Antiproton stopping power in hydrogen below 120 keV and the Barkas effect
- 1 May 1993
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 47 (5) , 4517-4520
- https://doi.org/10.1103/physreva.47.4517
Abstract
The simultaneous measurement of the spatial coordinates and times of p¯s annihilating at rest in a target at very low density ρ (ρ/, being the STP density) gives the possibility of evaluating the behavior of the p¯ stopping power in at low energies (below 120 keV). It is different from that of protons (the Barkas effect). Moreover, it is shown that a rise at low-energy values (≲1 keV) is needed to agree with experimental data.
Keywords
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