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Salazar MG, Ureña AG, Roberts G. Collisional Probing of the Transition-State Structure of a Bimolecular Reaction. Isr J Chem 2013. [DOI: 10.1002/ijch.199700040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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2
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Abstract
I seem to have started off on the wrong foot in life, but I am extremely fortunate that I soon found my footing in the company of physical chemists. I consider myself to be very lucky to be doing something that constantly brings me in contact with bright minds, stimulating conversations, and exciting experiments. My work has allowed me to learn astounding facts about the molecules and atoms that make up our surroundings and ourselves. For this article, I focus on one aspect of my research, understanding the fundamental principles of the simple reaction between a hydrogen atom and a hydrogen molecule. Although my group and others have been studying this seemingly simple reaction for well over 30 years, it continues to provoke questions about the properties of matter.
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Affiliation(s)
- Richard N. Zare
- Department of Chemistry, Stanford University, Stanford, California 94305-5080
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3
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Jankunas J, Sneha M, Zare RN, Bouakline F, Althorpe SC. Disagreement between theory and experiment grows with increasing rotational excitation of HD(v′, j′) product for the H + D2 reaction. J Chem Phys 2013; 138:094310. [DOI: 10.1063/1.4793557] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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4
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Coppage S, Matei P, Stewart B. Absolute level-resolved reactive and inelastic rate constants in Li+Li2*. J Chem Phys 2008; 128:241103. [PMID: 18601310 DOI: 10.1063/1.2951992] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We have used nuclear parity-changing collisions to obtain absolute level-to-level rate constants for reactive scattering in a triatomic system with identical nuclei. We have determined rate constants for the system (7)Li(2) (*)(A (1)Sigma(u) (+))(v(i)=2,j(i)=19)+(7)Li-->(7)Li+(7)Li(2) (*)(A (1)Sigma(u) (+))(v(f),j(f)), from laser-induced fluorescence spectra of lithium vapor in a heat pipe oven. Parity-preserving collisions yielded measurements of absolute rotationally and vibrationally inelastic rate constants as well. We compare the reactive rate constants with statistical prior distributions and the inelastic results with previously measured results on the Ne+(7)Li(2) (*) system.
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Affiliation(s)
- Steven Coppage
- Department of Physics, Wesleyan University, Middletown, Connecticut 06459, USA
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Teslja A, Valentini JJ. State-to-state reaction dynamics: A selective review. J Chem Phys 2006; 125:132304. [PMID: 17029423 DOI: 10.1063/1.2354466] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A selective review of state-to-state reaction dynamics experiments is presented. The review focuses on three classes of reactions that exemplify the rich history and illustrate the current state of the art in such work. These three reactions are (1) the hydrogen exchange reaction, H+H2-->H2+H and its isotopomers; (2) the H+RH-->H2+R reactions, where RH is an alkane, beginning with H+CH4-->H2+CH3 and extending to much larger alkanes; and (3) the Cl+RH-->HCl+R reactions, principally Cl+CH4-->HCl+CH3. We describe the experiments, discuss their results, present comparisons with theory, and introduce heuristic models.
