ENERGY DEPENDENCE OF ANGULAR DISTRIBUTIONS IN THE NON-ANALOG PION DOUBLE CHARGE EXCHANGE REACTION

ENERGY DEPENDENCE OF ANGULAR DISTRIBUTIONS IN THE NON-ANALOG PION DOUBLE CHARGE EXCHANGE REACTION

<正> In pion double charge exchange （DCX）, the existence of large non-analog cross section for （π+, π-） reaction on T=0 nuclei is a noticeable phenomenon. At 164 MeV, the cross section for 16O （T=0） is nearly as large as that for 18O （T=1）. For instance, the ratio σ(18O)/σ(16O) is 3: 1...

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Veröffentlicht in:科学通报：英文版 1987 (1), p.12-14
1. Verfasser: 马维兴 王思问 张高友 陈崇光 赵叔平
Format: Artikel
Sprache:eng
Schlagworte:
instance
analog
noticeable
nuclei
anomalous
overlapping
absolute
expectation
angular
delta
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Zusammenfassung:<正> In pion double charge exchange （DCX）, the existence of large non-analog cross section for （π+, π-） reaction on T=0 nuclei is a noticeable phenomenon. At 164 MeV, the cross section for 16O （T=0） is nearly as large as that for 18O （T=1）. For instance, the ratio σ(18O)/σ(16O) is 3: 1 at 164 MeV, but at 292 MeV, it rapidly becomes 20:1. That means the ratios are strongly energy-dependent. The anomalous features observed in the 16O
ISSN:2095-9273