Singly ionizing 100-MeV/amu C6+ + He collisions with small momentum transfer

被引：32
|
作者：
Kouzakov, Konstantin A. [1 ,2 ]
Zaytsev, Sergey A. [3 ]
Popov, Yuri V. [2 ]
Takahashi, Masahiko [4 ]
机构：
[1] Moscow MV Lomonosov State Univ, Fac Phys, Dept Nucl Phys & Quantum Theory Collis, Moscow 119991, Russia
[2] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119991, Russia
[3] Khabarovsk State Tech Univ, Dept Phys, Khabarovsk 680035, Russia
[4] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan
来源：
PHYSICAL REVIEW A | 2012年 / 86卷 / 03期
基金：
俄罗斯基础研究基金会;
关键词：
IMPACT IONIZATION; RECOIL-ION;
D O I：
10.1103/PhysRevA.86.032710
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present a theoretical analysis of single ionization of He by C6+ at an impact energy of 100 Mev/amu and a momentum transfer Q = 0.75 a.u. Relativistic, second-order Born, and distorted-wave effects on fully differential cross sections are examined. It is demonstrated that neither of them is able to explain the serious discrepancy observed between theory and experiment when an electron is ejected perpendicular to the direction of momentum transfer. We show, however, that experimental uncertainties, including those due to a velocity spread of the He gas atoms in a supersonic jet, can be responsible for the observed disagreement.
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页数：8
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