Near-threshold rotational excitation of molecular ions by electron impact

Near-threshold rotational excitation of molecular ions by electron impact
复制标题

通过电子碰撞对分子离子进行近阈值旋转激发

DOI:
10.1088/0953-4075/39/20/023
复制
发表时间:
2006
期刊:
Atomic, Molecular and Optical Physics
影响因子:
--
通讯作者:
Faure A
Faure A
中科院分区:
--
文献类型:
--
作者:
Faure A

文献摘要

参考文献

被引文献

相似文献

在低冲击能下,从头计算了电子对H+ 3旋转激发的新截面。结合r矩阵波函数的绝热核旋转(ANR)近似的有效性,通过与基于kokouline和Greene (2003 Phys)处理的旋转振动量子缺陷理论计算的比较来评估。Rev. A 68 012703)。纯ANR激发截面精确到阈值,除非存在大的振荡里德伯共振。这些共振发生在ΔJ= 1的跃迁中,是由闭通道效应引起的。导出了一个简单的解析公式,用于在3通道问题中平均这些共振的旋转概率。根据吸引库仑场的维格纳定律,旋转激励截面在阈值处较大且有限,封闭通道的贡献显著但中等。
New cross sections for the rotational excitation of H+ 3 by electrons are calculated ab initio at low impact energies. The validity of the adiabatic-nuclei-rotation (ANR) approximation, combined with R-matrix wavefunctions, is assessed by comparison with rovibrational quantum defect theory calculations based on the treatment of Kokoouline and Greene (2003 Phys. Rev. A 68 012703). Pure ANR excitation cross sections are shown to be accurate down to threshold, except in the presence of large oscillating Rydberg resonances. These resonances occur for transitions with ΔJ= 1 and are caused by closed-channel effects. A simple analytic formula is derived for averaging the rotational probabilities over such resonances in a 3-channel problem. In accord with the Wigner law for an attractive Coulomb field, rotational excitation cross sections are shown to be large and finite at threshold, with a significant but moderate contribution from closed-channels.
DOI: --
发表时间: 1956
期刊:
影响因子: --
作者:
D. Chase
通讯作者: D. Chase
电子碰撞对对称顶分子离子的旋转激发
DOI: 10.1103/physreva.12.396
发表时间: 1975
期刊: Physical Review A
影响因子: 2.9
作者:
S. Chu
通讯作者: S. Chu
线性分子离子的电子撞击旋转激发
DOI: 10.1046/j.1365-8711.2001.04480.x
发表时间: 2001
影响因子: 4.8
作者:
A. Faure;J. Tennyson
通讯作者: J. Tennyson
H3 分子的光断裂,包括 Jahn-Teller 耦合效应
DOI: 10.1103/physreva.69.032711
发表时间: 2004
期刊: Physical Review A
影响因子: 2.9
作者:
V. Kokoouline;C. Greene
通讯作者: C. Greene
慢电子对分子离子的旋转激发
DOI: --
发表时间: 1963
期刊:
影响因子: --
作者:
R. Stabler
通讯作者: R. Stabler