Mass and Q{sub EC} value of {sup 26}Si

Journal Article · Sun Mar 15 04:00:00 EDT 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.79.032802· OSTI ID:21199604

Eronen, T; Elomaa, V -V; Hager, U; Hakala, J; Jokinen, A; Kankainen, A; Kessler, T; Moore, I D; Rahaman, S; Rissanen, J; Weber, C; Aeystoe, J ^[1]

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1. Department of Physics, University of Jyvaeskylae, P. O. Box 35 (YFL), FI-40014 (Finland)

The Q{sub EC} value of the superallowed {beta} emitter {sup 26}Si has been measured with the JYFLTRAP Penning trap facility to be 4840.85(10) keV which is ten times more precise than any previous measurement. This leaves only the branching ratio to be improved before the Ft value of {sup 26}Si can be used to test the conserved vector current hypothesis. As a consequence, the {sup 25}Al(p,{gamma}){sup 26}Si reaction Q-value (Q{sub p{gamma}}) was improved to be 5513.7(5) keV, limited now by the mass excess of {sup 25}Al. The new Q{sub p{gamma}} value changes the stellar production rate of {sup 26}Si in nova ignition temperatures by about 10%.

• OSTI ID: 21199604
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 79; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALUMINIUM 25 TARGET
BERYLLIUM 10
BERYLLIUM 5
BRANCHING RATIO
FT VALUE
GAMMA DECAY
HYPOTHESIS
MASS
MEV RANGE 01-10
PROTON REACTIONS
Q-VALUE
SILICON 26
TRAPS
VECTOR CURRENTS