A MODEL FOR THE DETERMINATION OF FISSION SCISSION POINT CONFIGURATION

FAN XI-MING; CHAI FA-HE; HU JI-MING

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2024年10月30日

Chinese Physics C> 1983, Vol. 7> Issue(6) : 735-742

A MODEL FOR THE DETERMINATION OF FISSION SCISSION POINT CONFIGURATION

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Abstract：
An energy criterion is given for the determination of fission scission point configuration. It is assumed that the splitting of the nucleus occures immediately, if the deformation energy decreases monotonously as the decreasing of the neck radius, with the shape of the nucleus kept essentially unchanged. Otherwise, the deformation of the nucleus will continue untill the above condition is met. With this criterion and a suitable shape parametrization, the post scission phenomena of neutron induced fission of ²³⁵U are studied in the statistical model (neutron energy 0—14MeV). The calculated average fragment kinetic energy, fragment mass and charge distributions agree well with the experimental results. No adjustable constants is introduced.

References

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P. Fong, Phys. Rev., 89(1953), 332; Phys. Rev., 102(1956), 434.[2] T. Yamamoto and K. Sugiyama, J. Nucl. Sci. Techrol., 11(1974), 461.[3] 贺泽君,李盘林,高能物理与核物理,2(1980), 350,[4] B. D. Wilkins et al., Phys. Rev., C14(1976), 1832.[5] K. T. R. Davies et al., Phys. Rev., C16(1977), 1890.[6] W. D. Myers and W. J. Swiatreki, ARLIV F0R FPSIK, 36(1968), 343.[7] R. Yandenboseh and J. R. Huizenga, Nuclear Fission, (1973), New York, p. 291.[8] H. Okamoto et al., J. Phys. Soc. Japan, 30(1973), 927.[9] J. P. Unik et al., Phys. and Chem. of Fiission, (Vienna: IAEA), 2(1973), 37.[10] A. Gilbert and A. G. W. Cameron, Can. J. Phys., 43(1965), 1466.[11] P. E. Hodgson, Nuclear Heavy-ion Reaction, (1918), Oxford, p. 505.[12] G. Siegert et al., Phys. Rev., C14(1976), 1864.[13] S. Amiel and H. Feldstein, Phys. and Chem. of Fission, (Vienna: IAEA), 2(1973), 65[14] H. W. Schmitt et al., Phys. Rev., 141(1966), 1146.[15] P. Fong, Phys. Rev., C10(1974), 1122.

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FAN XI-MING, CHAI FA-HE and HU JI-MING. A MODEL FOR THE DETERMINATION OF FISSION SCISSION POINT CONFIGURATION[J]. Chinese Physics C, 1983, 7(6): 735-742.

FAN XI-MING, CHAI FA-HE and HU JI-MING. A MODEL FOR THE DETERMINATION OF FISSION SCISSION POINT CONFIGURATION[J]. Chinese Physics C, 1983, 7(6): 735-742. shu

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Received: 1900-01-01
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

A MODEL FOR THE DETERMINATION OF FISSION SCISSION POINT CONFIGURATION

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1983-12-05

Abstract: An energy criterion is given for the determination of fission scission point configuration. It is assumed that the splitting of the nucleus occures immediately, if the deformation energy decreases monotonously as the decreasing of the neck radius, with the shape of the nucleus kept essentially unchanged. Otherwise, the deformation of the nucleus will continue untill the above condition is met. With this criterion and a suitable shape parametrization, the post scission phenomena of neutron induced fission of ²³⁵U are studied in the statistical model (neutron energy 0—14MeV). The calculated average fragment kinetic energy, fragment mass and charge distributions agree well with the experimental results. No adjustable constants is introduced.