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New results near 100Sn: Observation of single-neutron states in 101Sn

Seweryniak, D, Carpenter, MP, Gros, S, Hecht, AA, Hoteling, N, Janssens, RVF, Khoo, TL, Lauritsen, T, Lister, CJ, Lotay, G, Peterson, D, Robinson, AP, Walters, WB, Wang, X, Woods, PJ and Zhu, S (2009) New results near 100Sn: Observation of single-neutron states in 101Sn Acta Physica Polonica B, 40 (3). pp. 621-627.

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Abstract

A search for in-beam γ-ray transitions in 101Sn, which contains only one neutron outside the 100Sn core, using a novel approach was carried out at the Argonne Tandem-Linac System. 101Sn nuclei were produced using the 46Ti(58Ni, 3n) 101Sn fusion-evaporation reaction. Beta-delayed protons with energies and decay times consistent with previous 101Sn decay studies were observed at the focal plane of the Fragment Mass Analyzer. In-beam γ rays were detected in the Gammasphere Ge-detector array and were correlated with the 101Sn β-delayed protons using the Recoil-Decay Tagging method. As a result, a γ-ray transition between the single-neutron vg7/2 and vd5/2 states situated at the Fermi surface was identified. The measured vg7/2-vd5/2 energy splitting was compared with predictions corresponding to various mean-field potentials and was used to calculate multi-neutron configurations in light Sn isotopes. Similar approach can be used to study core excitations in 101Sn and other exotic nuclei near 100Sn.

Item Type: Article
Authors :
NameEmailORCID
Seweryniak, DUNSPECIFIEDUNSPECIFIED
Carpenter, MPUNSPECIFIEDUNSPECIFIED
Gros, SUNSPECIFIEDUNSPECIFIED
Hecht, AAUNSPECIFIEDUNSPECIFIED
Hoteling, NUNSPECIFIEDUNSPECIFIED
Janssens, RVFUNSPECIFIEDUNSPECIFIED
Khoo, TLUNSPECIFIEDUNSPECIFIED
Lauritsen, TUNSPECIFIEDUNSPECIFIED
Lister, CJUNSPECIFIEDUNSPECIFIED
Lotay, Gg.lotay@surrey.ac.ukUNSPECIFIED
Peterson, DUNSPECIFIEDUNSPECIFIED
Robinson, APUNSPECIFIEDUNSPECIFIED
Walters, WBUNSPECIFIEDUNSPECIFIED
Wang, XUNSPECIFIEDUNSPECIFIED
Woods, PJUNSPECIFIEDUNSPECIFIED
Zhu, SUNSPECIFIEDUNSPECIFIED
Date : 1 March 2009
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:40
Last Modified : 17 May 2017 15:12
URI: http://epubs.surrey.ac.uk/id/eprint/840063

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