Abstract
The angular correlation of the photons of two-quantum annihilation in NaCl crystal was measured at temperatures ranging from 77 to 500 K. The data obtained clearly showed a narrow peak which was earlier observed only at low temperatures. The positronium nature of this peak was examined by applying a magnetic field. The positronium effective mass was found to be (1.5±0.2)2 m0.
Original language | English |
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Pages (from-to) | 1067-1069 |
Number of pages | 3 |
Journal | Solid State Communications |
Volume | 44 |
Issue number | 7 |
DOIs | |
Publication status | Published - 1982 |
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics