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

Journal Article · Sun Jun 01 04:00:00 EDT 1997 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.55.3149· OSTI ID:509113

de Oliveira, F; Coc, A; Aguer, P; Bogaert, G; Kiener, J; Lefebvre, A; Tatischeff, V; Thibaud, J ^[1]; Fortier, S; Maison, J M; Rosier, L; Rotbard, G; Vernotte, J ^[2]; Wilmes, S; Mohr, P; Koelle, V; Staudt, G ^[3]

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1. CSNSM, IN2P3-CNRS, 91405 Orsay Campus (France)
2. IPN, IN2P3-CNRS et Universite de Paris-Sud, 91406 Orsay Cedex (France)
3. Physikalisches Institut, Universitaet Tuebingen, Auf der Morgenstelle 14, D-72076 Tuebingen (Germany)

A disagreement between two determinations of {Gamma}{sub {alpha}} of the astrophysically relevant level at E{sub x}=4.378 MeV in {sup 19}F has been stated in two recent papers by Wilmes {ital et al.} and de Oliveira {ital et al.} In this work the uncertainties of both papers are discussed in detail, and we adopt the value {Gamma}{sub {alpha}} = (1.5{sub {minus}0.8}{sup +1.5}){times}10{sup {minus}9} eV for the 4.378 MeV state. In addition, the validity and the uncertainties of the usual approximations for mirror nuclei {Gamma}{sub {gamma}}({sup 19}F){approx}{Gamma}{sub {gamma}}({sup 19}Ne), {theta}{sub {alpha}}{sup 2}({sup 19}F){approx}{theta}{sub {alpha}}{sup 2}({sup 19}Ne) are discussed, together with the resulting uncertainties on the resonance strengths in {sup 19}Ne and on the {sup 15}O({alpha},{gamma}){sup 19}Ne rate. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 509113
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 6 Vol. 55; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ALPHA REACTIONS
ENERGY LEVELS
FLUORINE 19
MIRROR NUCLEI
NEON 19
NITROGEN 15 TARGET
OXYGEN 15 TARGET
PHOTONS
RESONANCE