Resonant elastic scattering of a radioactive 20 Na beam incident upon protons in a polyethylene target has been used to probe the level structure of 21 Mg above the proton decay threshold. Three states have been observed and their properties deduced through analysis based on the R-Matrix formalism. The results improve and extend previous studies of this nucleus. An estimate of the 20 Na(p,γ)21 Mg reaction rate, including these new data, suggests this reaction will not play a significant role in explosive hydrogen burning in astrophysical sites such as novae and X-ray bursts.
|Title of host publication||Proceedings of the International Symposium on Nuclear Astrophysics - Nuclei in the Cosmos - IX. 25-30 June 2006|
|Publication status||Published - 2006|