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Affiliation(s)
- Alexey Teslja
- Department of Chemistry, Columbia University, New York, New York 10027, USA
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6
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Chu T, Zhang X, Ju L, Yao L, Han KL, Wang M, Zhang JZ. First principles quantum dynamics study reveals subtle resonance in polyatomic reaction: The case of F+CH4→HF+CH3. Chem Phys Lett 2006. [DOI: 10.1016/j.cplett.2006.03.101] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Whitney ES, Zolot AM, McCoy AB, Francisco JS, Nesbitt DJ. Reactive scattering dynamics in atom+polyatomic systems: F+C2H6-->HF(v,J)+C2H5. J Chem Phys 2006; 122:124310. [PMID: 15836381 DOI: 10.1063/1.1868553] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
State-to-state scattering dynamics of F+C2H6-->HF(v,J)+C2H5 have been investigated at Ecom=3.2(6) kcalmol under single-collision conditions, via detection of nascent rovibrationally resolved HF(v,J) product states with high-resolution infrared laser absorption methods. State-resolved Doppler absorption profiles are recorded for multiple HF(v,J) transitions originating in the v=0,1,2,3 manifold, analyzed to yield absolute column-integrated densities via known HF transition moments, and converted into nascent probabilities via density-to-flux analysis. The spectral resolution of the probe laser also permits Doppler study of translational energy release into quantum-state-resolved HF fragments, which reveals a remarkable linear correlation between (i) HF(v,J) translational recoil and (ii) the remaining energy available, Eavail=Etot-E(HF(v,J)). The dynamics are interpreted in the context of a simple impulsive model based on conservation of linearangular momentum that yields predictions in good agreement with experiment. Deviations from the model indicate only minor excitation of ethyl vibrations, in contrast with a picture of extensive intramolecular vibrational energy flow but consistent with Franck-Condon excitation of the methylene CH2 bending mode. The results suggest a relatively simple dynamical picture for exothermic atom+polyatomic scattering, i.e., that of early barrier dynamics in atom+diatom systems but modified by impulsive recoil coupling at the transition state between translationalrotational degrees of freedom.
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Affiliation(s)
- Erin S Whitney
- JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309-0440, USA
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Aoiz * FJ, BaÑares L, Herrero VJ. The H+H2reactive system. Progress in the study of the dynamics of the simplest reaction. INT REV PHYS CHEM 2005. [DOI: 10.1080/01442350500195659] [Citation(s) in RCA: 92] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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9
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Aquilanti V, Cavalli S, Simoni A, Aguilar A, Lucas JM, De Fazio D. Lifetime of reactive scattering resonances: Q-matrix analysis and angular momentum dependence for the F+H2 reaction by the hyperquantization algorithm. J Chem Phys 2004; 121:11675-90. [PMID: 15634134 DOI: 10.1063/1.1814096] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We report a study on the behavior with total angular momentum J of several resonances occurring at collision energies below or slightly above the reaction barrier in the F+H2-->HF+H reaction. Resonance positions and widths are extracted from exact time-independent quantum mechanical calculations using the hyperquantization algorithm and Smith's Q-matrix formalism which exploits complete S-matrix information. The results confirm previous work but provide much greater insight. Identification of quasi-bound states responsible for the resonances based on adiabatic models for the long-range atom-molecule interactions both in the entrance and exit channels, is successful except for the feature occurring at the lowest energy, which is found to overlap with an exit-channel resonance for J approximately 7. The two features are analyzed as overlapping resonances and their excellent Lorentzian fits, with well-behaved J-dependences of positions and widths, support the interpretation of the low-energy feature as a resonance to be associated to the triatomic transition state of the reaction. Resonance role on the reactive observables (integral cross sections and angular distributions) is investigated. The mechanism leading to forward scattering in the reactive differential cross section is commented, while the effects on rate constants, as well as the sensitivity of the resonance pattern to modification of the potential energy surface, are fully discussed elsewhere.
