ELECTRON-POSITRON INTERACTION IN AROMATIC CRYSTALS

被引：0
|
作者：
SANO, M [1 ]
MURAKAMI, H [1 ]
机构：
[1] TOKYO GAKUGEI UNIV, FAC EDUC, DEPT PHYS, KOGANEI, TOKYO 184, JAPAN
来源：
MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1993年 / 228卷
关键词：
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Electron-positron annihilation spectra obtained from Doppler broadening of 511 keV radiation for hexamethylbenzene (HMB), hexachlorobenzene (HCB) and 2,3-dichloro-9,10-anthraquinone (DCAQ) crystals reveal anisotropic electron momentum distribution, the momentum along the molecular planes being lower than the momentum along the other direction. Positronium is formed in HMB, HCB, and the complexes of durene with trinitrobenzene (TNB), p-chloranil and p-bromanil, but not in DCAQ, anthracene, 9,10-anthraquinone, p-chloranil, nor in the complexes of anthracene with TNB and pyromellitic dianhydride in the solid state.
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收藏
页码：265 / 270
页数：6
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