C. Electron interactions with analogous of DNA/RNA nucleobases: 3-hydroxytetrahydroFuran and α-Tetrahydrofurfuryl alcohol. Radiat Phys Chem Oxf Engl 1993 2023. [DOI: 10.1016/j.radphyschem.2023.110802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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2
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Stokes PW, Foster SP, Casey MJE, Cocks DG, González-Magaña O, de Urquijo J, García G, Brunger MJ, White RD. An improved set of electron-THFA cross sections refined through a neural network-based analysis of swarm data. J Chem Phys 2021; 154:084306. [PMID: 33639749 DOI: 10.1063/5.0043759] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We review experimental and theoretical cross sections for electron transport in α-tetrahydrofurfuryl alcohol (THFA) and, in doing so, propose a plausible complete set. To assess the accuracy and self-consistency of our proposed set, we use the pulsed-Townsend technique to measure drift velocities, longitudinal diffusion coefficients, and effective Townsend first ionization coefficients for electron swarms in admixtures of THFA in argon, across a range of density-reduced electric fields from 1 to 450 Td. These measurements are then compared to simulated values derived from our proposed set using a multi-term solution of Boltzmann's equation. We observe discrepancies between the simulation and experiment, which we attempt to address by employing a neural network model that is trained to solve the inverse swarm problem of unfolding the cross sections underpinning our experimental swarm measurements. What results from our neural network-based analysis is a refined set of electron-THFA cross sections, which we confirm is of higher consistency with our swarm measurements than that which we initially proposed. We also use our database to calculate electron transport coefficients in pure THFA across a range of reduced electric fields from 0.001 to 10 000 Td.
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Affiliation(s)
- P W Stokes
- College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia
| | - S P Foster
- College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia
| | - M J E Casey
- College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia
| | - D G Cocks
- Research School of Physics, Australian National University, Canberra, ACT 0200, Australia
| | - O González-Magaña
- Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, 62251 Cuernavaca, Morelos, Mexico
| | - J de Urquijo
- Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, 62251 Cuernavaca, Morelos, Mexico
| | - G García
- Instituto de Física Fundamental, CSIC, Serrano 113-bis, 28006 Madrid, Spain
| | - M J Brunger
- College of Science and Engineering, Flinders University, Bedford Park, Adelaide SA 5042, Australia
| | - R D White
- College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia
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3
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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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Jones DB, Blanco F, García G, da Costa RF, Kossoski F, Varella MTDN, Bettega MHF, Lima MAP, White RD, Brunger MJ. Elastic scattering and vibrational excitation for electron impact onpara-benzoquinone. J Chem Phys 2017; 147:244304. [DOI: 10.1063/1.5010831] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- D. B. Jones
- College of Science and Engineering, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia
| | - F. Blanco
- Departamento de Física Atómica, Molecular y Nuclear, Universidad Complutense de Madrid, Madrid E-28040, Spain
| | - G. García
- Instituto de Física Fundamental, CSIC, Serano 113-bis, E-28006 Madrid, Spain
| | - R. F. da Costa
- Instituto de Física “Gleb Wataghin,” Universidade Estadual de Campinas, Campinas, São Paulo 13083-859, Brazil
- Centro de Ciências Exatas, Departamento de Física, Universidade Federal do Espírito Santo, 29075-901 Vitória, Espírito Santo, Brazil
| | - F. Kossoski
- Instituto de Física “Gleb Wataghin,” Universidade Estadual de Campinas, Campinas, São Paulo 13083-859, Brazil
| | - M. T. do N. Varella
- Instituto de Física, Universidade de São Paulo, Rua do Matão 1731, São Paulo 05508-090, Brazil
| | - M. H. F. Bettega
- Departamento de Física, Universidade Federal do Paraná, CP 19044, Curitiba, Paraná 81531-990, Brazil
| | - M. A. P. Lima
- Instituto de Física “Gleb Wataghin,” Universidade Estadual de Campinas, Campinas, São Paulo 13083-859, Brazil
| | - R. D. White
- College of Science and Engineering, James Cook University, Townsville, Qld 4811, Australia
| | - M. J. Brunger
- College of Science and Engineering, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia
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Dampc M, Mielewska B, Siggel-King MR, King GC, Zubek M. A study of the photoelectron spectra of α-tetrahydrofurfuryl alcohol over the outer valence energy region (9–25 eV). Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.04.084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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6
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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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7
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Jones DB, Neves RFC, Lopes MCA, da Costa RF, do N Varella MT, Bettega MHF, Lima MAP, García G, Limão-Vieira P, Brunger MJ. Theoretical and experimental differential cross sections for electron impact excitation of the electronic bands of furfural. J Chem Phys 2016; 144:124309. [PMID: 27036450 DOI: 10.1063/1.4944615] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We report results from a joint experimental and theoretical investigation into electron scattering from the important industrial species furfural (C5H4O2). Specifically, differential cross sections (DCSs) have been measured and calculated for the electron-impact excitation of the electronic states of C5H4O2. The measurements were carried out at energies in the range 20-40 eV, and for scattered-electron angles between 10° and 90°. The energy resolution of those experiments was typically ∼80 meV. Corresponding Schwinger multichannel method with pseudo-potential calculations, for energies between 6-50 eV and with and without Born-closure, were also performed for a sub-set of the excited electronic-states that were accessed in the measurements. Those calculations were undertaken at the static exchange plus polarisation-level using a minimum orbital basis for single configuration interaction (MOB-SCI) approach. Agreement between the measured and calculated DCSs was qualitatively quite good, although to obtain quantitative accord, the theory would need to incorporate even more channels into the MOB-SCI. The role of multichannel coupling on the computed electronic-state DCSs is also explored in some detail.
