SIMULTANEOUS EXCITATION AND IONIZATION OF HELIUM BY FAST PROJECTILES

被引：49
|
作者：
PEDERSEN, JOP
FOLKMANN, F
机构：
[1] Institute of Physics, University of Aarhus, 6759
来源：
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1990年 / 23卷 / 03期
关键词：
D O I：
10.1088/0953-4075/23/3/014
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The cross sections for simultaneous excitation and ionisation in helium following impact of fast electrons, protons and Cq+(q=3-6) ions have been investigated by measuring the vacuum-ultraviolet radiation from transitions in HE II (np-1s) in the wavelength region 220-315 AA. The cross sections obtained with 500-2000 eV electrons are found to be larger by a factor of 1.4-2.3 than those obtained with protons of the same velocity (0.92-3.76 MeV). The difference is discussed in terms of an interference between two excitation-ionisation mechanisms. © 1990 IOP Publishing Ltd.
引用
收藏
页码：441 / 456
页数：16
相关论文
共 50 条
  • [21] EXCITATION AND IONIZATION OF HELIUM BY FAST PROTONS AND BY THEIR ASSOCIATED SECONDARY ELECTRONS
    BARTELL, DM
    HURST, GS
    BULLETIN OF THE AMERICAN PHYSICAL SOCIETY, 1973, 18 (05): : 801 - 802
  • [22] IONIZATION-EXCITATION OF HELIUM BY FAST CHARGED-PARTICLES
    NAGY, L
    WANG, J
    STRATON, JC
    MCGUIRE, JH
    PHYSICAL REVIEW A, 1995, 52 (02): : R902 - R904
  • [23] IONIZATION PLUS EXCITATION OF HELIUM BY FAST ELECTRON AND PROTON IMPACT
    FULLING, S
    BRUCH, R
    RAUSCHER, EA
    NEILL, PA
    TRABERT, E
    HECKMANN, PH
    MCGUIRE, JH
    PHYSICAL REVIEW LETTERS, 1992, 68 (21) : 3152 - 3155
  • [24] Semiclassical fully differential ionization cross sections of helium with negatively charged fast projectiles
    Jarai-Szabo, Ferenc
    Nagy, Ladislau
    CENTRAL EUROPEAN JOURNAL OF PHYSICS, 2011, 9 (04): : 942 - 947
  • [25] Excitation and Ionization of Ethylene by Charged Projectiles
    Wang Zhi-Ping
    Wang Jing
    Zhang Feng-Shou
    CHINESE PHYSICS LETTERS, 2010, 27 (01)
  • [26] DOUBLE IONIZATION OF HELIUM BY HE+ PROJECTILES
    EDWARDS, AK
    WOOD, RM
    EZELL, RL
    PHYSICAL REVIEW A, 1985, 32 (03): : 1346 - 1347
  • [27] SIMULTANEOUS MULTIPHOTON IONIZATION AND EXCITATION OF HELIUM IN AN INTENSE LASER-BEAM
    MOHAN, M
    JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1973, 6 (07) : 1218 - 1227
  • [28] IONIZATION AND SIMULTANEOUS EXCITATION OF HELIUM-ATOMS BY ELECTRON-IMPACT
    RAEKER, A
    BARTSCHAT, K
    REID, RHG
    JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1994, 27 (14) : 3129 - 3138
  • [29] DISSOCIATIVE IONIZATION OF MOLECULES BY FAST PROJECTILES
    EDWARDS, AK
    WOOD, RM
    DAVIS, JL
    EZELL, RL
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1989, 197 : 60 - NUCL
  • [30] EXCITATION AND IONIZATION OF HELIUM BY ELECTRONS
    MILLER, WF
    PLATZMAN, RL
    RADIATION RESEARCH, 1954, 1 (06) : 554 - 554
12345