ELASTIC POSITRON-HELIUM SCATTERING NEAR THE POSITRONIUM FORMATION THRESHOLD

被引：18
|
作者：
COLEMAN, PG [1 ]
JOHNSTON, KA [1 ]
COX, AMG [1 ]
GOODYEAR, A [1 ]
CHARLTON, M [1 ]
机构：
[1] UNIV LONDON UNIV COLL,DEPT PHYS & ASTRON,LONDON WC1E 6BT,ENGLAND
来源：
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1992年 / 25卷 / 22期
关键词：
D O I：
10.1088/0953-4075/25/22/006
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Measurements of that part of the total positron-helium cross section not associated with positronium formation have been made for positron energies between 14 and 28 eV. The experimental results do not support the existence of a cusp in the elastic scattering cross section at the positronium formation threshold energy (17.8 eV) as significant as that previously deduced by Campeanu et al.
引用
收藏
页码：L585 / L588
页数：4
相关论文
共 50 条
  • [41] POSITRON-HELIUM SCATTERING IN THE CLOSE-COUPLING APPROACH
    KAHALI, M
    ADHIKARI, SK
    BASU, D
    GHOSH, AS
    CHEMICAL PHYSICS LETTERS, 1995, 239 (4-6) : 344 - 348
  • [42] IONIZATION CROSS-SECTIONS IN POSITRON-HELIUM SCATTERING
    BASU, M
    MAZUMDAR, PS
    GHOSH, AS
    JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1985, 18 (02) : 369 - 377
  • [43] THEORY OF LOW-ENERGY POSITRON-HELIUM SCATTERING
    DRACHMAN, RJ
    PHYSICAL REVIEW, 1966, 144 (01): : 25 - &
  • [44] S-wave resonances in the positron-helium scattering
    Ren, Zhenzhong
    Han, Huili
    Shi, Tingyun
    JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2011, 44 (06)
  • [45] Have positron-helium scattering resonances been observed?
    Antonio Zecca
    The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics, 2006, 37 : 151 - 152
  • [46] POSITRONIUM FORMATION IN POSITRON HELIUM COLLISION
    DEB, NC
    CROTHERS, DSF
    FROMME, D
    JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1990, 23 (16) : L483 - L489
  • [47] Annihilation in low-energy positron-helium scattering
    VanReeth, P
    Humberston, JW
    Iwata, K
    Greaves, RG
    Surko, CM
    JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1996, 29 (12) : L465 - L471
  • [48] Annihilation in low-energy positron-helium scattering
    Van Reeth, P.
    Humberston, J.W.
    Iwata, K.
    Greaves, R.G.
    Surko, C.M.
    1996, Institute of Physics Publishing Ltd, Bristol, United Kingdom (29)
  • [49] Positron-helium scattering: Resonance and differential cross sections
    Chaudhuri, P
    Adhikari, SK
    NUCLEAR PHYSICS A, 1998, 631 : 715C - 719C
  • [50] Threshold behavior of positronium formation in positron-alkali-metal scattering
    Lugovskoy, A. V.
    Utamuratov, R.
    Kadyrov, A. S.
    Stelbovics, A. T.
    Bray, I.
    PHYSICAL REVIEW A, 2013, 87 (04):
12345