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Title: Structure of {sup 10}Be from the {sup 12}C({sup 12}C,{sup 14}O){sup 10}Be reaction

Abstract

The {sup 12}C({sup 12}C,{sup 14}O) two-proton pick-up reaction has been measured at 211.4 MeV incident energy to study the structure of states of {sup 10}Be up to excitation energies of 12 MeV. The measured partial angular distributions show pronounced oscillatory shapes, which were described by coupled-reaction-channels calculations. Spin-parity assignments could be derived from these characteristic shapes and two definite assignments have been made. The state at 11.8 MeV has been identified as the 4{sup +} member of the ground-state band, and the state at 10.55 MeV is assigned J{sup {pi}}=3{sup -}. At 5.96 MeV only the 1{sub 1}{sup -} member of the known 2{sub 2}{sup +}/1{sub 1}{sup -} doublet is populated. The angular distribution of the peak at 9.50 MeV, which consists of several unresolved states, has been unfolded using contributions from known states at 9.56 MeV, 2{sup +}, and 9.27 MeV, 4{sup -}. The inclusion of a state at 9.4 MeV reported by Daito et al. from the {sup 10}B(t,{sup 3}He){sup 10}Be reaction and tentatively assigned (3{sup +}) improved the fit considerably. A K=2 band is formed with the 2{sub 2}{sup +} state as the band head and the (3{sup +}) state as the second member. The structures ofmore » the K{sup {pi}}=0{sup +}{sub 1},2{sup +}{sub 2}, and 1{sub 1}{sup -} bands are discussed.« less

Authors:
; ; ; ; ;  [1]
  1. Hahn-Meitner-Institut GmbH, Glienicker Str. 100, D-14109 Berlin (Germany)
Publication Date:
OSTI Identifier:
20995290
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 75; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevC.75.054604; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ALLOCATIONS; ANGULAR DISTRIBUTION; BERYLLIUM 10; BORON 10; CARBON 12; EXCITATION; GROUND STATES; HELIUM 3; MEV RANGE; OXYGEN 14; PICKUP REACTIONS; PROTONS; SPIN

Citation Formats

Bohlen, H. G., Dorsch, T., Kokalova, Tz., Oertzen, W. von, Schulz, Ch., and Wheldon, C. Structure of {sup 10}Be from the {sup 12}C({sup 12}C,{sup 14}O){sup 10}Be reaction. United States: N. p., 2007. Web. doi:10.1103/PHYSREVC.75.054604.
Bohlen, H. G., Dorsch, T., Kokalova, Tz., Oertzen, W. von, Schulz, Ch., & Wheldon, C. Structure of {sup 10}Be from the {sup 12}C({sup 12}C,{sup 14}O){sup 10}Be reaction. United States. doi:10.1103/PHYSREVC.75.054604.
Bohlen, H. G., Dorsch, T., Kokalova, Tz., Oertzen, W. von, Schulz, Ch., and Wheldon, C. Tue . "Structure of {sup 10}Be from the {sup 12}C({sup 12}C,{sup 14}O){sup 10}Be reaction". United States. doi:10.1103/PHYSREVC.75.054604.
@article{osti_20995290,
title = {Structure of {sup 10}Be from the {sup 12}C({sup 12}C,{sup 14}O){sup 10}Be reaction},
author = {Bohlen, H. G. and Dorsch, T. and Kokalova, Tz. and Oertzen, W. von and Schulz, Ch. and Wheldon, C.},
abstractNote = {The {sup 12}C({sup 12}C,{sup 14}O) two-proton pick-up reaction has been measured at 211.4 MeV incident energy to study the structure of states of {sup 10}Be up to excitation energies of 12 MeV. The measured partial angular distributions show pronounced oscillatory shapes, which were described by coupled-reaction-channels calculations. Spin-parity assignments could be derived from these characteristic shapes and two definite assignments have been made. The state at 11.8 MeV has been identified as the 4{sup +} member of the ground-state band, and the state at 10.55 MeV is assigned J{sup {pi}}=3{sup -}. At 5.96 MeV only the 1{sub 1}{sup -} member of the known 2{sub 2}{sup +}/1{sub 1}{sup -} doublet is populated. The angular distribution of the peak at 9.50 MeV, which consists of several unresolved states, has been unfolded using contributions from known states at 9.56 MeV, 2{sup +}, and 9.27 MeV, 4{sup -}. The inclusion of a state at 9.4 MeV reported by Daito et al. from the {sup 10}B(t,{sup 3}He){sup 10}Be reaction and tentatively assigned (3{sup +}) improved the fit considerably. A K=2 band is formed with the 2{sub 2}{sup +} state as the band head and the (3{sup +}) state as the second member. The structures of the K{sup {pi}}=0{sup +}{sub 1},2{sup +}{sub 2}, and 1{sub 1}{sup -} bands are discussed.},
doi = {10.1103/PHYSREVC.75.054604},
journal = {Physical Review. C, Nuclear Physics},
number = 5,
volume = 75,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}