Beta-delayed particle decay of Ne

A.C. Morton, J.C. Chow, J.D. King, R.N. Boyd, N.P.T. Bateman, L. Buchmann, J.M. D'Auria, T. Davinson, M. Dombsky, W. Galster, E. Gete, U. Giesen, C. Iliadis, K.P. Jackson, J. Powell, G. Roy, A. Shotter

Research output: Contribution to journalArticlepeer-review

Abstract

The β-delayed particle decay of Ne has been studied via proton-γ coincidences, time-of-flight measurements and the "ratio-cut technique", allowing cleanly-separated proton and α-particle spectra to be obtained. A complete set of proton and α branching ratios for the decay of 14 excited states in F to the ground and excited states of O and N has been determined and branching ratios for the β decay of Ne to these states have been deduced. From the branching ratios, ft values and reduced Gamow-Teller matrix elements were calculated; no indication of isospin mixing in the isobaric analog state in F was observed. From the measurement of proton-γ angular correlations, combined with the selection rules for an allowed β decay, we obtain J = 1/2 for states at 8.436 and 9.450 MeV and 3/2 for the state at 10.030 MeV in F. Probabilities for the β-delayed pα decay to C through the tails of the subthreshold 7.117 and 6.917 MeV states in O have been calculated and the feasibility of using such decays to provide information about the rates for the E1 and E2 components of the C(α, γ)O reaction is discussed.
Original languageEnglish
Pages (from-to)15-47
Number of pages33
JournalNuclear Physics A
Volume706
Issue number1-2
DOIs
Publication statusPublished - 29 Jul 2002

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