Towards an Experimental Determination of the Transition Strength Between the Ground States of 20F and 20Ne
Kirsebom, O. S., Cederkäll, J., Jenkins, D. G., Joshi, P., Julin, R., Kankainen, A., . . . Trzaska, W. (2017). Towards an Experimental Determination of the Transition Strength Between the Ground States of 20F and 20Ne. In NIC 2016 : Proceedings of the 14th International Symposium on Nuclei in the Cosmos (pp. 021008). JPS Conference Proceedings, 14. Physical Society of Japan. doi:10.7566/JPSCP.14.021008
Published inJPS Conference Proceedings;14
© the Authors, 2017. This is an open access article distributed under the terms of the Creative Commons License.
Electron capture on 20Ne 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 20Ne and 20F, 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.