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arXiv · 1701.01432

Towards an Experimental Determination of the Transition Strength Between the Ground States of $^{20}$F and $^{20}$Ne

Oliver S. Kirsebom·Joakim Cederkäll·David G. Jenkins·Pankaj Joshi·Rauno Julin·Anu Kankainen·Tibor Kibédi·Olof Tengblad·Wladyslaw H. Trzaska
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Abstract

Electron capture on $^{20}$Ne is thought to play a crucial role in the final evolution of electron-degenerate ONe stellar cores. Recent calculations suggest that the capture process is dominated by the second-forbidden transition between the ground states of $^{20}$Ne and $^{20}$F, making an experimental determination of this transition strength highly desirable. To accomplish this task we are refurbishing an intermediate-image magnetic spectrometer capable of focusing 7 MeV electrons, and designing a scintillator detector surrounded by an active cosmic-ray veto shield, which will serve as an energy-dispersive device at the focal plane.

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Oliver S. Kirsebom, Joakim Cederkäll, David G. Jenkins, Pankaj Joshi, Rauno Julin, Anu Kankainen, Tibor Kibédi, Olof Tengblad, Wladyslaw H. Trzaska. 2017-01-05. Towards an Experimental Determination of the Transition Strength Between the Ground States of $^{20}$F and $^{20}$Ne. https://doi.org/10.7566/jpscp.14.021008

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