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Cabrera-Trujillo R, Öhrn Y, Deumens E, Sabin JR. Application of the END Theory to the H + D2 → HD + D Reaction. J Phys Chem A 2004. [DOI: 10.1021/jp0488517] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- R. Cabrera-Trujillo
- Quantum Theory Project, Departments of Physics and Chemistry, University of Florida, Gainesville, Florida 32611-8435
| | - Y. Öhrn
- Quantum Theory Project, Departments of Physics and Chemistry, University of Florida, Gainesville, Florida 32611-8435
| | - E. Deumens
- Quantum Theory Project, Departments of Physics and Chemistry, University of Florida, Gainesville, Florida 32611-8435
| | - J. R. Sabin
- Quantum Theory Project, Departments of Physics and Chemistry, University of Florida, Gainesville, Florida 32611-8435
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11
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Pomerantz AE, Ausfelder F, Zare RN, Althorpe SC, Aoiz FJ, Banares L, Castillo JF. Disagreement between theory and experiment in the simplest chemical reaction: Collision energy dependent rotational distributions for H+D2→HD(ν′=3,j′)+D. J Chem Phys 2004; 120:3244-54. [PMID: 15268478 DOI: 10.1063/1.1641008] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We present experimental rotational distributions for the reaction H + D2 --> HD(nu' = 3,j') + D at eight different collision energies between 1.49 and 1.85 eV. We combine a previous measurement of the state-resolved excitation function for this reaction [Ayers et al., J. Chem. Phys. 119, 4662 (2003)] with the current data to produce a map of the relative reactive cross section as a function of both collision energy and rotational quantum number (an E-j' plot). To compare with the experimental data, we also present E-j' plots resulting from both time-dependent and time-independent quantum mechanical calculations carried out on the BKMP2 surface. The two calculations agree well with each other, but they produce rotational distributions significantly colder than the experiment, with the difference being more pronounced at higher collision energies. Disagreement between theory and experiment might be regarded as surprising considering the simplicity of this system; potential causes of this discrepancy are discussed.
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Affiliation(s)
- Andrew E Pomerantz
- Department of Chemistry, Stanford University, Stanford, California 94305-5080 USA
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12
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Ausfelder F, Pomerantz AE, Zare RN, Althorpe SC, Aoiz FJ, Banares L, Castillo JF. Collision energy dependence of the HD(ν′=2) product rotational distribution of the H+D2 reaction in the range 1.30–1.89 eV. J Chem Phys 2004; 120:3255-64. [PMID: 15268479 DOI: 10.1063/1.1641009] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
An experimental and theoretical investigation of the collision energy dependence of the HD(nu' = 2,j') rotational product state distribution for the H + D2 reaction in the collision energy range of Ecol = 1.30-1.89 eV has been carried out. Theoretical results based on time-dependent and time-independent quantum mechanical methods agree nearly perfectly with each other, and the agreement with the experiment is good at low collision energies and very good at high collision energies. This behavior is in marked contrast to a previous report on the HD(nu' = 3,j') product state rotational distribution [Pomerantz et al., J. Chem. Phys. 120, 3244 (2004)] where a systematic difference between experiment and theory was observed, especially at the highest collision energies. The reason for this different behavior is not yet understood. In addition, this study employs Doppler-free spectroscopy to resolve an ambiguity in the E, F-X resonantly enhanced multiphoton ionization transition originating from the HD(nu' = 2,j' = 1) state, which is found to be caused by an accidental blending with the transition coming from the HD(nu' = 1,j' = 14) state.
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Affiliation(s)
- Florian Ausfelder
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, USA
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Abstract
This review discusses recent quantum scattering calculations on bimolecular chemical reactions in the gas phase. This theory provides detailed and accurate predictions on the dynamics and kinetics of reactions containing three atoms. In addition, the method can now be applied to reactions involving polyatomic molecules. Results obtained with both time-independent and time-dependent quantum dynamical methods are described. The review emphasises the recent development in time-dependent wave packet theories and the applications of reduced dimensionality approaches for treating polyatomic reactions. Calculations on over 40 different reactions are described.
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Abstract
Recent studies of state-resolved angular distributions show the participation of reactive scattering resonances in the simplest chemical reaction. This review is intended for those who wish to learn about the state-of-the-art in the study of the H + H2 reaction family that has made this breakthrough possible. This review is also intended for those who wish to gain insight into the nature of reactive scattering resonances. Following a tour across several fields of physics and chemistry where the concept of resonance has been crucial for the understanding of new phenomena, we offer an operational definition and taxonomy of reactive scattering resonances. We introduce simple intuitive models to illustrate each resonance type. We focus next on the last decade of H + H2 reaction dynamics. Emphasis is placed on the various experimental approaches that have been applied to the search for resonance behavior in the H + H2 reaction family. We conclude by sketching the road ahead in the study of H + H2 reactive scattering resonances.
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Affiliation(s)
- Félix Fernández-Alonso
- Istituto di Struttura della Materia-Consiglio Nazionale delle Ricerche, Area della Ricerca di Roma-Tor Vergata, 00133 Rome, Italy.
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15
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Cureton-Chinn S, Kelly PB, Augustine MP. Magnetic sublevel specific stimulated Raman pumping of molecular H[sub 2]. J Chem Phys 2002. [DOI: 10.1063/1.1451056] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Fernández-Alonso F, Bean B, Ayers J, Pomerantz A, Zare R, Bañares L, Aoiz F. Hinweise für Streuresonanzen in der Reaktion H+D2. Angew Chem Int Ed Engl 2000. [DOI: 10.1002/1521-3757(20000804)112:15<2860::aid-ange2860>3.0.co;2-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Lara M, Aguado A, Paniagua M, Roncero O. State-to-state reaction probabilities using bond coordinates: Application to the Li+HF(v, j) collision. J Chem Phys 2000. [DOI: 10.1063/1.481982] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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18
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Kendrick BK, Jayasinghe L, Moser S, Auzinsh M, Shafer-Ray N. Observation of predicted resonance structure in the H+D2 --> HD(v(') = 0, j(') = 7) + D reaction at a collision energy of 0.94 eV. PHYSICAL REVIEW LETTERS 2000; 84:4325-4328. [PMID: 10990677 DOI: 10.1103/physrevlett.84.4325] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2000] [Indexed: 05/23/2023]
Abstract
We present experimental verification of predicted resonance structure in the energy dependence of the H+D2 reaction. Specifically we predict and observe a broad resonance in the H+D2-->HD(v(') = 0,j(') = 7)+D reaction at a collision energy of 0. 94 eV. This resonance structure is roughly Gaussian with a full width at half maximum of 0.1 eV. These results represent the first experimentally observed resonance structure in the fundamental H+H2 reaction system.
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Affiliation(s)
- BK Kendrick
- Theoretical Division (T-12, MS-B268), Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
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CURETON SARAHM, VYAS SHASHI, KELLY PETERB, AUGUSTINE MATTHEWP. Measurement of the Raman polarizability anisotropy for thev= 1 pure rotational Raman transition inH2by rotational Raman spectroscopy. Mol Phys 2000. [DOI: 10.1080/00268970009483299] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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20
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Skodje RT, Skouteris D, Manolopoulos DE, Lee SH, Dong F, Liu K. Observation of a transition state resonance in the integral cross section of the F+HD reaction. J Chem Phys 2000. [DOI: 10.1063/1.481041] [Citation(s) in RCA: 175] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Fernández-Alonso F, Bean B, Ayers J, Pomerantz A, Zare R. New Scheme for Measuring the Angular Momentum Spatial Anisotropy of Vibrationally Excited H2 via the I 1Πg State. Z PHYS CHEM 2000. [DOI: 10.1524/zpch.2000.214.9.1167] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
We report the spectroscopic detection of vibrationally excited molecular hydrogen using 2+1 resonantly enhanced multiphoton ionization (REMPI) via the I
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Fernández-Alonso F, Bean BD, Zare RN. Measurement of the HD(v′=2,J′=3) product differential cross section for the H+D2 exchange reaction at 1.55±0.05 eV using the photoloc technique. J Chem Phys 1999. [DOI: 10.1063/1.479294] [Citation(s) in RCA: 37] [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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23
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Houston PL. New Laser-Based and Imaging Methods for Studying the Dynamics of Molecular Collisions. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp960131f] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Paul L. Houston
- Department of Chemistry, Cornell University, Ithaca, New York 14853-1301
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Schatz GC. Scattering Theory and Dynamics: Time-Dependent and Time-Independent Methods. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp953344y] [Citation(s) in RCA: 81] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- George C. Schatz
