Density distribution of $^{17}\mathrm{B}$ from a reaction cross-section measurement

Density distribution of ${}^{17}B$ from a reaction cross-section measurement

Y. Yamaguchi, C. Wu, T. Suzuki, A. Ozawa, D. Q. Fang, M. Fukuda, N. Iwasa, T. Izumikawa, H. Jeppesen, R. Kanungo, R. Koyama, T. Ohnishi, T. Ohtsubo, W. Shinozaki, T. Suda, M. Takahashi, and I. Tanihata

Phys. Rev. C 70, 054320 – Published 24 November 2004

Abstract

The reaction cross section $(σ_{R})$ for the neutron-rich nucleus ${}^{17}B$ on a carbon target has been measured at an energy of $77 A MeV$ by the transmission method. An enhancement of $σ_{R}$ at intermediate energy compared to that at high energy was observed. The density distribution of ${}^{17}B$ was deduced through the energy dependence of $σ_{R}$ using a finite-range Glauber-type calculation under an optical-limit approximation as well as a few-body approach. The existence of a long neutron tail in ${}^{17}B$ was demonstrated. The fraction of the wave function with the valence two-neutron configuration of ${(2 s_{1 ∕ 2})}_{J = 0}^{2}$ or ${(1 d_{5 ∕ 2})}_{J = 0}^{2}$ was found to be $50 \pm 10 %$ based on a finite-range few-body Glauber-type calculation.

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Received 22 July 2004

DOI:https://doi.org/10.1103/PhysRevC.70.054320

Authors & Affiliations

Y. Yamaguchi^1,2,*, C. Wu^1,3, T. Suzuki^2,†, A. Ozawa^1,‡, D. Q. Fang^1,4, M. Fukuda⁵, N. Iwasa⁶, T. Izumikawa², H. Jeppesen^1,7, R. Kanungo¹, R. Koyama², T. Ohnishi¹, T. Ohtsubo², W. Shinozaki², T. Suda¹, M. Takahashi², and I. Tanihata^1,§

¹The Institute for Physical and Chemical Research (RIKEN), Saitama 351-0198, Japan
²Department of Physics, Niigata University, Niigata 950-2181, Japan
³School of Physics, Peking University, Beijing 100871, China
⁴Shanghai Institute of Nuclear Research, Chinese Academy of Sciences, Shanghai 201800, China
⁵Department of Physics, Osaka University, Osaka 560-0043, Japan
⁶Department of Physics, Tohoku University, Miyagi 980-8578, Japan
⁷Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C, Denmark

^*Present address: Center for Nuclear Study (CNS), University of Tokyo RIKEN campus, Saitama 351-0198, Japan.
^†Present address: Department of Physics, Saitama University, Saitama 338-8570, Japan.
^‡Present address: Institute of Physics, University of Tsukuba, Ibaraki 305-8571, Japan.
^§Present address: Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.

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Vol. 70, Iss. 5 — November 2004

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Physical Review C

covering nuclear physics

Density distribution of ${}^{17}B$ from a reaction cross-section measurement

Y. Yamaguchi, C. Wu, T. Suzuki, A. Ozawa, D. Q. Fang, M. Fukuda, N. Iwasa, T. Izumikawa, H. Jeppesen, R. Kanungo, R. Koyama, T. Ohnishi, T. Ohtsubo, W. Shinozaki, T. Suda, M. Takahashi, and I. Tanihata

Phys. Rev. C 70, 054320 – Published 24 November 2004

Abstract

Authors & Affiliations

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Physical Review C

covering nuclear physics

Density distribution of B17 from a reaction cross-section measurement

Y. Yamaguchi, C. Wu, T. Suzuki, A. Ozawa, D. Q. Fang, M. Fukuda, N. Iwasa, T. Izumikawa, H. Jeppesen, R. Kanungo, R. Koyama, T. Ohnishi, T. Ohtsubo, W. Shinozaki, T. Suda, M. Takahashi, and I. Tanihata

Phys. Rev. C 70, 054320 – Published 24 November 2004

Abstract

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Density distribution of ${}^{17}B$ from a reaction cross-section measurement