1
|
Abstract
The role of the geometric phase effect in chemical reaction dynamics has long been a topic of active experimental and theoretical investigations. The topic has received renewed interest in recent years in cold and ultracold chemistry where it was shown to play a decisive role in state-to-state chemical dynamics. We provide a brief review of these developments focusing on recent studies of O + OH and hydrogen exchange in the H + H 2 and D + HD reactions at cold and ultracold temperatures. Non-adiabatic effects in ultracold chemical dynamics arising from the conical intersection between two electronic potential energy surfaces are also briefly discussed. By taking the hydrogen exchange reaction as an illustrative example it is shown that the inclusion of the geometric phase effect captures the essential features of non-adiabatic dynamics at collision energies below the conical intersection.
Collapse
|
2
|
Mukherjee N, Zare RN. Can stimulated Raman pumping cause large population transfers in isolated molecules? J Chem Phys 2011; 135:184202. [DOI: 10.1063/1.3657832] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
3
|
Bartlett NCM, Jankunas J, Zare RN. False estimates of stimulated Raman pumping efficiency caused by the optical Stark effect. J Chem Phys 2011; 134:234310. [PMID: 21702559 DOI: 10.1063/1.3601923] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
One technique for measuring the fraction of molecules pumped to the excited state in stimulated Raman pumping (SRP) is to record the depletion of molecules in the lower state by resonance enhanced multiphoton ionization (REMPI). The presence of electric fields on the order of 10(7) V/cm arising from the pulsed SRP laser beams is sufficient to shift the line position of the REMPI transition to such an extent that the estimate of the pumping efficiency is overestimated unless this shift is accounted for.
Collapse
Affiliation(s)
- N C-M Bartlett
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, USA
| | | | | |
Collapse
|
4
|
|
5
|
Hankel M, Smith SC, Allan RJ, Gray SK, Balint-Kurti GG. State-to-state reactive differential cross sections for the H+H2→H2+H reaction on five different potential energy surfaces employing a new quantum wavepacket computer code: DIFFREALWAVE. J Chem Phys 2006; 125:164303. [PMID: 17092069 DOI: 10.1063/1.2358350] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
State-to-state differential cross sections have been calculated for the hydrogen exchange reaction, H+H2-->H2+H, using five different high quality potential energy surfaces with the objective of examining the sensitivity of these detailed cross sections to the underlying potential energy surfaces. The calculations were performed using a new parallel computer code, DIFFREALWAVE. The code is based on the real wavepacket approach of Gray and Balint-Kurti [J. Chem. Phys. 108, 950 (1998)]. The calculations are parallelized over the helicity quantum number Omega' (i.e., the quantum number for the body-fixed z component of the total angular momentum) and wavepackets for each J,Omega' set are assigned to different processors, similar in spirit to the Coriolis-coupled processors approach of Goldfield and Gray [Comput. Phys. Commun. 84, 1 (1996)]. Calculations for J=0-24 have been performed to obtain converged state-to-state differential cross sections in the energy range from 0.4 to 1.2 eV. The calculations employ five different potential energy surfaces, the BKMP2 surface and a hierarchical family of four new ab initio surfaces [S. L. Mielke, et al., J. Chem. Phys. 116, 4142 (2002)]. This family of four surfaces has been calculated using three different hierarchical sets of basis functions and also an extrapolation to the complete basis set limit, the so called CCI surface. The CCI surface is the most accurate surface for the H3 system reported to date. Our calculations of differential cross sections are the first to be reported for the A2, A3, A4, and CCI surfaces. They show that there are some small differences in the cross sections obtained from the five different surfaces, particularly at higher energies. The calculations also show that the BKMP2 performs well and gives cross sections in very good agreement with the results from the CCI surface, displaying only small divergences at higher energies.
Collapse
Affiliation(s)
- Marlies Hankel
- Centre for Computational Molecular Science, The University of Queensland, Queensland QLD 4072, Australia.
| | | | | | | | | |
Collapse
|
6
|
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.
Collapse
Affiliation(s)
- Alexey Teslja
- Department of Chemistry, Columbia University, New York, New York 10027, USA
| | | |
Collapse
|
7
|
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]
|
8
|
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.
