Evidence of complex positron-ammonia interaction in ammonia gas |
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| Authors: | J.D. McNutt W.W. Kinnison |
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| Affiliation: | Department of Physics, University of Texas at Arlington, Arlington, Texas 76010, USA |
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| Abstract: | Positron annihilation in ammonia gas at temperatures of ?19°C, 22,5°C, and 95°C in the density range 1.76 × 10?4 g/cm3 to 6.63 × 10?3 g/cm3 is investigated. 1Zeff for orthopositronium annihilation is 0.58 ± 0.04 Zeff/ Z for positrons not forming positronium varies from about 117 to 1329. |
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