Proton unbound states in 21Mg and their astrophysical significance

Details Proton unbound states in 21Mg and their astrophysical significance Proton unbound states in 21Mg and their astrophysical significance

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aipc..681..227m&link_type=abstract

PROTON-EMITTING NUCLEI: Second International Symposium PROCON 2003. AIP Conference Proceedings, Volume 681, pp. 227-234 (2003).

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Elastic Scattering, Nucleosynthesis In Novae, Supernovae, And Other Explosive Environments, 20<=A<=38

Scientific paper

Recently, the world's first radioactive 20Na beams have been accelerated at the TRIUMF facility. Using the TRIUMF-UK Detector Array facility we have performed elastic scattering of this beam from protons in a CH2 target with the aim of determining resonance parameters of states in 21Mg. The region of excitation probed in 21Mg has astrophysical importance because resonant contributions to the 20Na(p,γ)21Mg reaction rate are thought to be part of the breakout path from the hot CNO cycle to the rp-process in x-ray bursters and perhaps novae. The data taken also serve a wider purpose in that comparisons may be made to isobaric analogue states in the mirror 21F nucleus, and thus a study of Coulomb energy shifts may be undertaken. An overview of the motivation, of the experiment, and a preliminary analysis of the data taken, is presented.

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