Collapse
Affiliation(s)
- Florian Ausfelder
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, USA
| | | | | | | | | | | | | |
Collapse
|
9
|
Kendrick BK. Geometric Phase Effects in Chemical Reaction Dynamics and Molecular Spectra. J Phys Chem A 2003. [DOI: 10.1021/jp021865x] [Citation(s) in RCA: 100] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Brian K. Kendrick
- Theoretical Division (T-12, MS-B268), Los Alamos National Laboratory, Los Alamos, New Mexico 87545
| |
Collapse
|
10
|
Kendrick BK. Quantum reactive scattering calculations for the D+H2→HD+H reaction. J Chem Phys 2003. [DOI: 10.1063/1.1573183] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
11
|
Halász G, Vibók Á, Mebel AM, Baer M. A survey ofab initioconical intersections for the H+H2 system. J Chem Phys 2003. [DOI: 10.1063/1.1536925] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
12
|
Ab initio non-adiabatic coupling elements: the conical intersection between the 22A′ and the 32A′ of the H+H2 system. Chem Phys Lett 2002. [DOI: 10.1016/s0009-2614(02)00623-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
13
|
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.
Collapse
Affiliation(s)
- Félix Fernández-Alonso
- Istituto di Struttura della Materia-Consiglio Nazionale delle Ricerche, Area della Ricerca di Roma-Tor Vergata, 00133 Rome, Italy.
| | | |
Collapse
|
14
|
Abrol R, Shaw A, Kuppermann A, Yarkony DR. Accurate first-derivative nonadiabatic couplings for the H3 system. J Chem Phys 2001. [DOI: 10.1063/1.1390510] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
15
|
Picconatto CA, Srivastava A, Valentini JJ. The H+n-C5H12/n-C6H14→H2(v′,j′)+C5H11/C6H13 reactions: State-to-state dynamics and models of energy disposal. J Chem Phys 2001. [DOI: 10.1063/1.1349089] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
16
|
Picconatto CA, Srivastava A, Valentini JJ. Reactions at suprathreshold energy: Evidence of a kinematic limit to the internal energy of the products. J Chem Phys 2001. [DOI: 10.1063/1.1333706] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
17
|
Senba M, Fleming DG, Arseneau DJ, Mayne HR. Hot atom reaction yields in Mu*+H2 and T*+H2 from quasiclassical trajectory cross sections on the Liu–Siegbahn–Truhlar–Horowitz surface. J Chem Phys 2000. [DOI: 10.1063/1.481558] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
18
|
|
19
|
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
Collapse
|
20
|
Fernández-Alonso F, Bean BD, Zare RN. Differential cross sections for H+D2→HD(v′=1, J′=1,5,8)+D at 1.7 eV. J Chem Phys 1999. [DOI: 10.1063/1.479191] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
21
|
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
|
22
|
Kennedy S, Dharmesena K, Moser S, Auzinsh M, Shafer-Ray NE. A method to obtain meV-collision-energy resolution in scattering studies: application to the H+D2→HD(ν′=0,j′)+D(θrel<80°) reaction at Erel=1.275±0.011 eV. Chem Phys 1999. [DOI: 10.1016/s0301-0104(99)00139-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
23
|
Lanzisera DV, Valentini JJ. State-to-State Dynamics of the H + CDCl3(v1‘‘=1) → HD(v‘,j‘) + CCl3 Reaction. J Phys Chem A 1997. [DOI: 10.1021/jp970917t] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
24
|
Wrede E, Schnieder L. On the appearance of resonances in reactive scattering: An experimental study of the H+D2→HD+D reaction at collision energies near 1.29 eV. J Chem Phys 1997. [DOI: 10.1063/1.474378] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
25
|
Wrede E, Schnieder L, Welge KH, Aoiz FJ, Bañares L, Herrero VJ, Martínez-Haya B, Sáez Rábanos V. The H+D2 reaction in the vicinity of the conical intersection. J Chem Phys 1997. [DOI: 10.1063/1.473745] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
26
|
Summerfield D, Costen ML, Ritchie GAD, Hancock G, Hancock TWR, Orr-Ewing AJ. The effect of reagent translational energy on the dynamics of the reaction O(3P)+CS(X 1Σ+)→CO(X 1Σ+)+S(3P). J Chem Phys 1997. [DOI: 10.1063/1.474097] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
27
|
Affiliation(s)
- David R. Yarkony
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218
| |
Collapse
|
28
|
