Astrophysical rate of 15O(α,γ)19Ne via the (p, t) reaction in inverse kinematics -: art. no. 065808

被引：46
|
作者：
Davids, B
van den Berg, AM
Dendooven, P
Fleurot, F
Hunyadi, M
de Huu, MA
Siemssen, RH
Wilschut, HW
Wörtche, HJ
Hernanz, M
José, J
Rehm, KE
Wuosmaa, AH
Segel, RE
机构：
[1] Univ Groningen, Kernfys Versneller Inst, NL-9747 AA Groningen, Netherlands
[2] Inst Estudis Espacials Catalunya, E-08034 Barcelona, Spain
[3] Univ Politecn Cataluna, Dept Fis & Engn Nucl, E-08800 Barcelona, Spain
[4] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA
[5] Northwestern Univ, Dept Phys, Evanston, IL 60208 USA
来源：
PHYSICAL REVIEW C | 2003年 / 67卷 / 06期
关键词：
D O I：
10.1103/PhysRevC.67.065808
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：
A recoil coincidence technique has been applied to measure the alpha-decay branching ratios of near-threshold states in Ne-19. Populating these states using the (p,t) reaction in inverse kinematics, we detected the recoils and their decay products with 100% geometric efficiency using a magnetic spectrometer. Combining our branching ratio measurements with independent determinations of the radiative widths of these states, we calculate the astrophysical rate of O-15(alpha,gamma)Ne-19. Using this reaction rate, we perform hydrodynamic calculations of nova outbursts and conclude that no significant breakout from the hot CNO cycles into the rp process occurs in novae via O-15(alpha,gamma)Ne-19.
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页数：8
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