Strong geometric-phase effects in the hydrogen-exchange reaction at high collision energies: II. Quasiclassical trajectory analysis
Strong geometric-phase effects in the hydrogen-exchange reaction at high collision energies: II. Quasiclassical trajectory analysis
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高碰撞能量下氢交换反应中的强几何相效应:II。
DOI:
10.1080/00268971003610218
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发表时间:
2010
影响因子:
1.7
通讯作者:
Bouakline F
中科院分区:
文献类型:
--
作者:
Bouakline F
Recent calculations on the hydrogen-exchange reaction [Bouaklineet al., J. Chem. Phys.128, 124322 (2008)], have found strong geometric phase (GP) effects in the state-to-state differential cross-sections (DCS), at energies above the energetic minimum of the conical intersection (CI) seam, which cancel out in the integral cross-sections (ICS). In this article, we explain the origin of this cancellation and make other predictions about the nature of the reaction mechanisms at these high energies by carrying out quasiclassical trajectory (QCT) calculations. Detailed comparisons are made with the quantum results by splitting the quantum and the QCT cross-sections into contributions from reaction paths that wind in different senses around the CI and that scatter the products in the nearside and farside directions. Reaction paths that traverse one transition state (1-TS) scatter their products in just the nearside direction, whereas paths that traverse two transition states (2-TS) scatter in both the nearside and farside directions. However, the nearside 2-TS products scatter into a different region of angular phase-space than the 1-TS products, which explains why the GP effects cancel out in the ICS. Analysis of the QCT results also suggests that two separate reaction mechanisms may be responsible for the 2-TS scattering at high energies.
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影响因子:
4.4
作者:
F. Ausfelder;A. Pomerantz;R. Zare;S. Althorpe;F. Aoiz;L. Bañares;J. Castillo
通讯作者:
J. Castillo
DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
F. Fernandez;B. D. Bean;R. Zare;F. Aoiz;L. Bañares;J. Castillo
通讯作者:
J. Castillo
DOI:
--
发表时间:
2003
期刊:
影响因子:
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作者:
M. Child
通讯作者:
M. Child
DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
R. Abrol;Amy Shaw;A. Kuppermann;D. Yarkony
通讯作者:
D. Yarkony
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
S. Althorpe;J. C. Juanes;E. Wrede
通讯作者:
E. Wrede