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Beutner V, Zhang SG, Meyer H, Kłos J. The near-IR spectrum of NO(X̃ 2Π)-He detected through excitation into the Ã-state continuum: A joint experimental and theoretical study. J Chem Phys 2016; 145:124318. [PMID: 27782644 DOI: 10.1063/1.4963228] [Citation(s) in RCA: 8] [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 present the first measurement of a bound-state spectrum of the NO-He complex. The recorded spectrum is associated with the first overtone transition of the NO moiety. The IR absorption is detected by exciting the vibrationally excited complex to the Ã-state dissociation continuum. The resulting NO(A) fragment is subsequently ionized in the same laser pulse. We recorded two bands centered around the NO monomer rotational lines, Q11(0.5) and R11(0.5), consistent with an almost free rotation of the NO fragment within the complex. The origin of the spectrum is found at 3724.06 cm-1 blue shifted by 0.21 cm-1 from the corresponding NO monomer origin. The rotational structures of the spectrum are found to be in very good agreement with calculated spectra based on bound states derived from a set of high level ab initio potential energy surfaces [Kłos et al. J. Chem. Phys. 112, 2195 (2000)].
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Affiliation(s)
- V Beutner
- Department of Physics and Astronomy, The University of Georgia, Athens, Georgia 30602-2451, USA
| | - S G Zhang
- Department of Physics and Astronomy, The University of Georgia, Athens, Georgia 30602-2451, USA
| | - H Meyer
- Department of Physics and Astronomy, The University of Georgia, Athens, Georgia 30602-2451, USA
| | - J Kłos
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742-2021, USA
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Kłos J, Zhang SG, Meyer H. The near-IR spectrum of NO(X̃(2)Π)-Ne detected through excitation into the Ã-state continuum: A joint experimental and theoretical study. J Chem Phys 2016; 144:114307. [PMID: 27004876 DOI: 10.1063/1.4943797] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We present new measurements of the near IR spectrum of NO-Ne in the region of the first NO overtone transition. The IR absorption is detected by exciting the vibrationally excited complex to the Ã-state dissociation continuum. The resulting NO(A) fragment is subsequently ionized in the same laser pulse. Spectra of the two lowest bands, A and B, are recorded. The spectra are compared with calculated spectra based on bound states derived from a new set of high level ab initio potential energy surfaces (PESs). For the calculation, the PESs are used with either fixed NO intermolecular distance or averaged for the vibrational states of NO (X̃, v = 0 or 2). Spectra based on the new PESs reproduce the experimental spectra better than theoretical spectra based on the older PESs of M. H. Alexander et al. [J. Chem. Phys. 114, 5588 (2001)]. Especially, spectra based on the two different vibrationally averaged PESs show a marked improvement in comparison to the one based on the fixed internuclear NO-distance. A fitted set of spectroscopic constants allows to reproduce most of the finer details of the measured spectra. Monitoring simultaneously the NO fragment ion and the parent ion channels while scanning the UV wavelength through the NO A-X hot-band region enabled us to confirm the NO-Ne Ã-state dissociation limit of 44233 ± 5 cm(-1). These measurements also confirm the absence of a structured NO-Ne spectrum involving the Ã-state.