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208-3113
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Zhao Z, Chapman WB, Nesbitt DJ. State‐resolved differential scattering in open‐shell collisions: Cl(2P3/2)+HCl from high‐resolution infrared‐laser Dopplerimetry. J Chem Phys 1996. [DOI: 10.1063/1.471060] [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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27
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Schnieder L, Seekamp-Rahn K, Borkowski J, Wrede E, Welge KH, Aoiz FJ, Bañiares L, D'Mello MJ, Herrero VJ, Rábanos VS, Wyatt RE. Experimental Studies and Theoretical Predictions for the H + D2 rarr > HD + D Reaction. Science 1995; 269:207-10. [PMID: 17789848 DOI: 10.1126/science.269.5221.207] [Citation(s) in RCA: 156] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The H + H(2) exchange reaction constitutes an excellent benchmark with which to test dynamical theories against experiments. The H + D(2) (vibrational quantum number v = 0, rotational quantum number j = 0) reaction has been studied in crossed molecular beams at a collision energy of 1.28 electron volts, with the use of the technique of Rydberg atom time-of-flight spectroscopy. The experimental resolution achieved permits the determination of fully rovibrational state-resolved differential cross sections. The high-resolution data allow a detailed assessment of the applicability and quality of quasi-classical trajectory (QCT) and quantum mechanical (QM) calculations. The experimental results are in excellent agreement with the QM results and in slightly worse agreement with the QCT results. This theoretical reproduction of the experimental data was achieved without explicit consideration of geometric phase effects.
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Kuppermann A, Wu YSM. The quantitative prediction and lifetime of a pronounced reactive scattering resonance. Chem Phys Lett 1995. [DOI: 10.1016/0009-2614(95)00655-n] [Citation(s) in RCA: 80] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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29
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Zhao Z, Chapman WB, Nesbitt DJ. State‐resolved rotational energy transfer in open shell collisions: Cl(2P3/2)+HCl. J Chem Phys 1995. [DOI: 10.1063/1.469098] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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30
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Sadeghi R, Skodje RT. Spectral quantization of high energy transition state resonances in the H+H2reaction. J Chem Phys 1993. [DOI: 10.1063/1.466014] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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31
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Klepeis NE, East ALL, Császár AG, Allen WD, Lee TJ, Schwenke DW. The [FHCl]−molecular anion: Structural aspects, global surface, and vibrational eigenspectrum. J Chem Phys 1993. [DOI: 10.1063/1.466133] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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32
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Kitsopoulos TN, Buntine MA, Baldwin DP, Zare RN, Chandler DW. Reaction Product Imaging: The H + D2 Reaction. Science 1993; 260:1605-10. [PMID: 17810201 DOI: 10.1126/science.260.5114.1605] [Citation(s) in RCA: 122] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The differential cross section for the H + D(2) --> HD + D reaction has been measured using a technique called reaction product imaging. In this experiment, a photolytically produced beam of hydrogen (H) atoms crossed a beam of cold deuterium (D(2)) molecules. Product D atoms were ionized at the intersection of the two particle beams and accelerated toward a position-sensitive detector. The ion images appearing on the detector are two-dimensional projections of the three-dimensional velocity distribution of the D atom products. The reaction was studied at nominal center-of-mass collision energies of 0.54 and 1.29 electron volts. At the lower collision energy, the measured differential cross section for D atom production, summed over all final states of the HD(v,J) product, is in good agreement with recent quasi-classical trajectory calculations. At the higher collision energy, the agreement between the theoretical predictions and experimental results is less favorable.
