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Coulomb excitation of Ca-44 and Ar-46

Calinescu, S, Caceres, L, Grevy, S, Sorlin, O, Dombradi, Z, Stanoiu, M, Astabatyan, R, Borcea, C, Borcea, R, Bowry, M , Catford, Wilton, Clement, E, Franchoo, S, Garcia, R, Gillibert, R, Guerin, IH, Kuti, I, Lukyanov, S, Lepailleur, A, Maslov, V, Morfouace, P, Mrazek, J, Negoita, F, Niikura, M, Perrot, L, Podolyak, Zsolt, Petrone, C, Penionzhkevich, Y, Roger, T, Rotaru, F, Sohler, D, Stefan, I, Thomas, JC, Vajta, Z and Wilson, E (2016) Coulomb excitation of Ca-44 and Ar-46 PHYSICAL REVIEW C, 93 (4), ARTN 04433.

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Abstract

The reduced transition probabilities B(E2; 0+ g.s. → 2+ 1 ) of the 46Ar and 44Ca nuclei were studied using the Coulomb excitation technique at intermediate energy at the LISE/GANIL facility. The in-flight γ rays, emitted after the Coulomb excitation of their first 2+ states, were detected in an array of 64 BaF2 crystals. The present B(E2 ↑) value for 44Ca, 475(36) e2fm4 , agrees well with the value of 495(35) e2fm4 obtained by averaging results of previous experiments. Consistent B(E2; 0+ g.s. → 2+ 1 ) values of 225(29) e2fm4 and 234(19) e2fm4 have been obtained for 46Ar from an absolute and a relative measurement, normalized to the 44Ca value. Both results agree with the ones obtained with the same experimental technique at the NSCL facility but are a factor of 2 smaller than the shell model predictions. The drop in B(E2; 0+ g.s. → 2+ 1 ) in the Ar chain at N = 28, confirmed in this experiment, shows that 46Ar is sensitive to the N = 28 shell closure.

Item Type: Article
Subjects : Physics
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Calinescu, SUNSPECIFIEDUNSPECIFIED
Caceres, LUNSPECIFIEDUNSPECIFIED
Grevy, SUNSPECIFIEDUNSPECIFIED
Sorlin, OUNSPECIFIEDUNSPECIFIED
Dombradi, ZUNSPECIFIEDUNSPECIFIED
Stanoiu, MUNSPECIFIEDUNSPECIFIED
Astabatyan, RUNSPECIFIEDUNSPECIFIED
Borcea, CUNSPECIFIEDUNSPECIFIED
Borcea, RUNSPECIFIEDUNSPECIFIED
Bowry, MUNSPECIFIEDUNSPECIFIED
Catford, WiltonW.Catford@surrey.ac.ukUNSPECIFIED
Clement, EUNSPECIFIEDUNSPECIFIED
Franchoo, SUNSPECIFIEDUNSPECIFIED
Garcia, RUNSPECIFIEDUNSPECIFIED
Gillibert, RUNSPECIFIEDUNSPECIFIED
Guerin, IHUNSPECIFIEDUNSPECIFIED
Kuti, IUNSPECIFIEDUNSPECIFIED
Lukyanov, SUNSPECIFIEDUNSPECIFIED
Lepailleur, AUNSPECIFIEDUNSPECIFIED
Maslov, VUNSPECIFIEDUNSPECIFIED
Morfouace, PUNSPECIFIEDUNSPECIFIED
Mrazek, JUNSPECIFIEDUNSPECIFIED
Negoita, FUNSPECIFIEDUNSPECIFIED
Niikura, MUNSPECIFIEDUNSPECIFIED
Perrot, LUNSPECIFIEDUNSPECIFIED
Podolyak, ZsoltZ.Podolyak@surrey.ac.ukUNSPECIFIED
Petrone, CUNSPECIFIEDUNSPECIFIED
Penionzhkevich, YUNSPECIFIEDUNSPECIFIED
Roger, TUNSPECIFIEDUNSPECIFIED
Rotaru, FUNSPECIFIEDUNSPECIFIED
Sohler, DUNSPECIFIEDUNSPECIFIED
Stefan, IUNSPECIFIEDUNSPECIFIED
Thomas, JCUNSPECIFIEDUNSPECIFIED
Vajta, ZUNSPECIFIEDUNSPECIFIED
Wilson, EUNSPECIFIEDUNSPECIFIED
Date : 25 April 2016
Identification Number : 10.1103/PhysRevC.93.044333
Copyright Disclaimer : ©2016 American Physical Society
Uncontrolled Keywords : Science & Technology, Physical Sciences, Physics, Nuclear, Physics, NEUTRON-RICH NUCLEI, LOW-LYING STATES, SCATTERING, N=28, INTERMEDIATE, TRANSITIONS, EVOLUTION, ENERGIES, ISOTOPES, RATES
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 05 Apr 2017 07:45
Last Modified : 31 Oct 2017 19:18
URI: http://epubs.surrey.ac.uk/id/eprint/813943

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