INCOMPLETE AND SEQUENTIAL FISSION IN <SUP>28</SUP>Si+<SUP>238</SUP>U SYSTEMS

DAI Guang-Xi; QI Yu-Jin; ZHENG Ji-Wen; LIU Xi-Ming

Chinese Physics C> 1990, Vol. 14> Issue(10) : 912-918

INCOMPLETE AND SEQUENTIAL FISSION IN ²⁸Si+²³⁸U SYSTEMS

Institute of Modern Physics,Academia Sinica,P.O.Box 31,Lanzhou1 LBL,1 Cyclotron Rood Berkeley,California,CA-94720,USA

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Abstract：
The Linear Momentum Transfer (LMT) in ²⁸Si+²³⁸U system with incident energies of 15.0 and 21.7MeV/A have been measured by fission partner fragments.By cutting different regions in LMT distribution,the Sequential Fission (SF) and the incomplete fusion fission events could be separated; as a result,the ratio of SF yield over total fission yield is obtained.Around the reaction plance,the standard deviation of fragment distribution,due to the recoil effect of particle emission on the fragment has been measured and discussed.

References

[1]

戴光曦等，高能物理与核物理,9(1985),454.[2] Dai Guangxi (G. Dai), R. Bock, A. Gobbi et al., proc. Tsukuba Intern. symp. on H-I Fusion Reaction,(1984): 205.[3] Y. Chan, et al., LBL-23381, (1987).[4] M. Fatyga, et aI., Phys. Rev. Lett., 55(1985), 1376.[5] S. Leray, et al., Nucl. Phys., A425 (1984), 345.[6] M. Mostefai, et al., J. Phys. Colloque, C4, Suppl., 47 (1986), 361.[7] U. Jahnke, J. Phys. Cdloque C4, Suppl., 47 (1986), 317.[8] 戴光曦等，高能物理与核物理，5.5-22MeV /A28Si+199Au系统的裂变测量，待发表.[9] V. E. Vioia, Jr., Nucl. Data Sect., A1 (1966), 391, Phys. Rev., C31 (1985), 1950.[10] R. Stokstad,私人通讯;(1988).

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DAI Guang-Xi, QI Yu-Jin, ZHENG Ji-Wen, LIU Xi-Ming, INCOMPLETE AND SEQUENTIAL FISSION IN ²⁸Si+²³⁸U SYSTEMS[J]. Chinese Physics C, 1990, 14(10): 912-918.

DAI Guang-Xi, QI Yu-Jin, ZHENG Ji-Wen, LIU Xi-Ming, INCOMPLETE AND SEQUENTIAL FISSION IN ²⁸Si+²³⁸U SYSTEMS[J]. Chinese Physics C, 1990, 14(10): 912-918. shu

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Received: 1900-01-01
Revised: 1900-01-01

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

INCOMPLETE AND SEQUENTIAL FISSION IN ²⁸Si+²³⁸U SYSTEMS

Corresponding author: DAI Guang-Xi,

Institute of Modern Physics,Academia Sinica,P.O.Box 31,Lanzhou1 LBL,1 Cyclotron Rood Berkeley,California,CA-94720,USA

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1990-10-05

Abstract: The Linear Momentum Transfer (LMT) in ²⁸Si+²³⁸U system with incident energies of 15.0 and 21.7MeV/A have been measured by fission partner fragments.By cutting different regions in LMT distribution,the Sequential Fission (SF) and the incomplete fusion fission events could be separated; as a result,the ratio of SF yield over total fission yield is obtained.Around the reaction plance,the standard deviation of fragment distribution,due to the recoil effect of particle emission on the fragment has been measured and discussed.