Open AccessPRODUCTION OF VACUUM POSITRONIUM ATOMS
Author(s) -
Ran Han,
Guo Xue-Zhe,
Huihui Weng,
Xiaobo Shi,
Lihua Xie
Publication year - 1991
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.40.205
Subject(s) - positronium , positron , annihilation radiation , atomic physics , annihilation , germanium , radiation , physics , spectral line , antimatter , positron annihilation , materials science , doppler broadening , nuclear physics , electron , silicon , optoelectronics , astronomy
Positronium atoms are formed efficiently by slow positron beam hitting a solid target surface in vacuum. The fraction of positrons which formed positroniums is determined by applying the "peak method" to the energy spectra of the positron annihilation radiation measured at different target temperatures and incident positron energies. The fraction is dependent on the target material, temperature and incident positron energy. For germanium, the fraction is as high as 80%.