Positron trapping at H- and D- ions in MgO crystals

被引：0
|
作者：
Monge, MA
Pareja, R
Gonzalez, R
Chen, Y
机构：
[1] Univ Carlos III Madrid, Dept Fis, E-28911 Leganes, Spain
[2] US DOE, ER 131, Div Mat Sci, Washington, DC USA
来源：
POSITRON ANNIHILATION: ICPA-11 - PROCEEDINGS OF THE 11TH INTERNATIONAL CONFERENCE ON POSITRON ANNIHILATION, KANSAS CITY, MISSOURI, USA, MAY 1997 | 1997年 / 255-2卷
关键词：
PsH; PsD; self-trapped positrons; positron trapping; MgO;
D O I：
10.4028/www.scientific.net/MSF.255-257.566
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Low-temperature positron lifetime and Doppler-broadening measurements Stave been performed on MgO single crystals containing either H- or D-. The temperature dependence of the mean positron lifetime and the parameter S indicate that the positron trapping coefficient for H-(D-) ions increases with temperature. A model involving delocalized, self-trapped, and bound states [e(+)-H-] and [e(+)-D-] for positrons predicts the temperature dependence observed for the annihilation parameters.
引用
下载
收藏
页码：566 / 568
页数：3
相关论文
共 50 条
  • [31] ANGULAR AND ENERGY-DISTRIBUTIONS OF SURFACE PRODUCED H- AND D- IONS IN A BARIUM SURFACE CONVERSION SOURCE
    HEEREN, RMA
    DEGRAAF, MJ
    CIRIC, D
    HOPMAN, HJ
    KLEYN, AW
    JOURNAL OF APPLIED PHYSICS, 1994, 75 (09) : 4340 - 4351
  • [32] GENERATION OF H-, D- IONS ON COMPOSITE SURFACES WITH APPLICATION TO SURFACE PLASMA ION-SOURCE SYSTEMS
    HISKES, JR
    KARO, AM
    WIMMER, E
    FREEMAN, AJ
    CHUBB, SR
    JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS, 1984, 2 (02): : 670 - 674
  • [33] CHARGE-TRANSFER AND ELECTRON DETACHMENT FOR COLLISIONS OF H- AND D- WITH H
    HUELS, MA
    CHAMPION, RL
    DOVERSPIKE, LD
    WANG, Y
    PHYSICAL REVIEW A, 1990, 41 (09): : 4809 - 4815
  • [34] Electron heat transport in the magnetic filter of a volume plasma-based source of H-/D- ions
    Veresov, OL
    Grigorenko, SV
    Udovichenko, SY
    TECHNICAL PHYSICS, 2000, 45 (08) : 1009 - 1013
  • [35] Associative ionization in collisions of H2+, D2+ with H- and D-
    Universite Catholique de Louvain, Louvain-la-Neuve, Belgium
    J Phys B At Mol Opt Phys, 21 (4887-4894):
  • [36] Positron bound states on hydride ions in thermochemically reduced MgO single crystals
    Monge, MA
    Pareja, R
    Gonzalez, R
    Chen, Y
    PHYSICAL REVIEW B, 1996, 54 (13): : 8950 - 8953
  • [37] Characterization of the 1De autodetaching resonance in H- and D-
    Rislove, DC
    Strauss, CEM
    Bryant, HC
    Gulley, MS
    Funk, DJ
    Zhao, XM
    Miller, WA
    PHYSICAL REVIEW A, 1998, 58 (03): : 1889 - 1897
  • [38] CHARGE-TRANSFER OF H- AND D- WITH O2
    CHAPLIN, PE
    SNOW, WR
    BULLETIN OF THE AMERICAN PHYSICAL SOCIETY, 1975, 20 (02): : 232 - 233
  • [39] EXPERIMENTAL CROSS SECTION FOR PHOTODETACHMENT OF ELECTRONS FROM H- AND D-
    BRANSCOMB, LM
    SMITH, SJ
    PHYSICAL REVIEW, 1955, 98 (04): : 1028 - 1034
  • [40] TRIUMF's H-/D- Ion Source Development to Date
    Jayamanna, K.
    Ames, F.
    Bylinskii, Y.
    Lovera, M.
    Louie, D.
    Minato, B.
    Portilla, D.
    Saminathan, S.
    20TH INTERNATIONAL CONFERENCE ON ION SOURCES, 2024, 2743
12345