Momentum distribution of 15B fragments from the breakup of 17B |
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| Authors: | Suzuki T Ogawa Y Chiba M Fukuda M Iwasa N Izumikawa T Kanungo R Kawamura Y Ozawa A Suda T Tanihata I Watanabe S Yamaguchi T Yamaguchi Y |
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| Affiliation: | Department of Physics, Niigata University, Niigata 950-2181, Japan. |
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| Abstract: | The two-neutron removal cross section (sigma(-2n)) and the longitudinal momentum distribution of 15B fragments from the breakup of 17B on 9Be were measured at 70A MeV. The distribution in the projectile rest frame is characterized by a FWHM of 80+/-10 MeV/c for 15B. The sigma(-2n) is found to be 0.22+/-0.05 b. A Glauber-type analysis of the data provides clear evidence of a two-neutron halo structure in 17B. |
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