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Michelsen HA, Rettner CT, Auerbach DJ, Zare RN. Effect of rotation on the translational and vibrational energy dependence of the dissociative adsorption of D2on Cu(111). J Chem Phys 1993. [DOI: 10.1063/1.464535] [Citation(s) in RCA: 236] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Adelman DE, Filseth SV, Zare RN. Integral rate constant measurements of the reaction H +D2O → HD(v’, j’)+OD. J Chem Phys 1993. [DOI: 10.1063/1.464991] [Citation(s) in RCA: 43] [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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35
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Integral rate constant measurements of the reaction H + D2 → HD (v′ = 1, j′) + D at high collision energies. Chem Phys Lett 1993. [DOI: 10.1016/0009-2614(93)85312-c] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Aoiz FJ, Herrero VJ, Sáez Rábanos V. Quasiclassical state to state reaction cross sections for D+H2(v=0, j=0)→HD(v’,j’)+H. Formation and characteristics of short‐lived collision complexes. J Chem Phys 1992. [DOI: 10.1063/1.463514] [Citation(s) in RCA: 152] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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37
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Adelman DE, Shafer NE, Kliner DAV, Zare RN. Measurement of relative state‐to‐state rate constants for the reaction D+H2(v, j)→HD(v’, j’)+H. J Chem Phys 1992. [DOI: 10.1063/1.463504] [Citation(s) in RCA: 62] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Jakubetz W, Sokolovski D, Connor JNL, Schatz GC. Comparison of quasiclassical and quantum dynamics for resonance scattering in the Cl+HCl→ClH+Cl reaction. J Chem Phys 1992. [DOI: 10.1063/1.463703] [Citation(s) in RCA: 21] [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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39
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Mandy ME, Martin PG. Quasiclassical integral cross sections for H+H2(0,j=0,2)→H2(1,j’=1,3,5)+H. J Chem Phys 1992. [DOI: 10.1063/1.463623] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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40
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Richard-Viard M, Nguyen Vien G, Kubach C. State-to-state cross sections for low-energy IH (ν = 0 + I collisions. Chem Phys Lett 1992. [DOI: 10.1016/0009-2614(92)80860-e] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Aoiz FJ, Herrero VJ, Sáez Rábanos V. Classical collision complexes in the D+H2(v=0, j=0)→HD(v’, j’)+H reaction. J Chem Phys 1991. [DOI: 10.1063/1.461350] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
42
|
Persky A, Kornweitz H. Oscillations in the collision-energy dependence of partial cross sections and of product energy distributions for the backward scattering in the reaction D+H2(ν=1, j=0)→HD(ν′, all j′)+H. Chem Phys Lett 1991. [DOI: 10.1016/0009-2614(91)80022-p] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
43
|
Kliner DAV, Rinnen K, Buntine MA, Adelman DE, Zare RN. Product internal‐state distribution for the reaction H+HI→H2+I. J Chem Phys 1991. [DOI: 10.1063/1.461017] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
44
|
Kliner DAV, Adelman DE, Zare RN. Comparison of experimental and theoretical integral cross sections for D+H2(v=1, j=1)→HD(v’=1, j’)+H. J Chem Phys 1991. [DOI: 10.1063/1.461016] [Citation(s) in RCA: 90] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
45
|
Rinnen K, Buntine MA, Kliner DAV, Zare RN, Huo WM. Quantitative determination of H2, HD, and D2 internal‐state distributions by (2+1) resonance‐enhanced multiphoton ionization. J Chem Phys 1991. [DOI: 10.1063/1.461478] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
46
|
Pollard JE, Syage JA, Johnson LK, Cohen RB. Collinear reactive scattering of state‐selected H+2+He→HeH++H: A method for probing dynamical resonances. J Chem Phys 1991. [DOI: 10.1063/1.460718] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
47
|
Kornweitz H, Persky A, Baer M. Quantum mechanical effects in the three dimensional low energy D+H2→HD+H reaction. J Chem Phys 1991. [DOI: 10.1063/1.460487] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
48
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Schatz GC, Sokolovski D, Connor JNL. Influence of transition state resonances on integral cross sections and product rovibrational distributions for the Cl+HCl→ClH+Cl reaction. J Chem Phys 1991. [DOI: 10.1063/1.460617] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
49
|
Schatz GC, Sokolovski D, Connor JNL. Resonances in heavy + light–heavy atom reactions: influence on differential and integral cross-sections and on transition-state photodetachment spectra. ACTA ACUST UNITED AC 1991. [DOI: 10.1039/dc9919100017] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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