Sub-Barrier Coulomb Excitation of {sup 110}Sn and Its Implications for the {sup 100}Sn Shell Closure

Journal Article · Fri Apr 27 04:00:00 EDT 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.98.172501· OSTI ID:20951273

Cederkaell, J ^[1]; Ekstroem, A; Fahlander, C ^[2]; Hurst, A M; Butler, P A ^[3]; Hjorth-Jensen, M ^[4]; Ames, F ^[5]; Banu, A ^[6]; Davinson, T ^[7]; Pramanik, U Datta ^[8]; Eberth, J; Reiter, P; Warr, N; Weisshaar, D ^[9]; Franchoo, S ^[10]; Georgiev, G; Koester, U ^[1]; Gorska, M; Kester, O ^[6]; Habs, D ^[11]

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1. PH Department, CERN 1211, Geneva 23 (Switzerland)
2. Physics Department, University of Lund (Sweden)
3. Oliver Lodge Laboratory, University of Liverpool (United Kingdom)
4. Physics Department and Center of Mathematics for Applications, University of Oslo (Norway)
5. TRIUMF, Vancouver (Canada)
6. Gesellschaft fuer Schwerionenforschung (GSI), Darmstadt (Germany)
7. Department of Physics and Astronomy, University of Edingburgh (United Kingdom)
8. Saha Institute of Nuclear Physics, Kolkata 700064 (India)
9. Institute of Nuclear Physics, University of Cologne (Germany)
10. IPN Orsay, Orsay (France)
11. Physics Department, Ludwig-Maximilian University, Munich (Germany)

The first excited 2{sup +} state of the unstable isotope {sup 110}Sn has been studied in safe Coulomb excitation at 2.82 MeV/u using the MINIBALL array at the REX-ISOLDE post accelerator at CERN. This is the first measurement of the reduced transition probability of this state using this method for a neutron deficient Sn isotope. The strength of the approach lies in the excellent peak-to-background ratio that is achieved. The extracted reduced transition probability, B(E2:0{sup +}{yields}2{sup +})=0.220{+-}0.022e{sup 2}b{sup 2}, strengthens the observation of the evolution of the B(E2) values of neutron deficient Sn isotopes that was observed recently in intermediate-energy Coulomb excitation of {sup 108}Sn. It implies that the trend of these reduced transition probabilities in the even-even Sn isotopes is not symmetric with respect to the midshell mass number A=116 as {sup 100}Sn is approached.

• OSTI ID: 20951273
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 17 Vol. 98; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CERN
COULOMB EXCITATION
NEUTRON-DEFICIENT ISOTOPES
PROBABILITY
SHELL MODELS
TIN 100
TIN 108
TIN 110