SEPARATION OF PHOTOABSORPTION AND COMPTON-SCATTERING CONTRIBUTIONS TO HE SINGLE AND DOUBLE-IONIZATION

被引：110

作者：

SPIELBERGER, L

JAGUTZKI, O

DORNER, R

ULLRICH, J

MEYER, U

MERGEL, V

UNVERZAGT, M

DAMRAU, M

VOGT, T

ALI, I

KHAYYAT, K

BAHR, D

SCHMIDT, HG

FRAHM, R

SCHMIDTBOCKING, H

机构：

[1] GESELL SCHWERIONENFORSCH INST DARMSTADT,D-64220 DARMSTADT,GERMANY

[2] DESY,HASYLAB,D-22603 HAMBURG,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.74.4615

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have experimentally separated the contributions of photoabsorption and Compton scattering to He single and double ionization for high-energy photon impact by measuring the full momentum vector of the recoiling He1+, 2+ ions. For recoil ions following photoabsorption large momenta and a distinct dipole emission pattern are observed. The ions produced by Compton scattering show small momenta. For the ratio of double to single ionization we find (1.22±0.06)% at 8.8-1.65+1.5 keV for Compton scattering and (1.72±0.12)% at 7.0-1.6+2.1 keV for photoabsorption. We compare our data with recent theories. © 1995 The American Physical Society.

引用

页码：4615 / 4618

页数：4

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