Abstract
We have studied the {beta}-delayed proton decay of {sup 20}Mg to search for the 2645 keV state in {sup 20}Na. This state is of astrophysical interest, because any proton capture through this state would dominate the stellar reaction rate of the reaction {sup 19}Ne({ital p},{gamma}){sup 20}Na. This reaction determines the break out from the hot CNO cycle. Several proton groups have been observed and their log{ital ft} values have been determined. No protons from the 2645 keV state were seen and a lower limit of log{ital ft}{ge}5.85 has been established. The impact of this result on the {sup 19}Ne({ital p},{gamma}) rate is discussed.
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