TY - JOUR
T1 - X-ray emission of hollow atoms formed by highly charged argon and xenon ions below a beryllium surface
AU - Zhao, Yongtao
AU - Xiao, Guoqing
AU - Zhang, Xiaoan
AU - Yang, Zhihu
AU - Zhang, Yanping
AU - Zhan, Wenlong
AU - Chen, Ximeng
AU - Li, Fuli
PY - 2007/5
Y1 - 2007/5
N2 - The X-ray emission induced by highly charged argon and xenon ions impinging on a beryllium surface is investigated. It is found that spectra of the X-ray induced by Ar17,18+ interacting with the surface are very different from those of the X-ray induced by Ar17,18+ interacting with residual gases. The result provides an experimental evidence for the existence of hollow atoms below the surface. Several unexpected X-ray lines are also found in the experiment. Firstly, K X-rays are observed when Ar16+ ions which initially have no K shell holes interact with the surface. Secondly, if there are more than 2 M shell vacancies at the initial time, strong Mαα two-electron-one-photon (TEOP) transitions are found in the collisions of Xe28+,29+,30+ ions with the surface.
AB - The X-ray emission induced by highly charged argon and xenon ions impinging on a beryllium surface is investigated. It is found that spectra of the X-ray induced by Ar17,18+ interacting with the surface are very different from those of the X-ray induced by Ar17,18+ interacting with residual gases. The result provides an experimental evidence for the existence of hollow atoms below the surface. Several unexpected X-ray lines are also found in the experiment. Firstly, K X-rays are observed when Ar16+ ions which initially have no K shell holes interact with the surface. Secondly, if there are more than 2 M shell vacancies at the initial time, strong Mαα two-electron-one-photon (TEOP) transitions are found in the collisions of Xe28+,29+,30+ ions with the surface.
KW - Direct recombination (DR)
KW - Highly charged ion (HCI)
KW - Hollow atom (HA)
KW - TEOP transitions
KW - X-rays
UR - https://www.scopus.com/pages/publications/34147105473
U2 - 10.1016/j.nimb.2006.12.178
DO - 10.1016/j.nimb.2006.12.178
M3 - 文章
AN - SCOPUS:34147105473
SN - 0168-583X
VL - 258
SP - 121
EP - 124
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
IS - 1
ER -