Double ionization of molecular hydrogen by fast electron impact

被引:0
作者
Weck, P. F. [1 ]
机构
[1] Univ Nevada, Dept Chem, Las Vegas, NV 89154 USA
关键词
hydrogen; collision; ionization; analytical method; CROSS-SECTIONS; HIGH-ENERGIES; SPECTROMETER; 3E; PHOTOIONIZATION; MECHANISMS; ATOMS; 2E;
D O I
暂无
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We propose a theoretical model of the double ionization of homonuclear diatomic targets by fast electron impact. By application of two-effective-center continuum waves to describe the ejected electrons in the exit channel and by use of Nordsieck-type integrals, an expression has been obtained by an analytical treatment for the fivefold differential cross section, the relevant quantity to describe the kinematically complete collisions in the coplanar geometry. The correlate motion of the ejected electrons is taken into account by means of adequate Sommerfeld parameters.
引用
收藏
页码:466 / 476
页数:11
相关论文
共 27 条
[1]   Role of the helium ground state in (e,3e) processes -: art. no. 012711 [J].
Ancarani, LU ;
Montagnese, T ;
Dal Cappello, C .
PHYSICAL REVIEW A, 2004, 70 (01) :012711-1
[2]   Double-ionization mechanisms and asymmetry parameters for (e,3e-1e) reactions [J].
Berakdar, J .
PHYSICAL REVIEW A, 1996, 53 (04) :2281-2288
[3]   TRIPLY-DIFFERENTIAL CROSS-SECTIONS FOR IONIZATION OF HYDROGEN-ATOMS BY ELECTRONS AND POSITRONS [J].
BRAUNER, M ;
BRIGGS, JS ;
KLAR, H .
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1989, 22 (14) :2265-2287
[4]   THEORY OF (E, 2E) REACTIONS [J].
BYRON, FW ;
JOACHAIN, CJ .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1989, 179 (04) :211-272
[5]  
BYRON FW, 1967, PHYS REV A, V1, P164
[6]  
BYRON FW, 1983, PHYS LETT A, V99, P9
[7]   A multidetection, multicoincidence spectrometer for (e,2e) and (e,3e) electron impact ionization measurements [J].
Duguet, A ;
Lehmam-Bennani, A ;
Lecas, M ;
El Marji, B .
REVIEW OF SCIENTIFIC INSTRUMENTS, 1998, 69 (10) :3524-3536
[8]  
Janev R K, 1995, ATOMIC MOL PROCESSES
[9]   Role of the ground state in electron-atom double ionization [J].
Jones, S ;
Madison, DH .
PHYSICAL REVIEW LETTERS, 2003, 91 (07)
[10]   Photoionization with excitation and double photoionization of the helium isoelectronic sequence [J].
Kheifets, AS ;
Bray, I .
PHYSICAL REVIEW A, 1998, 58 (06) :4501-4511