University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Is the structure of 42Si understood?

Gade, A., Brown, B.A., Tostevin, J. A., Bazin, D., Bender, P. C., Campbell, C.M., Crawford, H. L., Elman, B., Kemper, K. W., Longfellow, B. , Lunderberg, E., Rhodes, D. and Weisshaar, D. (2019) Is the structure of 42Si understood? Physical Review Letters, 122 (22), 222501. 222501-1 - 222501-6.

[img]
Preview
Text
Is the structure of 42Si understood.pdf - Accepted version Manuscript

Download (253kB) | Preview

Abstract

A more detailed test of the implementation of nuclear forces that drive shell evolution in the pivotal nucleus 42Si – going beyond earlier comparisons of excited-state energies – is important. The two leading shell-model effective interactions, SDPF-MU and SDPF-U-Si, both of which reproduce the low-lying 42Si(2+ 1) energy, but whose predictions for other observables differ significantly, are interrogated by the population of states in neutron-rich 42Si with a one-proton removal reaction from 43P projectiles at 81 MeV/nucleon. The measured cross sections to the individual 42Si final states are compared to calculations that combine eikonal reaction dynamics with these shell-model nuclear structure overlaps. The differences in the two shell-model descriptions are examined and linked to predicted low-lying excited 0+ states and shape coexistence. Based on the present data, which are in better agreement with the SDPF-MU calculations, the state observed at 2150(13) keV in 42Si is proposed to be the (0+ 2) level.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Gade, A.
Brown, B.A.
Tostevin, J. A.J.Tostevin@surrey.ac.uk
Bazin, D.
Bender, P. C.
Campbell, C.M.
Crawford, H. L.
Elman, B.
Kemper, K. W.
Longfellow, B.
Lunderberg, E.
Rhodes, D.
Weisshaar, D.
Date : 7 June 2019
Funders : Science and Technology Facilities Council (STFC)
DOI : 10.1103/PhysRevLett.122.222501
Copyright Disclaimer : © 2019 American Physical Society
Related URLs :
Depositing User : Clive Harris
Date Deposited : 20 May 2019 13:14
Last Modified : 11 Jun 2019 08:01
URI: http://epubs.surrey.ac.uk/id/eprint/851867

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800