| Autor: |
D. J. Margaziotis, M. B. Epstein, C. A. Davis, W. T. H. van Oers, H. J. Sebel, H. Postma, A. W. Stetz, J. P. Huber, C. F. Perdrisat, P. R. Poffenberger, H. P. Gubler, V V Punjabi, B K. A. Aniol, W. P. Lee, A. Bracco |
| Rok vydání: |
1988 |
| Předmět: |
|
| Zdroj: |
Physical Review C. 38:2728-2742 |
| ISSN: |
0556-2813 |
| DOI: |
10.1103/physrevc.38.2728 |
| Popis: |
Differential cross sections for the reaction /sup 2/H(p,2p)n at T/sub p/ = 507 and 508 MeV are presented. The kinematics selected included two quasi-free angle pairs: 41.5/sup 0/-41.4/sup 0/ and 30.1/sup 0/-53.75/sup 0/; in addition, data away from the quasi-free condition were obtained in four symmetric angle pairs: 38.1/sup 0/-38.0/sup 0/, 44.1/sup 0/-44.0/sup 0/, 47.1/sup 0/-47.0/sup 0/, and 50.0/sup 0/-50.0/sup 0/, and five asymmetric angles pairs: 30.1/sup 0/-37.0/sup 0/, 30.1/sup 0/-44.0/sup 0/, 30.1/sup 0/-61.0/sup 0/, 30.1/sup 0/-68.0/sup 0/, and 41.5/sup 0/-50.0/sup 0/. The data range over an energy window 100 MeV wide on one of the proton energies, the second energy being defined by the kinematic condition of a single neutron recoiling. The data are compared with the impulse approximation prediction and with the results of a nonrelativistic calculation of the six lowest-order Feynman diagrams describing the reaction. A previously known missing strength for the reaction in the small neutron recoil region is confirmed with much smaller experimental uncertainty; the missing strength persists up to 150 MeV/c neutron recoil. The onset of a systematic cross section excess relative to the impulse approximation near neutron recoil momentum 200 MeV/c is explored in detail. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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