Astrophysical reaction rate of 12C(α, γ)16O

被引：249

作者：

Kunz, R ^{[1
]}

Fey, M

Jaeger, M

Mayer, A

Hammer, JW

Staudt, G

Harissopulos, S

Paradellis, T

机构：

[1] Univ Stuttgart, Inst Strahlenphys, D-70550 Stuttgart, Germany

[2] Univ Tubingen, Inst Phys, D-72076 Tubingen, Germany

[3] Natl Ctr Sci Res Demokritos, Inst Nucl Phys, GR-15310 Athens, Greece

来源：

ASTROPHYSICAL JOURNAL | 2002年 / 567卷 / 01期

关键词：

Galaxy : abundances; nuclear reactions; nucleosynthesis; abundances stars : abundances; stars : evolution; supernovae : general;

D O I：

10.1086/338384

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A new astrophysical reaction rate of C-12(alpha, gamma)O-16 has been calculated based on our recent determination of the E1- and E2-capture cross sections. The R-matrix method has been applied to describe the S-E1- and S-E2-factor functions as well as the data of elastic alpha scattering and the beta-delayed alpha decay of N-16 from other experiments. The resulting reaction rate for stellar temperatures of T-9 = 0.04-10 is presented in both tabular form and an analytic expression. A new temperature dependence of the reaction rate was obtained when compared with reported evaluations. The associated uncertainties were reduced considerably in comparison to previous determinations.

引用

页码：643 / 650

页数：8

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