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Affiliation(s)
- J Kłos
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742-2021, USA
| | - S G Zhang
- Department of Physics and Astronomy, The University of Georgia, Athens, Georgia 30602-2451, USA
| | - H Meyer
- Department of Physics and Astronomy, The University of Georgia, Athens, Georgia 30602-2451, USA
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Loreau J, van der Avoird A. Scattering of NH3 and ND3 with rare gas atoms at low collision energy. J Chem Phys 2015; 143:184303. [DOI: 10.1063/1.4935259] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- J. Loreau
- Service de Chimie Quantique et Photophysique, Université Libre de Bruxelles (ULB) CP 160/09, 50 av. F.D. Roosevelt, 1050 Brussels, Belgium
| | - A. van der Avoird
- Theoretical Chemistry, Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
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Tkáč O, Saha AK, Loreau J, Ma Q, Dagdigian PJ, Parker DH, van der Avoird A, Orr-Ewing AJ. Rotationally inelastic scattering of ND3with H2as a probe of the intermolecular potential energy surface. Mol Phys 2015. [DOI: 10.1080/00268976.2015.1059958] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Tkáč O, Saha AK, Loreau J, Parker DH, van der Avoird A, Orr-Ewing AJ. Rotationally Inelastic Scattering of Quantum-State-Selected ND3 with Ar. J Phys Chem A 2015; 119:5979-87. [PMID: 25532415 DOI: 10.1021/jp5115042] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Rotationally inelastic scattering of ND3 with Ar is studied at mean collision energies of 410 and 310 cm(–1). In the experimental component of the study, ND3 molecules are prepared by supersonic expansion and subsequent hexapole state selection in the ground electronic and vibrational levels and in the jk(±) = 1(1) rotational level. A beam of state-selected ND3 molecules is crossed with a beam of Ar, and scattered ND3 molecules are detected in single final j′k′(±) quantum states using resonance enhanced multiphoton ionization spectroscopy. State-to-state differential cross sections for rotational-level changing collisions are obtained by velocity map imaging. The experimental measurements are compared with close-coupling quantum-mechanical scattering calculations performed using an ab initio potential energy surface. The computed DCSs agree well with the experimental measurements, confirming the high quality of the potential energy surface. The angular distributions are dominated by forward scattering for all measured final rotational and vibrational inversion symmetry states. This outcome is in contrast to our recent results for inelastic scattering of ND3 with He, where we observed significant amount of sideways and backward scattering for some final rotational levels of ND3. The differences between He and Ar collision partners are explained by differences in the potential energy surfaces that govern the scattering dynamics.
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Affiliation(s)
- Ondřej Tkáč
- †Laboratorium für Physikalische Chemie, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Ashim K Saha
- ‡Institute for Molecules and Materials, Radboud University Nijmegen, Toernooiveld 1, 6525ED Nijmegen, The Netherlands
| | - Jérôme Loreau
- §Service de Chimie Quantique et Photophysique, Université Libre de Bruxelles (ULB) CP 160/09, 50 Av. F. D. Roosevelt, 1050 Brussels, Belgium
| | - David H Parker
- ‡Institute for Molecules and Materials, Radboud University Nijmegen, Toernooiveld 1, 6525ED Nijmegen, The Netherlands
| | - Ad van der Avoird
- ‡Institute for Molecules and Materials, Radboud University Nijmegen, Toernooiveld 1, 6525ED Nijmegen, The Netherlands
| | - Andrew J Orr-Ewing
- ∥School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, U.K
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Tkáč O, Ma Q, Stei M, Orr-Ewing AJ, Dagdigian PJ. Rotationally inelastic scattering of methyl radicals with Ar and N2. J Chem Phys 2015; 142:014306. [PMID: 25573560 DOI: 10.1063/1.4904901] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The rotationally inelastic scattering of methyl radical with Ar and N2 is examined at collision energies of 330 ± 25 cm(-1) and 425 ± 50 cm(-1), respectively. Differential cross sections (DCSs) were measured for different final n' rotational levels (up to n' = 5) of the methyl radicals, averaged over k' sub-levels, using a crossed molecular beam machine with velocity map imaging. For Ar as a collision partner, we present a newly constructed ab initio potential energy surface and quantum mechanical scattering calculations of state-resolved DCSs. These computed DCSs agree well with the measurements. The DCSs for both Ar and N2 collision partners are strongly forward peaked for all spectroscopic lines measured. For scattering angles below 60°, the theoretical CD3-Ar DCSs show diffraction oscillations that become less pronounced as n' increases, but these oscillations are not resolved experimentally. Comparisons are drawn with our recently reported DCSs for scattering of methyl radicals with He atoms.
