Extrapolation of alpha+ carbon reaction cross sections to astrophysical energies

被引：51

作者：

Hale, GM

机构：

[1] Theoretical Division, Los Alamos National Laboratory, Los Alamos

来源：

NUCLEAR PHYSICS A | 1997年 / 621卷 / 1-2期

关键词：

D O I：

10.1016/S0375-9474(97)00234-0

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：

R-matrix extrapolations that take into account the effects of subthreshold levels are reported for the α+12,13C reaction cross sections. The relatively low extrapolated value SE1(300 keV) = 20 keV-b for α+12C capture seems compatible with measurements of the β-delayed α-decay spectrum of 16N, while the extrapolated 13C(α, n)16O S-factor is found to be nearly two orders of magnitude larger than the Caughlan-Fowler value.

引用

页码：C177 / C180

页数：4

共 14 条

[1] CONSTRAINTS ON THE LOW-ENERGY E1 CROSS-SECTION OF C-12(ALPHA,GAMMA-O-16 FROM THE BETA-DELAYED ALPHA-SPECTRUM OF N-16 [J].

AZUMA, RE ;

BUCHMANN, L ;

BARKER, FC ;

BARNES, CA ;

DAURIA, JM ;

DOMBSKY, M ;

GIESEN, U ;

JACKSON, KP ;

KING, JD ;

KORTELING, RG ;

MCNEELY, P ;

POWELL, J ;

ROY, G ;

VINCENT, J ;

WANG, TR ;

WONG, SSM ;

WREAN, PR .

PHYSICAL REVIEW C, 1994, 50 (02) :1194-1215

[2] TOTAL NEUTRON YIELD FROM REACTIONS C-13(ALPHA,N) 0-16 AND O-17,18(ALPHA,N)NE-20,21 [J].

BAIR, JK ;

HAAS, FX .

PHYSICAL REVIEW C, 1973, 7 (04) :1356-1364

[3] LOW-ENERGY RESONANCES IN C-13(ALPHA,N) [J].

BRUNE, CR ;

LICOT, I ;

KAVANAGH, RW .

PHYSICAL REVIEW C, 1993, 48 (06) :3119-3121

[4] REACTION-RATES OF THE S-PROCESS NEUTRON SOURCES NE-22(ALPHA,N)MG-25 AND C-13(ALPHA,N)O-16(1) [J].

DROTLEFF, HW ;

DENKER, A ;

KNEE, H ;

SOINE, M ;

WOLF, G ;

HAMMER, JW ;

GRIEFE, U ;

ROLFS, C ;

TRAUTVETTER, HP .

ASTROPHYSICAL JOURNAL, 1993, 414 (02) :735-739

[5] C-12(ALPHA,GAMMA O-16) REACTION AND STELLAR HELIUM BURNING [J].

DYER, P ;

BARNES, CA .

NUCLEAR PHYSICS A, 1974, A233 (02) :495-520

[6]

EDEN RJ, 1964, PHYS REV B, V133, P1575

[7] POLE STRUCTURE OF THE J-PI=3/2+ RESONANCE IN HE-5 [J].

HALE, GM ;

BROWN, RE ;

JARMIE, N .

PHYSICAL REVIEW LETTERS, 1987, 59 (07) :763-766

[8] COINCIDENCE MEASUREMENT OF THE CA-12(ALPHA,GAMMA)O-16 CROSS-SECTION AT LOW ENERGIES [J].

KREMER, RM ;

BARNES, CA ;

CHANG, KH ;

EVANS, HC ;

FILIPPONE, BW ;

HAHN, KH ;

MITCHELL, LW .

PHYSICAL REVIEW LETTERS, 1988, 60 (15) :1475-1478

[9] C-12(ALPHA,GAMMA)O-16 CROSS-SECTIONS AT STELLAR ENERGIES [J].

OUELLET, JML ;

EVANS, HC ;

LEE, HW ;

LESLIE, JR ;

MACARTHUR, JD ;

MCLATCHIE, W ;

MAK, HB ;

SKENSVED, P ;

WHITTON, JL ;

ZHAO, X ;

ALEXANDER, TK .

PHYSICAL REVIEW LETTERS, 1992, 69 (13) :1896-1899

[10] THE SCATTERING OF ALPHA-PARTICLES FROM C-12 AND THE C-12(ALPHA,GAMMA)O-16 STELLAR REACTION-RATE [J].

PLAGA, R ;

BECKER, HW ;

REDDER, A ;

ROLFS, C ;

TRAUTVETTER, HP ;

LANGANKE, K .

NUCLEAR PHYSICS A, 1987, 465 (02) :291-316

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