FIRST EXPERIMENTAL LIMIT ON THE NE-19(P,GAMMA)NA-20 RESONANCE STRENGTH, OF ASTROPHYSICAL INTEREST

被引：50
|
作者：
PAGE, RD
VANCRAEYNEST, G
SHOTTER, AC
HUYSE, M
BAIN, CR
BINON, F
COSZACH, R
DAVINSON, T
DECROCK, P
DELBAR, T
DUHAMEL, P
GAELENS, M
GALSTER, W
LELEUX, P
LICOT, I
LIENARD, E
LIPNIK, P
MICHOTTE, C
NINANE, A
SELLIN, PJ
SUKOSD, C
VANDUPPEN, P
VANHORENBEECK, J
VERVIER, J
WIESCHER, M
WOODS, PJ
机构：
[1] KATHOLIEKE UNIV LEUVEN, INST KERN & STRALINGSFYS, B-3001 LOUVAIN, BELGIUM
[2] FREE UNIV BRUSSELS, INST ASTRON ASTROPHYS & GEOPHYS, B-1050 BRUSSELS, BELGIUM
[3] UNIV CATHOLIQUE LOUVAIN, INST NUCL PHYS, B-1348 LOUVAIN, BELGIUM
[4] TECH UNIV BUDAPEST, INST NUCL TECH, H-1521 BUDAPEST, HUNGARY
[5] UNIV NOTRE DAME, DEPT PHYS, NOTRE DAME, IN 46556 USA
来源：
PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 23期
关键词：
D O I：
10.1103/PhysRevLett.73.3066
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The Ne19(p,γ)Na20 reaction may influence considerably the reaction flow between the CNO and NeNa mass regions in high temperature hydrogen burning conditions. The 447 keV resonance has been studied by exploiting radioactive Ne19 beams with novel detection techniques to measure β+ -delayed α radioactivity of Na20 nuclei produced in reactions with polyethylene targets. A 90% C.L. upper limit of 18 meV for the resonance strength has been determined and implications for the spin assignment of the 2.646 MeV state in Na20 and the stellar reaction rate are discussed. © 1994 The American Physical Society.
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收藏
页码：3066 / 3069
页数：4
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