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Affiliation(s)
- Ondřej Tkáč
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Qianli Ma
- Department of Chemistry, The Johns Hopkins University, Baltimore, Maryland 21218-2685, USA
| | - Martin Stei
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
| | - Andrew J Orr-Ewing
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Paul J Dagdigian
- Department of Chemistry, The Johns Hopkins University, Baltimore, Maryland 21218-2685, USA
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Meyer H, Kłos J, Alexander MH. Near-IR spectrum of NO(X2Π)-Xe: a joint experimental-theoretical investigation. J Phys Chem A 2013; 117:11906-14. [PMID: 23731187 DOI: 10.1021/jp4031267] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Employing the method of constant photon energy sum (CONPHOENERS) scans, we measure the near-IR spectrum of NO-Xe in the region of the first vibrational overtone of the NO monomer. Three bands are detected, which are assigned as the origin band located at 3722.60 cm(-1) and as bands with excitation of one quantum of z-axis rotation (3726.07 cm(-1)) and one quantum of bending vibration (3739.02 cm(-1)), respectively. The partially resolved rotational and electronic fine structures of the bands are analyzed with the help of a full quantum mechanical bound-state calculation using the ab initio potential energy surfaces of Kłos et al. (J. Chem. Phys. 2012, 137, 014312/1-014312/14). We perform a linear least-squares fit to the calculated energy levels to determine a set of spectroscopic constants that describe not only the overall rotation of the complex but also the electrostatic splitting due to the sum potential and the P-type doubling due to the difference potential. Using these results as guidance, we are able to simulate the experimental spectra. The comparison with the results from the theoretical treatment confirms the high quality of the ab initio treatment. The position of the excited bands is predicted with sub-wavenumber accuracy. Also, the rotational constants for all bands are found within less than 5%. Some differences are found for the amount of P-type doubling, which is overestimated by the theoretical treatment. Constants for the electrostatic splitting are in reasonable agreement for the origin band. Larger deviations are found for the vibrationally excited band, which points toward some inaccuracies in the potential energy surfaces.
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Affiliation(s)
- H Meyer
- Department of Physics and Astronomy, The University of Georgia , Athens, Georgia 30602-2451, United States
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Meyer H. The Ã-state dissociation continuum of NO-Ar and its near infrared spectrum. J Chem Phys 2012; 136:204308. [PMID: 22667561 DOI: 10.1063/1.4722885] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
After preparing NO-Ar in a vibrational state correlating with the first overtone vibration in NO, we recorded its hot band UV spectrum by monitoring simultaneously the intensity in the NO(+) and the NO(+)-Ar ion channels. In this way, the bound as well as the continuous part of the electronic Ã←X̃ spectrum are observed directly. Below the dissociation threshold, the intensity is found exclusively in the NO(+)-Ar ion channel while above it is found in the NO fragment ion channel. We observe simultaneously intensity in both ion channels only for a very narrow frequency range near the dissociation threshold. Structures in the dissociation spectrum correlate well with the thresholds for production of NO(A) in different rotational states. At frequencies well above the dissociation threshold, NO-Ar is detected efficiently as a NO fragment. This fact has been exploited to record the near IR spectrum of NO-Ar with significantly increased sensitivity. The dissociation detected spectra are essentially identical to our previous constant photon energy sum (CONPHOENERS) scans [B. Wen, Y. Kim, H. Meyer, J. Kłos, and M. H. Alexander, J. Phys. Chem. A 112, 9483 (2008)]. Several hot band spectra have been remeasured with improved sensitivity enabling a comprehensive analysis yielding for the first time spectroscopic constants for levels associated with the potential surfaces of NO-Ar correlating with NO(v(NO) = 0 and 2). Since many NO-X complexes do not have a strong bound Ã-state spectrum, although they do have a Ã-state dissociation continuum, there is the possibility to record their near IR spectra by employing dissociation detection.
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Affiliation(s)
- H Meyer
- Department of Physics and Astronomy, The University of Georgia, Athens, Georgia 30602-2451, USA
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Pirani F, Roncaratti LF, Belpassi L, Tarantelli F, Cappelletti D. Molecular-beam study of the ammonia–noble gas systems: Characterization of the isotropic interaction and insights into the nature of the intermolecular potential. J Chem Phys 2011; 135:194301. [DOI: 10.1063/1.3660199] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Wen B, Meyer H, Kłos J. The structure of the NO(X (2)Pi)-N(2) complex: A joint experimental-theoretical study. J Chem Phys 2010; 132:154305. [PMID: 20423179 DOI: 10.1063/1.3380666] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We report the first measurement of the spectrum of the NO-N(2) complex in the region of the first vibrational NO overtone transition. The origin band of the complex is blueshifted by 0.30 cm(-1) from the corresponding NO monomer frequency. The observed spectrum consists of three bands assigned to the origin band, the excitation of one quantum of z-axis rotation and one associated hot band. The spacing of the bands and the rotational structure indicate a T-shaped vibrationally averaged structure with the NO molecule forming the top of the T. These findings are confirmed by high level ab initio calculations of the potential energy surfaces in planar symmetry. The deepest minimum is found for a T-shaped geometry on the A(")-surface. As a result the sum potential also has the global minimum for this structure. The different potential surfaces show several additional local minima at slightly higher energies indicating that the complex most likely will perform large amplitude motion even in its ground vibrational state. Nevertheless, as suggested by the measured spectra, the complex must, on average, spend a substantial amount of time near the T-shaped configuration.
