Analyzing powers and isotope ratios for theAgnat(p→, intermediate-mass fragment) reaction at 200 MeV
| Autor: | R. Planeta, E. Renshaw, K. Kwiatkowski, Sherry Yennello, L.W. Woo, V. E. Viola |
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| Rok vydání: | 1991 |
| Předmět: | |
| Zdroj: | Physical Review C. 44:2618-2624 |
| ISSN: | 1089-490X 0556-2813 |
| Popis: | Analyzing powers and isotope ratios have been measured for ejectiles with Z\ensuremath{\le}7 emitted at forward angles in the 200-MeV p\ensuremath{\rightarrow}${+}^{\mathrm{nat}}$Ag reaction. The observed analyzing powers are consistent with zero, and thus do not provide evidence for a significant contribution from cluster knockout, or similar direct formation mechanisms. Fragment kinetic-energy spectra above the Coulomb peak are compared with a coalescence calculation. The isotopic composition of the elemental kinetic-energy spectra is found to favor N/Z\ensuremath{\ge}1 nuclei for fragment energies near the exit-channel Coulomb energy, whereas species with N/Z\ensuremath{\le}1 are more abundant in the high-energy spectral tails. This behavior is consistent with the predictions of an accreting source calculation. |
| Databáze: | OpenAIRE |
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