| タイトル | Measurements of n-p correlations in the reaction of relativistic neon with uranium |
| 著者（英） | Bistirlich, J.; Crowe, K. M.; Murphy, D. L.; Frankel, K.; Hashimoto, O.; Bowman, H.; McDonald, W. J.; Salomon, M.; Rasmussen, J. O.; Sullivan, J. P.; Yoo, E.; Xu, J. S.; Ridout, J.; Schimmerling, W. |
| 発行日 | 1986-01-01
1986 |
| 言語 | eng |
| 内容記述 | We report a preliminary measurement of coincident neutron-proton pairs emitted at 45 degrees in the interaction of 400, 530, and 650 MeV/A neon beams incident on uranium. Charged particles were identified by time of flight and momentum, as determined in a magnetic spectrometer. Neutral particles were detected using a thick plastic scintillator, and their time of flight was measured between an entrance scintillator, triggered by a charged particle, and the neutron detector. The scatter plots and contour plots of neutron momentum vs. proton momentum appear to show a slight correlation ridge above an uncorrelated background. The projections of this plane on the n-p momentum difference axis are essentially flat, showing a one standard deviation enhancement for each of the three beams energies. At each beam energy, the calculated momentum correlation function for the neutron-proton pairs is enhanced near zero neutron-proton momentum difference by approximately one standard deviation over the expected value for no correlation. This enhancement is expected to occur as a consequence of the attractive final state interaction between the neutron and proton (i.e., virtual or "singlet" deuterons). The implications of these measurements are discussed. |
| NASA分類 | Aerospace Medicine |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/300373 |
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