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Affiliation(s)
- B Wen
- Department of Physics and Astronomy, The University of Georgia, Athens, Georgia 30602-2451, USA
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11
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Kay JJ, van de Meerakker SYT, Wade EA, Strecker KE, Chandler DW. Differential Cross Sections for Rotational Excitation of ND3 by Ne. J Phys Chem A 2009; 113:14800-6. [DOI: 10.1021/jp904983w] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jeffrey J. Kay
- Sandia National Laboratories, Livermore, California 94550, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany, and Department of Chemistry and Physics, Mills College, Oakland, California
| | - Sebastiaan Y. T. van de Meerakker
- Sandia National Laboratories, Livermore, California 94550, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany, and Department of Chemistry and Physics, Mills College, Oakland, California
| | - Elisabeth A. Wade
- Sandia National Laboratories, Livermore, California 94550, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany, and Department of Chemistry and Physics, Mills College, Oakland, California
| | - Kevin E. Strecker
- Sandia National Laboratories, Livermore, California 94550, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany, and Department of Chemistry and Physics, Mills College, Oakland, California
| | - David W. Chandler
- Sandia National Laboratories, Livermore, California 94550, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany, and Department of Chemistry and Physics, Mills College, Oakland, California
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Abstract
We report the first measurement of the near IR spectrum of the NO-CH(4) complex in the region of the first vibrational NO overtone transition in an IR-resonance enhanced multiphoton ionization double resonance experiment. The origin band is located at 3723.26 cm(-1), i.e., redshifted by 0.59 cm(-1) from the corresponding NO monomer frequency. The observed spectrum consists of two bands assigned to the origin band and the excitation of hindered rotation of the NO monomer in the complex similar to z-axis rotation. The spacing and the relative intensity of the bands are consistent with a structure in which NO resides preferentially in a position perpendicular to the intermolecular axis. The deviation from the linear configuration with C(3v) symmetry can be regarded as a Jahn-Teller (JT) distortion. Each band is dominated by two broad peaks with a few resolved rotational structures. The large spacing between the two peaks is indicative of significant angular momentum quenching, possibly another manifestation of the JT effect. The delay dependence between the IR and UV laser pulses reveals a lifetime of about 10 ns for the vibrationally excited complex due to vibrational predissociation. On the other hand, the linewidth of the narrowest spectral features indicates a much shorter excited state lifetime of about 100 ps, most likely due to intramolecular vibrational redistribution.
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Affiliation(s)
- B Wen
- Department of Physics and Astronomy, The University of Georgia, Athens, Georgia 30602-2451, USA
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Wen B, Meyer H, Kłos J, Alexander MH. Joint experimental-theoretical investigation of the lower bound states of the NO(X2Pi)-Kr complex. J Phys Chem A 2009; 113:7366-75. [PMID: 19388642 DOI: 10.1021/jp811513j] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We describe the first measurement of the near IR spectrum of the NO-Kr van der Waals complex. A variant of IR-REMPI double-resonance spectroscopy is employed in which the IR and UV lasers are scanned simultaneously in such a way that throughout the scan the sum of the two photon energies is kept constant, matching a UV resonance of the system. In the region of the first overtone vibration of the NO monomer, we observe several rotationally resolved bands for the NO-Kr complex. In addition to the origin band located at 3723.046 cm(-1), we observe excited as well as hot bands involving the excitation of one or two quanta of z-axis rotation. Another band is assigned to the excitation of one quantum of bending vibration. The experimental spectra are compared with results of bound-state calculations for a new set of potential energy surfaces calculated at the spin-restricted coupled cluster level. For the average vibration-rotation energies, there is excellent agreement between the theoretical results based on the coupled states (CS) approximation and the full close-coupling (CC) treatment. Finer details like the electrostatic splitting and the P-type doubling of the rotational levels are accounted for only within the CC formalism. The comparison of the CC results with the measured spectra confirms the high quality of the PESs. However, the high resolution of the experiments is sufficient to identify some inaccuracies in the difference between the potential energy surfaces of A' and A'' reflection symmetry.
