Intra-atomic electron-electron scattering in p-He collisions (Thomas process) investigated by cold target recoil ion momentum spectroscopy

被引：89

作者：

Mergel, V

Dorner, R

Achler, M

Khayyat, K

Lencinas, S

Euler, J

Jagutzki, O

Nuttgens, S

Unverzagt, M

Spielberger, L

Wu, W

Ali, R

Ullrich, J

Cederquist, H

Salin, A

Wood, CJ

Olson, RE

Belkic, D

Cocke, CL

SchmidtBocking, H

机构：

[1] KANSAS STATE UNIV,MANHATTAN,KS 66506

[2] GESELL SCHWERIONENFORSCH MBH,D-64291 DARMSTADT,GERMANY

[3] STOCKHOLM UNIV,S-10405 STOCKHOLM,SWEDEN

[4] CNRS,F-33405 TALENCE,FRANCE

[5] UNIV BORDEAUX,F-33405 TALENCE,FRANCE

[6] UNIV MISSOURI,ROLLA,MO 65401

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.79.387

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have performed a kinematically complete experiment for the transfer ionization reaction 0.15-1.4 MeV p + He --> H-0 + He2+ + e(-) by measuring the three-dimensional momentum vector of the He2+ ion in coincidence with the scattering angle and the plane of the H-0. In the measured fourfold differential cross section we can clearly distinguish between the independent two-step process of capture plus ionization and the correlated e-e Thomas scattering. We find a upsilon p-(74+/-1) scaling for the total cross section of the e-e Thomas process.

引用

页码：387 / 390

页数：4

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[1] Reformulated impulse approximation (RIA) for charge exchange in fast ion-atom collisions [J].