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Mirrored one-nucleon knockout reactions to the Tz=±32 A=53 mirror nuclei

Milne, SA, Bentley, MA, Simpson, EC, Dodsworth, P, Baugher, T, Bazin, D, Berryman, JS, Bruce, AM, Davies, PJ, Aa. Diget, C, Gade, A, Henry, TW, Iwasaki, H, Lemasson, A, Lenzi, SM, McDaniel, S, Napoli, DR, Nichols, AJ, Ratkiewicz, A, Scruton, L, Stroberg, SR, Tostevin, JA, Weisshaar, D, Wimmer, K and Winkler, R (2016) Mirrored one-nucleon knockout reactions to the Tz=±32 A=53 mirror nuclei Physical Review C: Nuclear Physics, 93 (2), 024318.

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Abstract

Background: The study of excited states in mirror nuclei allows us to extract information on charge-dependent (i.e., isospin-nonconserving) interactions in nuclei. Purpose: To extend previous studies of mirror nuclei in the f7/2 region, investigating charge symmetry breaking of the strong nuclear force. Methods: γ-ray spectroscopy has been performed for the mirror (Tz= ±3/2) pair 53Ni and 53Mn, produced via mirrored one-nucleon knockout reactions. Results: Several new transitions have been identified in 53Ni from which a new level scheme has been constructed. Cross sections for knockout have been analyzed and compared with reaction model calculations where evidence is found for knockout from high-spin isomeric states. Mirror energy differences between isobaric analog states have been computed, compared to large scale shell-model calculations, and interpreted in terms of isospin-nonconserving effects. In addition, lifetimes for the long-lived J π = 5 /2 − 1 analog states in both 53Mn and 53Ni have been extracted through lineshape analysis, giving half-lives of t1/2 = 120 (14) ps and t1/2 = 198 (12) ps,respectively. Conclusions: The inclusion of a set of isovector isospin-nonconserving matrix elements to the shell-model calculations gave the best agreement with the experimental data.

Item Type: Article
Subjects : subj_Physics
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
AuthorsEmailORCID
Milne, SAUNSPECIFIEDUNSPECIFIED
Bentley, MAUNSPECIFIEDUNSPECIFIED
Simpson, ECUNSPECIFIEDUNSPECIFIED
Dodsworth, PUNSPECIFIEDUNSPECIFIED
Baugher, TUNSPECIFIEDUNSPECIFIED
Bazin, DUNSPECIFIEDUNSPECIFIED
Berryman, JSUNSPECIFIEDUNSPECIFIED
Bruce, AMUNSPECIFIEDUNSPECIFIED
Davies, PJUNSPECIFIEDUNSPECIFIED
Aa. Diget, CUNSPECIFIEDUNSPECIFIED
Gade, AUNSPECIFIEDUNSPECIFIED
Henry, TWUNSPECIFIEDUNSPECIFIED
Iwasaki, HUNSPECIFIEDUNSPECIFIED
Lemasson, AUNSPECIFIEDUNSPECIFIED
Lenzi, SMUNSPECIFIEDUNSPECIFIED
McDaniel, SUNSPECIFIEDUNSPECIFIED
Napoli, DRUNSPECIFIEDUNSPECIFIED
Nichols, AJUNSPECIFIEDUNSPECIFIED
Ratkiewicz, AUNSPECIFIEDUNSPECIFIED
Scruton, LUNSPECIFIEDUNSPECIFIED
Stroberg, SRUNSPECIFIEDUNSPECIFIED
Tostevin, JAUNSPECIFIEDUNSPECIFIED
Weisshaar, DUNSPECIFIEDUNSPECIFIED
Wimmer, KUNSPECIFIEDUNSPECIFIED
Winkler, RUNSPECIFIEDUNSPECIFIED
Date : 24 February 2016
Identification Number : 10.1103/PhysRevC.93.024318
Copyright Disclaimer : ©2016 American Physical Society
Related URLs :
Additional Information : ©2016 American Physical Society
Depositing User : Symplectic Elements
Date Deposited : 09 Mar 2016 14:45
Last Modified : 09 Mar 2016 14:45
URI: http://epubs.surrey.ac.uk/id/eprint/810049

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