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Affiliation(s)
- Bo Wen
- Department of Physics and Astronomy, The University of Georgia, Athens, Georgia 30602-2451, USA
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Wen B, Kim Y, Meyer H, Kłos J, Alexander MH. IR-REMPI Double Resonance Spectroscopy: The Near-IR Spectrum of NO−Ar Revisited. J Phys Chem A 2008; 112:9483-93. [DOI: 10.1021/jp802765z] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kim Y, Meyer H, Alexander MH. Molecular beam scattering of NO+Ne: A joint theoretical and experimental study. J Chem Phys 2004; 121:1339-49. [PMID: 15260677 DOI: 10.1063/1.1763149] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The collision dynamics of the NO+Ne system is investigated in a molecular beam scattering experiment at a collision energy of 1055 cm(-1). Employing resonance enhanced multiphoton ionization of NO, we measured state-resolved integral and differential cross sections for the excitation to various levels of both spin-orbit manifolds. The dependence of the scattered intensity on the laser polarization is used to extract differential quadrupole moments for the collision induced angular momentum alignment. The set of cross section data is compared with results of a full quantum mechanical close coupling calculation using the set of ab initio potential energy surfaces of Alexander et al. [J. Chem. Phys. 114, 5588 (2001)]. In previous work, it was found that the positions and rotational substructures for the lowest bend-stretch vibrational states derived from these surfaces agree very well with the observed spectrum of the NO-Ne complex. For the same potential, we find that the calculated cross sections show a less satisfactory agreement with the experimental data. While the overall Jf dependence and magnitude of the integral and differential cross sections are in good agreement, noticeable discrepancies exist for the angle dependence of the differential cross sections. In general, the calculated rotational rainbow structures are shifted towards larger scattering angles indicating that the anisotropy of the potential is overestimated in the fit to the ab initio points or in the ab initio calculation itself. For most states, we find the measured alignment moments to be in excellent agreement with the results of the calculation as well as with predictions of sudden models. Significant deviations from the sudden models are observed only for those fine-structure changing collisions which are dominated by forward scattering. Results of the full quantum calculation confirm the deviations for these states.
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Affiliation(s)
- Y Kim
- Department of Physics and Astronomy, The University of Georgia, Athens, Georgia 30602-2451, USA
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Kim Y, Meyer H. Two-photon spectroscopy of aligned acetaldehyde. Chem Phys Lett 2004. [DOI: 10.1016/j.cplett.2004.02.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Aoiz FJ, Herrero VJ, Sáez Rábanos V, Verdasco JE. Classical stereodynamics in Ar + NO inelastic collisions. Phys Chem Chem Phys 2004. [DOI: 10.1039/b409607j] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kim Y, Fleniken J, Meyer H. The NO(X2Π)–Ne complex. I. IR-REMPI double resonance spectroscopy. J Chem Phys 2001. [DOI: 10.1063/1.1349085] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kim Y, Fleniken J, Meyer H, Alexander MH, Dagdigian PJ. A joint theoretical–experimental investigation of the lower bound states of the NO(X 2Π)–Ar complex. J Chem Phys 2000. [DOI: 10.1063/1.481776] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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23
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Efficient production of vibrationally excited NO using a pulsed molecular beam discharge source. Chem Phys Lett 2000. [DOI: 10.1016/s0009-2614(00)00056-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Kim Y, Patton K, Fleniken J, Meyer H. Rotationally resolved overtone spectroscopy of the NO–Ar complex. Chem Phys Lett 2000. [DOI: 10.1016/s0009-2614(00)00055-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Demyanenko AV, Dribinski V, Reisler H, Meyer H, Qian CXW. Product quantum-state-dependent anisotropies in photoinitiated unimolecular decomposition. J Chem Phys 1999. [DOI: 10.1063/1.480061] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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26
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Harris SA, Wiediger SD, Philip R. Brooks*. Electron Transfer to SF6 and Oriented CH3Br. J Phys Chem A 1999. [DOI: 10.1021/jp9919664] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sean A. Harris
- Chemistry Department and Rice Quantum Institute, Rice University, Houston, Texas 77251
| | - Susan D. Wiediger
