ANNIHILATION GAMMA-RAY SPECTRA FROM POSITRON-MOLECULE INTERACTIONS

被引:35
作者
TANG, S
TINKLE, MD
GREAVES, RG
SURKO, CM
机构
关键词
D O I
10.1103/PhysRevLett.68.3793
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We report measurements of annihilation gamma-ray spectra from the isolated two-body interaction of room-temperature positrons with a range of chemical species. The Doppler broadening of these spectra provides information about the wave functions of the annihilating particles. For a variety of hydrocarbons, we observe linewidths of approximately 2.2 keV (FWHM), while for perfluorocarbons the widths are approximately 2.8 keV, as compared with 1.7 keV for molecular hydrogen. The implications of these results for a number of physical problems are discussed.
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页码:3793 / 3796
页数:4
相关论文
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