Low-lying Proton Intruder State in 13B

S. Ota; S. Shimoura; H. Iwasaki; M. Kurokawa; S. Michimasa; N. Aoi; H. Baba; K. Demichi; Z. Elekes; T. Fukuchi; T. Gomi; S. Kanno; S. Kubono; K. Kurita; H. Hasegawa; E. Ideguchi; N. Iwasa; Y. U. Matsuyama; K. L. Yurkewicz; T. Minemura; T. Motobayashi; T. Murakami; M. Notani; A. Odahara; A. Saito; H. Sakurai; E. Takeshita; S. Takeuchi; M. Tamaki; T. Teranishi; Y. Yanagisawa; K. Yamada; M. Ishihara

doi:10.1016/j.physletb.2008.07.081

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arXiv · 0807.0478

Low-lying Proton Intruder State in 13B

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Abstract

The neturon rich nucleus 13B was studied via the proton transfer reaction 4He(12Be,13B γ) at 50AMeV. 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.

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S. Ota, S. Shimoura, H. Iwasaki, M. Kurokawa, S. Michimasa, N. Aoi, H. Baba, K. Demichi, Z. Elekes, T. Fukuchi, T. Gomi, S. Kanno, S. Kubono, K. Kurita, H. Hasegawa, E. Ideguchi, N. Iwasa, Y. U. Matsuyama, K. L. Yurkewicz, T. Minemura, T. Motobayashi, T. Murakami, M. Notani, A. Odahara, A. Saito, H. Sakurai, E. Takeshita, S. Takeuchi, M. Tamaki, T. Teranishi, Y. Yanagisawa, K. Yamada, M. Ishihara. 2008-07-03. Low-lying Proton Intruder State in 13B. https://doi.org/10.1016/j.physletb.2008.07.081

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