Study of astrophysically important resonant states in 30S using the 32S(p,t)30S reaction

被引：1
|
作者：
Setoodehnia, K. [1 ]
Chen, A. -A. [1 ]
Chen, J. [1 ]
Clark, J. -A. [2 ]
Deibel, C. [2 ]
Kahl, D. [1 ]
Lennard, W. -N. [3 ]
Parker, P. -D. [4 ]
Wrede, C. [5 ]
机构：
[1] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada
[2] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA
[3] Univ Western Ontario, Dept Phys & Astron, London, ON N6A 3K7, Canada
[4] Yale Univ, Wright Nucl Struct Lab, New Haven, CT 06520 USA
[5] Univ Washington, Dept Phys, Seattle, WA 98195 USA
来源：
NUCLEAR PHYSICS A | 2010年 / 834卷 / 1-4期
关键词：
D O I：
10.1016/j.nuclphysa.2009.12.041
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The 29P(p,γ)30S reaction plays an important role in understanding the Si isotopic abundances in presolar grains of nova origin, which in turn provide us with information on the nature of the probable white dwarf progenitor's core, as well as the peak temperatures achieved during nova outbursts. This rate at nova temperatures is determined by two low-lying 3+ and 2+ resonances above the proton threshold at 4399 keV in 30S. We have studied the 30S nuclear structure via the 32S(p,t)30S reaction at 5 laboratory angles between 9° to 62°. We have observed 14 states including two levels at 4692.7 ± 4.5 keV and 4813.8 ± 3.4 keV that are candidates for the 3+ and the previously "missing" 2+ state, respectively. © 2010 Elsevier B.V.
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页码：205C / 207C
页数：3
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