Pure ionization cross section of helium and ionization mechanism

被引：9

作者：

Chen, X. M. ^{[1
]}

Lu, Y. X. ^{[1
]}

Gao, Z. M. ^{[1
]}

Cui, Y. ^{[1
]}

Liu, Y. W. ^{[1
]}

Du, J. ^{[1
]}

机构：

[1] Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2007年 / 262卷 / 02期

基金：

中国国家自然科学基金;

关键词：

cross section; pure ionization;

D O I：

10.1016/j.nimb.2007.01.083

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Pure target ionization was investigated for 0.4-6.4 MeV Cq+(q = 1-4) + He and Oq+ (q = 1-4) + He collisions. The double-to-single target ionization ratios R-21 were measured using coincidence techniques. We compare our results with existing experimental results and find they are in good agreement. The ratio R-21 is nearly independent of projectile charge state. The relation of R-21 similar to V is analyzed using the over barrier model (OBM) and ionization probability, which is described in our extended over barrier model. Our calculation agrees well with the experimental results. (c) 2007 Published by Elsevier B.V.

引用

页码：161 / 164

页数：4

共 50 条

[31] The search for oscillations in the near-threshold photo-double ionization cross section of helium
Kleiman, U
Topçu, T
Pindzola, MS
Robicheaux, F
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2006, 39 (04) : L61 - L68
[32] Two-photon double ionization of helium: An experimental lower bound of the total cross section
Antoine, Philippe
Foumouo, Emmanuel
Piraux, Bernard
PHYSICAL REVIEW A, 2008, 78 (02):
[33] Absolute triple differential cross section for electron-impact ionization of helium at 50 eV
Universitaet Kaiserslautern, Kaiserslautern, Germany
J Phys B At Mol Opt Phys, 2 (L67-L73):
[34] Asymptotic behaviour of the total cross section for double ionization of helium-like ions by electrons
Defrance, P
Kereselidze, TM
Noselidze, IL
Tzulukidze, MF
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2001, 34 (23) : 4957 - 4968
[35] (e,2e) triple differential cross section for ionization-excitation of helium
Gupta, S
Srivastava, MK
PRAMANA-JOURNAL OF PHYSICS, 1996, 47 (01): : 79 - 85
[36] (e, 2e) triple differential cross section for ionization-excitation of helium
Univ of Roorkee, Roorkee, India
Pramana J Phys, 1 (79-85):
[37] Absolute triple differential cross section for electron-impact ionization of helium at 50 eV
Roder, J
Ehrhardt, H
Bray, I
Fursa, DV
McCarthy, IE
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1996, 29 (02) : L67 - L73
[38] ENERGY-DEPENDENCE OF THE DOUBLE IONIZATION CROSS-SECTION OF HELIUM AT HIGH-ENERGIES
SIDOROVICH, VA
PHYSICS LETTERS A, 1991, 152 (1-2) : 53 - 58
[39] CALCULATION OF THE ELECTRON-IMPACT-IONIZATION CROSS-SECTION OF HELIUM INCLUDING ELECTRON CORRELATIONS
PAN, C
KELLY, HP
PHYSICAL REVIEW A, 1990, 41 (07): : 3624 - 3633
[40] Absolute triple differential cross section for electron-impact ionization of helium at 40 eV
Roder, J
Ehrhardt, H
Bray, I
Fursa, DV
McCarthy, IE
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1996, 29 (10) : 2103 - 2114

← 1 2 3 4 5 →