Laboratory Simulation of Direct Positron Annihilation in a Neutral-Hydrogen Galactic Environment
- 29 September 1986
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 57 (13) , 1651-1654
- https://doi.org/10.1103/physrevlett.57.1651
Abstract
The linewidth for thermalized positrons directly annihilating with bound electrons in low-density molecular hydrogen gas has been found to be 1.56 ± 0.09 keV, by use of a Ge detector with a low-energy pulsed positron beam. This linewidth measurement together with previous experimental results makes it possible to determine precisely the composite spectrum due to positrons annihilating in a neutral-hydrogen galactic medium.Keywords
This publication has 15 references indexed in Scilit:
- Direct-annihilation fraction of positrons in a neutral low-density galactic environmentPhysical Review A, 1986
- A possible galactic positron annihilation medium - Neutral hydrogenThe Astrophysical Journal, 1985
- Positron Annihilation in a Simulated Low-Density Galactic EnvironmentPhysical Review Letters, 1984
- Variable positron annihilation radiation from the galactic center regionThe Astrophysical Journal, 1981
- The annihilation of galactic positronsThe Astrophysical Journal, 1979
- Detection of 511 keV positron annihilation radiation from the galactic center directionThe Astrophysical Journal, 1978
- Collisions entre un positron et une molécule d'hydrogène avec excitation de vibrationsJournal de Physique Lettres, 1974
- Positronium-Formation Redshift of the 511-ke V Annihilation LineThe Astrophysical Journal, 1973
- Zero-Point Bubbles in LiquidsPhysical Review Letters, 1968
- Strong Electric Field Experiments on Positronium in GasesPhysical Review B, 1962