4.7 Article

Low-lying proton intruder state in 13B

Journal

PHYSICS LETTERS B
Volume 666, Issue 4, Pages 311-314

Publisher

ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2008.07.081

Keywords

intruder state; proton single particle state; proton transfer reaction; He-4(Be-12, B-13 gamma)

Funding

  1. Ministry of Education, Culture, Sports, Science and Technology of Japan [15204018]
  2. Grants-in-Aid for Scientific Research [15204018] Funding Source: KAKEN

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The neutron-rich nucleus B-13 was studied via the proton transfer reaction He-4(Be-12, B-13 gamma) at 50 AMeV. The known 4.83-MeV excited state was strongly populated and its spin and parity were assigned to 1/2(+) by comparing the angular differential cross section data with DWBA calculations. This low-lying 1/2(+) state is interpreted as a proton intruder state and indicates a deformation of the nucleus. (C) 2008 Elsevier B.V. All rights reserved.

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