Physics – Nuclear Physics
Scientific paper
Jun 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007phrvc..75f2801s&link_type=abstract
Physical Review C, vol. 75, Issue 6, id. 062801
Physics
Nuclear Physics
15
Gamma Transitions And Level Energies, 20<=A<=38, Radiative Capture, Nuclear Physics Aspects Of Novae, Supernovae, And Other Explosive Environments
Scientific paper
A study of the level structure of Si26 using in-beam γ-ray spectroscopy is presented. A full level scheme is derived incorporating all states lying below the proton threshold energy. The results are in good agreement with shell model predictions and one-to-one correspondence is found with states in the mirror nucleus Mg26. Additionally, a γ-decay branch is observed from a state at 5677.0(17) keV, which is assigned to a 1+ resonance important in the astrophysical reaction Al25(p,γ)Si26. The newly derived resonance energy, Er=159.2(35) keV, has the effect of decreasing the reaction rate at the novae ignition temperature of ≈0.1 GK by a factor of ≈2 when compared with the previous most precise measurement of this state.
Carpenter M. P.
Davinson T.
Janssens R. V. F.
Jenkins David G.
Lauritsen T.
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