Fission-Fragment Angular Distributions for the <SUP>16</SUP>O+<SUP>238</SUP>U Near-and Sub-Barrier Fusion-Fission Reaction

ZHANG Huan-Qiao; LIU Zu-Hua; XU Jin-Cheng; RUAN Ming; QIAN Xing; XU Kan; LV Jun

Chinese Physics C> 1992, Vol. 16> Issue(9) : 826-831

Fission-Fragment Angular Distributions for the ¹⁶O+²³⁸U Near-and Sub-Barrier Fusion-Fission Reaction

Institute of Atomic Energy,China,102413

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Abstract：
Fission cross sections and angular distributions have been measured for the ¹⁶O+²³⁸U reaction at bombarding energies from 73.7 to 93.7 MeV.The fission excitation function is well reproduced on the basis of Wong model.The fission-fragment angular distributions are calculated in terms of the transition-state theory,with the transmission coefficents extracted from the excitation function calculation.It is found that a discrepancy between the observations and the predictions in angular anisotropy of fission fragments exists at near-and sub-barrier energies.Moreover the tendency of the anistropies as a function of the center-of-mass energy aren't the same as previous measurement results.

References

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ZHANG Huan-Qiao, LIU Zu-Hua, XU Jin-Cheng, RUAN Ming, QIAN Xing, XU Kan and LV Jun. Fission-Fragment Angular Distributions for the ¹⁶O+²³⁸U Near-and Sub-Barrier Fusion-Fission Reaction[J]. Chinese Physics C, 1992, 16(9): 826-831.

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Received: 1900-01-01
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Fission-Fragment Angular Distributions for the ¹⁶O+²³⁸U Near-and Sub-Barrier Fusion-Fission Reaction

Corresponding author: ZHANG Huan-Qiao,

Institute of Atomic Energy,China,102413

Received Date: 1900-01-01

Accepted Date: 1900-01-01

Available Online: 1992-09-05

Abstract: Fission cross sections and angular distributions have been measured for the ¹⁶O+²³⁸U reaction at bombarding energies from 73.7 to 93.7 MeV.The fission excitation function is well reproduced on the basis of Wong model.The fission-fragment angular distributions are calculated in terms of the transition-state theory,with the transmission coefficents extracted from the excitation function calculation.It is found that a discrepancy between the observations and the predictions in angular anisotropy of fission fragments exists at near-and sub-barrier energies.Moreover the tendency of the anistropies as a function of the center-of-mass energy aren't the same as previous measurement results.

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Fission-Fragment Angular Distributions for the ¹⁶O+²³⁸U Near-and Sub-Barrier Fusion-Fission Reaction

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Fission-Fragment Angular Distributions for the ¹⁶O+²³⁸U Near-and Sub-Barrier Fusion-Fission Reaction

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Fission-Fragment Angular Distributions for the 16O+238U Near-and Sub-Barrier Fusion-Fission Reaction

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Fission-Fragment Angular Distributions for the 16O+238U Near-and Sub-Barrier Fusion-Fission Reaction

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Fission-Fragment Angular Distributions for the ¹⁶O+²³⁸U Near-and Sub-Barrier Fusion-Fission Reaction

Fission-Fragment Angular Distributions for the ¹⁶O+²³⁸U Near-and Sub-Barrier Fusion-Fission Reaction