CROSS-SECTION AND ASTROPHYSICAL S-FACTOR FOR THE C-13(P,GAMMA)N-14 REACTION

被引：48

作者：

KING, JD ^{[1
]}

AZUMA, RE ^{[1
]}

VISE, JB ^{[1
]}

GORRES, J ^{[1
]}

ROLFS, C ^{[1
]}

TRAUTVETTER, HP ^{[1
]}

VLIEKS, AE ^{[1
]}

机构：

[1] UNIV MUNSTER,INST KERNPHYS,W-4400 MUNSTER,GERMANY

来源：

NUCLEAR PHYSICS A | 1994年 / 567卷 / 02期

基金：

加拿大自然科学与工程研究理事会;

关键词：

NUCLEAR REACTIONS; C-13(P; GAMMA); E-NUMBER-120-950; KEV; MEASURED GAMMA-RAY YIELD N-14 DEDUCED RESONANCE PARAMETERS; BRANCHING RATIOS; DIRECT CAPTURE CONTRIBUTIONS; SPECTROSCOPIC FACTORS FOR PROTON-BOUND STATES; CALCULATED ASTROPHYSICAL S-FACTOR; THERMONUCLEAR REACTION RATE;

D O I：

10.1016/0375-9474(94)90154-6

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：

We have studied the C-13(p, gamma)N-14 reaction in the energy range E(p) = 120-950 keV and obtained cross section curves for capture into the first six states of N-14. The 1(-), T = 1 state in N-14 was observed at laboratory energy E(R) = 557.6+/-0.5 keV (E(x) = 8068.1+/-0.5 keV) with width Gamma(R) = 40+/-1 keV, and the 2(-), T = 0 state at E(R) = 450.4+/-0.5 keV (E(x) = 7968.6+/-0.5 keV). Spectroscopic factors have been obtained from observation of direct capture to all states; they are in fair agreement with results from stripping reaction studies. The S-factor curve for the transition to the ground state is in excellent agreement with previous results; S-factor curves for the other transitions are reported for the first time. The total S-factor extrapolated to 25 keV is 7.7+/-1.0 keV.b, somewhat higher than previous values.

引用

页码：354 / 376

页数：23

共 40 条

[21] ELECTROMAGNETIC-TRANSITIONS IN C-14 AND N-14 [J].