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Measurements of interaction cross sections and radii of He isotopes |
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| Authors: | I. Tanihata H. Hamagaki O. Hashimoto S. Nagamiya Y. Shida N. Yoshikawa |
| Affiliation: | Institute for Nuclear Study, University of Tokyo, 3-2-1 Midori-cho, Tanashi, Tokyo 188, Japan Department of Physics, Faculty of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464, Japan Nuclear Science Division, Lawrence Berkeley Laboratory, University of California, Berkeley, CA 94720, USA Laboratory of Nuclear Studies, Faculty of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560, Japan |
| Abstract: | Secondary beams of 3He, 4He, 6He, and 8He were produced through the projectile fragmentation of an 800 MeV/nucleon 11B primary beam. Interaction cross sections (σI) of all He isotopes of 790 MeV/nucleon on Be, C, and Al targets were measured by a transmission-type experiment. The interaction nuclear radii of He isotopes RI(He) = (σI/π)1/2 − R I(T) where RI(T) is the radius of the target nucleus, have been deduced to be RI(3He) = 1.59 ± 0.06 fm, RI(4He) = 1.40 ± 0.05 fm, RI(6He) = 2.21 ± 0.06 fm, and RI(8He) = 2.52 ± 0.06 fm. |
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