- Chemistry Department and Rice Quantum Institute, Rice University, Houston, Texas 77251
| | - Philip R. Brooks*
- Chemistry Department and Rice Quantum Institute, Rice University, Houston, Texas 77251
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27
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Kim Y, Fleniken J, Meyer H. Two-Photon Spectroscopy of the Acetaldehyde−Ar Complex. J Phys Chem A 1999. [DOI: 10.1021/jp9906233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Y. Kim
- Department of Physics and Astronomy, The University of Georgia, Athens, Georgia 30602-2451
| | - J. Fleniken
- Department of Physics and Astronomy, The University of Georgia, Athens, Georgia 30602-2451
| | - H. Meyer
- Department of Physics and Astronomy, The University of Georgia, Athens, Georgia 30602-2451
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28
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Chapman WB, Kulcke A, Blackmon BW, Nesbitt DJ. Rotationally inelastic scattering of jet cooled H2O with Ar: State-to-state cross sections and rotational alignment effects. J Chem Phys 1999. [DOI: 10.1063/1.478762] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Meyer H. Two-photon spectroscopy of the low lying Rydberg states of NO. II. Application to the NO–Ar complex. J Chem Phys 1997. [DOI: 10.1063/1.475088] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Henning Meyer
- Department of Physics and Astronomy, The University of Georgia, Athens, Georgia 30602-2451
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31
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Meyer H. Two-photon spectroscopy of the low lying Rydberg states of NO. I. The 3p and 3d complexes. J Chem Phys 1997. [DOI: 10.1063/1.475087] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Henning Meyer
- Department of Physics and Astronomy, The University of Georgia, Athens, Georgia 30602-2451
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Millan J, Halberstadt N, van der Sanden G, van der Avoird A. Vibrational predissociation of the ND3-Ar Van der Waals complex: Comparison with NH3-Ar. J Chem Phys 1997. [DOI: 10.1063/1.474019] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Chapman WB, Weida MJ, Nesbitt DJ. Scattering dynamics in HF+He, Ne, and Ar: State-to-state cross sections, Dopplerimetry, and alignment measurement via direct infrared laser absorption in crossed supersonic jets. J Chem Phys 1997. [DOI: 10.1063/1.473787] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Chapman WB, Schiffman A, Hutson JM, Nesbitt DJ. Rotationally inelastic scattering in CH4+He, Ne, and Ar: State‐to‐state cross sections via direct infrared laser absorption in crossed supersonic jets. J Chem Phys 1996. [DOI: 10.1063/1.472211] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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Mark S, Gerlich D. Differential cross sections, measured with guided ion beams: applications to N+ + N2 and C2H2+ + C2D4 collisions. Chem Phys 1996. [DOI: 10.1016/0301-0104(96)00159-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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van der Sanden GCM, Wormer PES, van der Avoird A. Differential cross sections for rotational excitation of NH3 by collisions with Ar and He: Close coupling results and comparison with experiment. J Chem Phys 1996. [DOI: 10.1063/1.472177] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Schiffman A, Chapman WB, Nesbitt DJ. State-to-State, Rotational Energy-Transfer Dynamics in Crossed Supersonic Jets: A High-Resolution IR Absorption Method. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp952708j] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Aram Schiffman
- Joint Institute for Laboratory Astrophysics of the National Institute of Standards and Technology and University of Colorado, and Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309
| | - William B. Chapman
- Joint Institute for Laboratory Astrophysics of the National Institute of Standards and Technology and University of Colorado, and Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309
| | - David J. Nesbitt
- Joint Institute for Laboratory Astrophysics of the National Institute of Standards and Technology and University of Colorado, and Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309
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Inelastic scattering of NO(2Π) with atomic and molecular colliders. Rotational and fine-structure excitations. Chem Phys Lett 1995. [DOI: 10.1016/0009-2614(95)00118-n] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Meyer H. Electronic fine structure transitions and rotational energy transfer of NO(X 2Π) in collisions with He: A counterpropagating beam study. J Chem Phys 1995. [DOI: 10.1063/1.468626] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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