Authors: T Ohtsubo H Hirano S Takahashi K Matsuta M Mihara M Fukuda T Nagatomo T Izumikawa S Momota D Nishimura J Komurasaki D Ishikawa D M Zhou Y N Zheng S Y Zhu A Kitagawa M Kanazawa M Torikoshi S Sato T Minamisono Y Nojiri R Matsumiya T Sumikama K Tanaka K Yamada A Ozawa T Suzuki T Yamaguchi S Nakajima K Yoshida Y Nakashima H Fujiwara S Kumashiro M Ota D Shinojima H Tanaka T Yasuno K Muranaka T Maemura A Chiba S A Pahlovy M Nagao R Watanabe T Kubo I Tanihata M Takechi K Minamisono J R Alonso G F Krebs T J M Symons
Publish Date: 2008/08/15
Volume: 180, Issue: 1-3, Pages: 85-89
Abstract
We measured the polarization of the upbeta emitting 23Ne I π = 5/2 + T 1/2 = 3724 s and 25AlI π = 5/2 + T 1/2 = 718 s produced through the one nucleon pickup reactions and 24mAlI π = 1 + T 1/2 = 131 ms E ex = 426 keV and 28PI π = 3 + T 1/2 = 270 ms produced through chargeexchange reactions in the intermediate energy heavy ion collisions We compared them with those from the projectile fragmentation process The larger polarization seems to persistently be positive throughout the momentum distribution and sharper momentum distributions suggest that nuclear friction mechanism is responsible for the polarization phenomena
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