Comparison of low-energy resonances in N-15(alpha,gamma)F-19 and O-15(alpha,gamma)Ne-19 and related uncertainties

被引：33

作者：

deOliveira, F

Coc, A

Aguer, P

Bogaert, G

Kiener, J

Lefebvre, A

Tatischeff, V

Thibaud, JP

Fortier, S

Maison, JM

Rosier, L

Rotbard, G

Vernotte, J

Wilmes, S

Mohr, P

Kolle, V

Staudt, G

机构：

[1] CTR SPECTROMETRIE NUCL & SPECTROMETRIE MASSE, IN2P3, CNRS, F-91405 ORSAY, FRANCE

[2] INST PHYS NUCL, IN2P3, CNRS, F-91406 ORSAY, FRANCE

[3] UNIV PARIS 11, F-91406 ORSAY, FRANCE

[4] UNIV TUBINGEN, INST PHYS, D-72076 TUBINGEN, GERMANY

来源：

PHYSICAL REVIEW C | 1997年 / 55卷 / 06期

关键词：

D O I：

10.1103/PhysRevC.55.3149

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 disagreement between two determinations of Gamma(a) of the astrophysically relevant level at E-x = 4.378 MeV in F-19 has been stated in two recent papers by Wilmes et al. and de Oliveira et al. In this work the uncertainties of both papers are discussed in detail, and we adopt the value Gamma(a) = (1.5(-0.8)(+1.5)) x 10(-9) eV for the 4.378 MeV state. In addition, the validity and the uncertainties of the usual approximations for mirror nuclei Gamma(gamma)(F-19)approximate to Gamma(gamma)(Ne-19), theta(alpha)(2)(F-19)approximate to theta(alpha)(2)(Ne-19) are discussed, together with the resulting uncertainties on the resonance strengths in Ne-19 and on the O-15(alpha, gamma)Ne-19 rate.

引用

页码：3149 / 3151

页数：3

共 22 条

[11] DWBA TREATMENT OF CLUSTER TRANSFER-REACTIONS [J].

KUBO, KI ;

HIRATA, M .

NUCLEAR PHYSICS A, 1972, A187 (01) :186-&

[12] MEASUREMENT OF THE N-15(ALPHA,GAMMA)F-19 RESONANCES AT ECM=536KEV AND 542KEV [J].

MAGNUS, PV ;

SMITH, MS ;

PARKER, PD ;

AZUMA, RE ;

CAMPBELL, C ;

KING, JD ;

VISE, J .

NUCLEAR PHYSICS A, 1987, 470 (01) :206-212

[13] MEASUREMENT OF O-15 (ALPHA, GAMMA) NE-19 RESONANCE STRENGTHS [J].

MAGNUS, PV ;

SMITH, MS ;

HOWARD, AJ ;

PARKER, PD ;

CHAMPAGNE, AE .

NUCLEAR PHYSICS A, 1990, 506 (02) :332-345

[14]

Mowlavi N, 1996, ASTRON ASTROPHYS, V311, P803

[15] ALPHA-PARTICLE DECAY WIDTHS OF LEVELS IN F-19 [J].

PRINGLE, DM ;

VERMEER, WJ .

NUCLEAR PHYSICS A, 1989, 499 (01) :117-130

[16] LIFETIMES IN N-15 FROM GAMMA-RAY LINE-SHAPES PRODUCED IN THE H-2(N-14,P-GAMMA) AND N-14(THERMAL N,GAMMA) REACTIONS [J].

RAMAN, S ;

JURNEY, ET ;

STARNER, JW ;

KURONEN, A ;

KEINONEN, J ;

NORDLUND, K ;

MILLENER, DJ .

PHYSICAL REVIEW C, 1994, 50 (02) :682-697

[17] ENERGY-LEVELS OF LIGHT-NUCLEI A=18-19 [J].

TILLEY, DR ;

WELLER, HR ;

CHEVES, CM ;

CHASTELER, RM .

NUCLEAR PHYSICS A, 1995, 595 (01) :1-170

[18]

Warburton E.K., 1969, Isospin in Nuclear Physics, P185

[19] NUCLEAR AND ASTROPHYSICAL ASPECTS OF O-18(P,GAMMA)F-19 [J].

WIESCHER, M ;

BECKER, HW ;

GORRES, J ;

KETTNER, KU ;

TRAUTVETTER, HP ;

KIESER, WE ;

ROLFS, C ;

AZUMA, RE ;

JACKSON, KP ;

HAMMER, JW .

NUCLEAR PHYSICS A, 1980, 349 (1-2) :165-216

[20] Low energy resonances in N-15(alpha,gamma)F-19 and O-15(alpha,gamma)Ne-19 [J].

Wilmes, S ;

Mohr, P ;

Atzrott, U ;

Kolle, V ;

Staudt, G ;

Mayer, A ;

Hammer, JW .

PHYSICAL REVIEW C, 1995, 52 (06) :R2823-R2826

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