Chinese Physics C > 1990, Vol. 14 > Issue(7): 629-634

FISSION MEASUREMENT ON 5.5 TO 21.7MeV/A²⁸Si+¹⁹⁷Au SYSTEM (Ⅰ) LINEAR MOMENTUM TRANSFER AND DISTRIBUTION OF OUT-OF-REACTION PLANE

Institute of Modern Physics,Academia Sinica,Lanzhou1 Lawrence Berkeley Laboratory,Berkeley,California,CA-94720,U.S.A

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Abstract：
The velocities and angular distributions of fission partner emitted from reaction in ²⁸Si+ ¹⁹⁷Au system with energies from 5.5 up to 21.7MeV/A are measured.These results show that when the in cident energies are larger than 10MeV/A,the in complete fusion-fission (ICF) associated with in-complete momentum transfer (LMT) appears.Furthermore,when E _cm>200MeV,as a companion of ICF,the sequential fission (SF) with lower LMT than that of ICF,has apparent yields.By the difference of LMT for ICF and SF over total fission cross-section has been obtained.Meanwhile,the distribution around the reaction plane of one fragment with a standard deviation has been obtained.It seems that there is a simple linear global relationship between the deviation and excitation energy per nucleon in heavier composite systems.

References

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DAI Guang-Xi, QI Yu-Jin, ZHENG Ji-Wen, LIU Xi-Ming and FISSION MEASUREMENT ON 5.5 TO 21.7MeV/A ²⁸Si+ ¹⁹⁷Au SYSTEM (Ⅰ) LINEAR MOMENTUM TRANSFER AND DISTRIBUTION OF OUT-OF-REACTION PLANE[J]. Chinese Physics C, 1990, 14(7): 629-634.

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

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通讯作者:陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

FISSION MEASUREMENT ON 5.5 TO 21.7MeV/A²⁸Si+¹⁹⁷Au SYSTEM (Ⅰ) LINEAR MOMENTUM TRANSFER AND DISTRIBUTION OF OUT-OF-REACTION PLANE

Corresponding author:DAI Guang-Xi,

Institute of Modern Physics,Academia Sinica,Lanzhou1 Lawrence Berkeley Laboratory,Berkeley,California,CA-94720,U.S.A

Received Date:1900-01-01

Accepted Date:1900-01-01

Available Online:1990-07-05

Abstract:The velocities and angular distributions of fission partner emitted from reaction in²⁸Si+¹⁹⁷Au system with energies from 5.5 up to 21.7MeV/A are measured.These results show that when the in cident energies are larger than 10MeV/A,the in complete fusion-fission (ICF) associated with in-complete momentum transfer (LMT) appears.Furthermore,when E_cm>200MeV,as a companion of ICF,the sequential fission (SF) with lower LMT than that of ICF,has apparent yields.By the difference of LMT for ICF and SF over total fission cross-section has been obtained.Meanwhile,the distribution around the reaction plane of one fragment with a standard deviation has been obtained.It seems that there is a simple linear global relationship between the deviation and excitation energy per nucleon in heavier composite systems.

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FISSION MEASUREMENT ON 5.5 TO 21.7MeV/A²⁸Si+¹⁹⁷Au SYSTEM (Ⅰ) LINEAR MOMENTUM TRANSFER AND DISTRIBUTION OF OUT-OF-REACTION PLANE

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