Experimental Study of the t+t Structure in 6He

ZHANG Gao-Long; YE Yan-Lin; JIANG Dong-Xing; ZHENG Tao; LI Zhi-Huan; LI Xiang-Qing; WU Cui-E; CHEN Zhi-Qiang; HU Qing-Yuan; PANG Dan-Yang; WANG Jia

Chinese Physics C> 2005, Vol. 29> Issue(10) : 940-943

Experimental Study of the t+t Structure in 6He

1 School of Physics and the MOE Key Laboratory of Heavy Ion Physics,Peking University,Beijing 100871,China2 RIKEN,2-1 Hirosawa, Wako,Saitama 351-0198,Japan

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Abstract：
The triton fragments produced in the reaction of 25MeV/u ⁶He on ⁹Be target were detected by a set of telescopes. Energy spectra at five angles and the angular differential cross sections for the direct breakup components were obtained. Serber model calculation was carried out which reproduces well the experimental distribution, in agreement with the assumption of the direct breakup mechanism. Fermi model calculation was also applied to estimate the contribution of the reaction phase space. Subtraction of this contribution from the experimental data indicates that the t+t configuration takes about 1/3 of the total probability in the initial state of ⁶He,whereas the configuration of ⁴He core plus valence neutrons takes another 2/3 of the total probability.

References

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ZHANG Gao-Long, YE Yan-Lin, JIANG Dong-Xing, ZHENG Tao, LI Zhi-Huan, LI Xiang-Qing, WU Cui-E, CHEN Zhi-Qiang, HU Qing-Yuan, PANG Dan-Yang and WANG Jia. Experimental Study of the t+t Structure in 6He[J]. Chinese Physics C, 2005, 29(10): 940-943.

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Received: 2005-01-28
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Experimental Study of the t+t Structure in 6He

Corresponding author: YE Yan-Lin,

1 School of Physics and the MOE Key Laboratory of Heavy Ion Physics,Peking University,Beijing 100871,China2 RIKEN,2-1 Hirosawa, Wako,Saitama 351-0198,Japan

Received Date: 2005-01-28
Accepted Date: 1900-01-01
Available Online: 2005-10-05

Abstract: The triton fragments produced in the reaction of 25MeV/u ⁶He on ⁹Be target were detected by a set of telescopes. Energy spectra at five angles and the angular differential cross sections for the direct breakup components were obtained. Serber model calculation was carried out which reproduces well the experimental distribution, in agreement with the assumption of the direct breakup mechanism. Fermi model calculation was also applied to estimate the contribution of the reaction phase space. Subtraction of this contribution from the experimental data indicates that the t+t configuration takes about 1/3 of the total probability in the initial state of ⁶He,whereas the configuration of ⁴He core plus valence neutrons takes another 2/3 of the total probability.