Imaging of saddle point electron emission in slow p-He collisions

被引:96
作者
Dorner, R
Khemliche, H
Prior, MH
Cocke, CL
Gary, JA
Olson, RE
Mergel, V
Ullrich, J
SchmidtBocking, H
机构
[1] KANSAS STATE UNIV,DEPT PHYS,MANHATTAN,KS 66506
[2] LBNL,BERKELEY,CA 94720
[3] UNIV MISSOURI,ROLLA,MO 65401
[4] GESELL SCHWERIONENFORSCH MBH,D-64291 DARMSTADT,GERMANY
关键词
D O I
10.1103/PhysRevLett.77.4520
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The two-dimensional velocity distribution of electrons emitted in 5-15 keV p-He collisions has been measured for completely determined motion of the nuclei, that is, as a function of the impact parameter and in a well defined scattering plane. The electrons are emitted preferentially in the scattering plane and in the forward direction. The velocity distributions show sharp structures that vary strongly with impact parameter and projectile velocity. The results are compared to classical trajectory calculations.
引用
收藏
页码:4520 / 4523
页数:4
相关论文
共 28 条
[21]   THE VELOCITY DISTRIBUTION OF SADDLE-POINT ELECTRONS [J].
PIEKSMA, M ;
OVCHINNIKOV, SY .
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1994, 27 (19) :4573-4593
[22]   EXPERIMENTAL IDENTIFICATION OF SADDLE-POINT ELECTRONS [J].
PIEKSMA, M ;
OVCHINNIKOV, SY ;
VANECK, J ;
WESTERVELD, WB ;
NIEHAUS, A .
PHYSICAL REVIEW LETTERS, 1994, 73 (01) :46-49
[23]   ANGULAR-DISTRIBUTION OF SADDLE-POINT ELECTRONS IN SLOW H++H COLLISIONS [J].
SOLOVEV, EA .
PHYSICAL REVIEW A, 1990, 42 (03) :1331-1335
[24]  
Ullrich J., 1994, Comments on Atomic and Molecular Physics, V30, P285
[25]  
VANOPPEN G, 1994, EUROPHYS LETT, V27, P279
[26]   TRIPLE-CENTER TREATMENT OF ELECTRON-TRANSFER AND IONIZATION IN HE2+-H AND P-HE+ COLLISIONS [J].
WINTER, TG .
PHYSICAL REVIEW A, 1988, 37 (12) :4656-4670
[27]   TRIPLE-CENTER TREATMENT OF IONIZATION IN P-H COLLISIONS [J].
WINTER, TG ;
LIN, CD .
PHYSICAL REVIEW A, 1984, 29 (06) :3071-3077
[28]   OBSERVATION OF DIRECT IONIZATION OF HE BY HIGHLY-CHARGED IONS AT LOW-VELOCITY [J].
WU, W ;
COCKE, CL ;
GIESE, JP ;
MELCHERT, F ;
RAPHAELIAN, MLA ;
STOCKLI, M .
PHYSICAL REVIEW LETTERS, 1995, 75 (06) :1054-1057