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One- and two-neutron removal cross sections of 24O

Divaratne, D. A., Brune, C. R., Attanayake, H. N., Baumann, T., Bazin, D., Gade, A., Grimes, S. M.., King, P. M., Thoennessen, M. and Tostevin, J. A. (2018) One- and two-neutron removal cross sections of 24O Physical Review C, 98 (2), 024306. 024306-1 - 024306-8.

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Cross sections of one- and two-neutron removal reactions of 24O, leading to the 23O(½+) ground state and to bound final states of 22O, have been measured at the National Superconducting Cyclotron Laboratory. The experiment was conducted using the S800 spectrograph and a 24O beam energy of 92.3 MeV/u. The measured 23O ground state and 22O inclusive cross section values, of 74(11) mb and 146(33) mb, respectively, are in good agreement with calculations using eikonal reaction dynamics and shell-model nuclear structure overlaps. The widths at half maximum of the associated parallel momentum distributions of these cross sections, deduced from Gaussian fits, are 115(13) MeV/c for 23O and 309(36) MeV/c for 22O in the projectile rest frame. The data and calculations strongly support the shell-model description of 24O as a spherical, doubly-magic structure.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
Divaratne, D. A.
Brune, C. R.
Attanayake, H. N.
Baumann, T.
Bazin, D.
Gade, A.
Grimes, S. M..
King, P. M.
Thoennessen, M.
Tostevin, J.
Date : 13 August 2018
Funders : Science and Technology Facilities Council (STFC)
DOI : 10.1103/PhysRevC.98.024306
Copyright Disclaimer : © 2018 American Physical Society
Related URLs :
Depositing User : Clive Harris
Date Deposited : 26 Jul 2018 01:50
Last Modified : 11 Dec 2018 11:24

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