THE POPULATIONS OF RYDBERG STATES OF IONS EMERGING FROM SOLID-SURFACES

被引：5
|
作者：
HAY, HJ
TREACY, PB
机构：
[1] Department of Nuclear Physics, Research School of Physical Sciences, Australian National University, Canberra
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1990年 / 48卷 / 1-4期
关键词：
D O I：
10.1016/0168-583X(90)90084-8
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Analysis of decays of Rydberg ions produced in beam-foil conditions shows that populations are observed to emerge in the form n-β, where n is the principal quantum number and the index β is significantly less than the value 3 expected from most capture models. For 130 MeV Br ions excited by carbon, the high-angular-momentum (l) cascade may be described by β = 3 with a truncated l-value, but a direct cascade, with l = 0, requires β = 2.4. A calculation is described of the effects of the in-target stopping powe causing a change of the initial population via Landau-Zener type level anticrossings. Evidence is shown that the low-l population does suffer. © 1990.
引用
收藏
页码：107 / 110
页数：4
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