Electron spectra for twisted electron collisions
Electron spectra for twisted electron collisions
复制标题
扭曲电子碰撞的电子能谱
DOI:
10.1088/1361-6455/ac41b1
复制
发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Harris, A L
中科院分区:
文献类型:
--
作者:
Plumadore, A;Harris, A L
Ionization collisions have important consequences in many physical phenomena, and the mechanism that leads to ionization is not universal. Double differential cross sections (DDCSs) are often used to identify ionization mechanisms because they exhibit features that distinguish close collisions from grazing collisions. In the angular DDCS, a sharp peak indicates ionization through a close binary collision, while a broad angular distribution points to a grazing collision. In the DDCS energy spectrum, electrons ejected through a binary encounter collision result in a peak at an energy predicted from momentum conservation. These insights into ionization processes are well-established for plane wave projectiles. However, the recent development of sculpted particle wave packets reopens the question of how ionization occurs for these new particle wave forms. We present theoretical DDCSs for (e, 2e) ionization of atomic hydrogen for electron vortex projectiles. Our results predict that the ionization mechanism for vortex projectiles is similar to that of non-vortex projectiles, but that the projectile's momentum uncertainty causes noticeable changes to the shape and magnitude of the vortex DDCSs. Specifically, there is a broadening and splitting of the angular DDCS peak for vortex projectiles, and an increase in the cross section for high energy ejected electrons.
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影响因子:
8.6
作者:
M. Bhattacharya;C. Haimberger;N. Bigelow
通讯作者:
N. Bigelow
DOI:
10.1088/1361-6455/ac1c38
发表时间:
2021
期刊:
Molecular and Optical Physics
影响因子:
--
作者:
Harris, A L
通讯作者:
Harris, A L
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
R. V. Boxem;B. Partoens;J. Verbeeck
通讯作者:
J. Verbeeck
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
S. Chatterjee;S. Kasthurirangan;A. Kelkar;C. Stia;O. Fojón;R. Rivarola;L. Tribedi
通讯作者:
L. Tribedi
DOI:
--
发表时间:
1972
期刊:
影响因子:
--
作者:
W.K. (Bill) Peterson;E. C. Beaty;C. Opal
通讯作者:
C. Opal