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Affiliation(s)
- D B Jones
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia
| | - R F C Neves
- Instituto Federal do Sul de Minas Gerais, Câmpus Poços de Caldas, Minas Gerais, Brazil
| | - M C A Lopes
- Departamento de Física, UFJF, Juiz de Fora, Minas Gerais 36036-900, Brazil
| | - R F da Costa
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, São Paulo 09210-580, 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, Curitiba, Paraná 81531-990, Brazil
| | - M A P Lima
- Instituto de Física "Gleb Wataghin," Universidade Estadual de Campinas, Campinas, São Paulo 13083-859, Brazil
| | - G García
- Instituto de Física Fundamental, CSIC, Serrano 113-bis, 28006 Madrid, Spain
| | - 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
| | - M J Brunger
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia
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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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9
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Jones DB, Ellis-Gibbings L, García G, Nixon KL, Lopes MCA, Brunger MJ. Intermediate energy cross sections for electron-impact vibrational-excitation of pyrimidine. J Chem Phys 2015; 143:094304. [PMID: 26342367 DOI: 10.1063/1.4929907] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We report differential cross sections (DCSs) and integral cross sections (ICSs) for electron-impact vibrational-excitation of pyrimidine, at incident electron energies in the range 15-50 eV. The scattered electron angular range for the DCS measurements was 15°-90°. The measurements at the DCS-level are the first to be reported for vibrational-excitation in pyrimidine via electron impact, while for the ICS we extend the results from the only previous condensed-phase study [P. L. Levesque, M. Michaud, and L. Sanche, J. Chem. Phys. 122, 094701 (2005)], for electron energies ⩽12 eV, to higher energies. Interestingly, the trend in the magnitude of the lower energy condensed-phase ICSs is much smaller when compared to the corresponding gas phase results. As there is no evidence for the existence of any shape-resonances, in the available pyrimidine total cross sections [Baek et al., Phys. Rev. A 88, 032702 (2013); Fuss et al., ibid. 88, 042702 (2013)], between 10 and 20 eV, this mismatch in absolute magnitude between the condensed-phase and gas-phase ICSs might be indicative for collective-behaviour effects in the condensed-phase results.
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Affiliation(s)
- D B Jones
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia
| | - L Ellis-Gibbings
- Instituto de Física Fundamental, CSIC, Serrano 113-bis, 28006 Madrid, Spain
| | - G García
- Instituto de Física Fundamental, CSIC, Serrano 113-bis, 28006 Madrid, Spain
| | - K L Nixon
- Departamento de Física, Universidade Federal de Juiz de Fora, 36036-330 Juiz de Fora, Minas Gerais, Brazil
| | - M C A Lopes
- Departamento de Física, Universidade Federal de Juiz de Fora, 36036-330 Juiz de Fora, Minas Gerais, Brazil
| | - M J Brunger
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia
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10
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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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11
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Do TPT, Duque HV, Lopes MCA, Konovalov DA, White RD, Brunger MJ, Jones DB. Differential cross sections for electron-impact vibrational-excitation of tetrahydrofuran at intermediate impact energies. J Chem Phys 2015; 142:124306. [PMID: 25833578 DOI: 10.1063/1.4915888] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
We report differential cross sections (DCSs) for electron-impact vibrational-excitation of tetrahydrofuran, at intermediate incident electron energies (15-50 eV) and over the 10°-90° scattered electron angular range. These measurements extend the available DCS data for vibrational excitation for this species, which have previously been obtained at lower incident electron energies (≤20 eV). Where possible, our data are compared to the earlier measurements in the overlapping energy ranges. Here, quite good agreement was generally observed where the measurements overlapped.
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Affiliation(s)
- T P T Do
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia
| | - H V Duque
- 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, 36036-330 Juiz de Fora, Minas Gerais, Brazil
| | - D A Konovalov
- College of Science, Technology and Engineering, James Cook University, Townsville, Australia
| | - R D White
- College of Science, Technology and Engineering, James Cook University, Townsville, Australia
| | - M J Brunger
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia
| | - D B Jones
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia
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12
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Neves RFC, Jones DB, Lopes MCA, Nixon KL, da Silva GB, Duque HV, de Oliveira EM, da Costa RF, Varella MTDN, Bettega MHF, Lima MAP, Ratnavelu K, García G, Brunger MJ. Differential cross sections for electron impact excitation of the electronic bands of phenol. J Chem Phys 2015; 142:104305. [DOI: 10.1063/1.4913825] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- R. F. C. Neves
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide SA 5001, Australia
- Instituto Federal do Sul de Minas Gerais, Campus Poços de Caldas, Minas Gerais, Brazil
- Departamento de Física, UFJF, Juiz de Fora, Minas Gerais, Brazil
| | - 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, UFJF, Juiz de Fora, Minas Gerais, Brazil
| | - K. L. Nixon
- Departamento de Física, UFJF, Juiz de Fora, Minas Gerais, Brazil
| | - G. B. da Silva
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide SA 5001, Australia
- Universidade Federal de Mato Grosso, Barra do Garças, Mato Grosso, Brazil
| | - H. V. Duque
- School of Chemical and Physical Sciences, Flinders University, GPO Box 2100, Adelaide SA 5001, Australia
- Departamento de Física, UFJF, Juiz de Fora, Minas Gerais, Brazil
| | - E. M. de Oliveira
- Instituto de Física “Gleb Wataghin,” Universidade Estadual de Campinas, 13083-859 Campinas, São Paulo, Brazil
| | - R. F. da Costa
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, 09210-580 Santo André, São Paulo, 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, 13083-859 Campinas, São Paulo, Brazil
| | - K. Ratnavelu
- Institute of Mathematical Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - G. García
- Instituto de Física Fundamental, CSIC, Madrid E-28006, Spain
| | - M. 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
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13
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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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