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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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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 :
Calinescu, S
Caceres, L
Grevy, S
Sorlin, O
Dombradi, Z
Stanoiu, M
Astabatyan, R
Borcea, C
Borcea, R
Bowry, M
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
Petrone, C
Penionzhkevich, Y
Roger, T
Rotaru, F
Sohler, D
Stefan, I
Thomas, JC
Vajta, Z
Wilson, E
Date : 25 April 2016
DOI : 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 : 16 Jan 2019 17:13

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