Müller U, Cosby PC. Product state distributions in the dissociation of H3 (n=2,3) Rydberg states. J Chem Phys 1996. [DOI: 10.1063/1.472220] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
29
|
Affiliation(s)
- C. Bradley Moore
- Department of Chemistry, University of California at Berkeley and Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720-1460
| | - Ian W. M. Smith
- School of Chemistry, The University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| |
Collapse
|
30
|
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
| |
Collapse
|
31
|
Kendrick B, Pack RT. Geometric phase effects in H+O2 scattering. I. Surface function solutions in the presence of a conical intersection. J Chem Phys 1996. [DOI: 10.1063/1.471460] [Citation(s) in RCA: 92] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
32
|
Simpson WR, Rakitzis TP, Kandel SA, Orr‐Ewing AJ, Zare RN. Reaction of Cl with vibrationally excited CH4 and CHD3: State‐to‐state differential cross sections and steric effects for the HCl product. J Chem Phys 1995. [DOI: 10.1063/1.470305] [Citation(s) in RCA: 211] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
33
|
Xu H, Shafer‐Ray NE, Merkt F, Hughes DJ, Springer M, Tuckett RP, Zare RN. Measurement of the state‐specific differential cross section for the H+D2→HD(v′=4, J′=3)+D reaction at a collision energy of 2.2 eV. J Chem Phys 1995. [DOI: 10.1063/1.470604] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
34
|
Chang J, Brown NJ. Comparison of the quantum dynamics and sensitivity analysis for different isotopomers of the H+H2 reaction. J Chem Phys 1995. [DOI: 10.1063/1.469596] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
35
|
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.
Collapse
|
36
|
Lanzisera DV, Valentini JJ. Disposal of reactant vibrational excitation in adiabatically endothermic reactions. I. H+D2(v″=1, j″=2)→HD(v′, j′)+D. J Chem Phys 1995. [DOI: 10.1063/1.470710] [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
|
37
|
Band YB, Tuvi I. Convergence of diabatic to adiabatic scattering calculations. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1995; 51:R3403-R3406. [PMID: 9912114 DOI: 10.1103/physreva.51.r3403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
|
38
|
Wu YSM, Kuppermann A. The importance of the geometric phase effect for the H + D2 → HD + D reaction. Chem Phys Lett 1995. [DOI: 10.1016/0009-2614(95)00069-g] [Citation(s) in RCA: 84] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
39
|
Aoiz FJ, Bañares L, D’Mello MJ, Herrero VJ, Rábanos VS, Schnieder L, Wyatt RE. Quantum mechanical and quasiclassical calculations for the H+D2→HD+D reaction: Reaction probabilities and differential cross sections. J Chem Phys 1994. [DOI: 10.1063/1.467362] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
40
|
Moribayashi K, Takada S, Nakamura H. Constant centrifugal potential approximation for atom–diatom chemical reaction dynamics. J Chem Phys 1994. [DOI: 10.1063/1.467244] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
41
|
Aoiz FJ, Buchenau HK, Herrero VJ, Rábanos VS. The D+H2(v=1,j)→HD(v’,j’)+H reaction. A detailed quasiclassical trajectory study. J Chem Phys 1994. [DOI: 10.1063/1.466473] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
42
|
Mandy ME, Martin PG, Keogh WJ. Why quasiclassical cross sections can be rotationally and vibrationally hot. J Chem Phys 1994. [DOI: 10.1063/1.466461] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
|
43
|
Park H, Zare RN. Photoionization dynamics of the NO A 2Σ+ state deduced from energy‐ and angle‐resolved photoelectron spectroscopy. J Chem Phys 1993. [DOI: 10.1063/1.465845] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
44
|
Billing GD, Marković N. Apparatus for coupled 3D wave‐packet solution of reactive scattering problems in hyperspherical coordinates. J Chem Phys 1993. [DOI: 10.1063/1.465229] [Citation(s) in RCA: 60] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
45
|
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.
Collapse
|
46
|
|
47
|
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
|
48
|
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]
|