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One-neutron pickup into Ca49: Bound neutron g9/2 spectroscopic strength at N=29

Gade, A, Tostevin, JA, Bader, V, Baugher, T, Bazin, D, Berryman, JS, Brown, BA, Hartley, DJ, Lunderberg, E, Reccia, F , Stroberg, SR, Utsuno, Y, Weisshaar, D and Wimmer, K (2016) One-neutron pickup into Ca49: Bound neutron g9/2 spectroscopic strength at N=29 Physical Review C: Nuclear Physics, 93, 031601(R).

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Abstract

The highly selective, intermediate-energy heavy-ion-induced neutron-pickup reaction, in combination with γ-ray spectroscopy using the γ-ray energy-tracking in-beam nuclear array (GRETINA), is shown to provide reliable relative spectroscopic strengths for high-ℓ orbitals in nuclei more neutron rich than the projectile. The reaction mechanism gives a significant final-state-spin alignment that is validated through γ-ray angular-distribution measurements enabled by the position sensitivity of GRETINA. This is the first time that γ-ray angular distributions could be extracted from a high-luminosity, fast-beam reaction other than inelastic scattering. This holds great promise for the restriction and assignment of Jπ quantum numbers in exotic nuclei. We advance this approach to study the crucial N=28 shell closure and extract the ratio g9/2:f5/2 of bound neutron single-particle strengths in Ca49, a benchmark for emerging multi-shell ab initio and configuration-interaction theories that are applicable along the Ca isotopic chain.

Item Type: Article
Subjects : Physics
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Gade, A
Tostevin, JA
Bader, V
Baugher, T
Bazin, D
Berryman, JS
Brown, BA
Hartley, DJ
Lunderberg, E
Reccia, F
Stroberg, SR
Utsuno, Y
Weisshaar, D
Wimmer, K
Date : 14 March 2016
Identification Number : 10.1103/PhysRevC.93.031601
Copyright Disclaimer : ©2016 American Physical Society
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 22 Apr 2016 07:33
Last Modified : 31 Oct 2017 18:09
URI: http://epubs.surrey.ac.uk/id/eprint/810236

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