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Chinese Physics C> 1987, Vol. 11> Issue(3) : 376-383 

CHARGE DISTRIBUTION IN THE 14.7MeV-NEUTRON-INDUCED FISSION OF 232Th: INDEPENDENT YIELDS OF ISOTOPES OF Rh, Ag, In AND Sb

  • The 12 cumulative yields and 7 independent yields in the symmetric region were determined in the fission of 232Th induced by 14.7MeV neutrons with nuclear chemistry techniques. The independent yields of the present work, along with the independent yields obtained in our previous work, were used to calculate the empirical Zp values on the basis of a Gaussian charge distribution function with a σ of 0.56. A mean value of 0.49±0.25 for ΔZ(=Zp—ZUCD) is obtained from all Zp values in the asymmetric region. Abnormal ΔZ values in the symmetric region seem to suggest that the width of charge distribution for symmetric splits is larger than the value of 0.56. The results show strongly in favor of the Two-Mode-Fission-Hypothesis.

  • References

    [1] A. C. Wahl et al., Phys. Rev., 126(1962), 1112.[2] A. C. Wahl et al., in Proceedings of the Second International Symposium on the Physics and Chemistry of Fission, Vienna, P. 813, 1969.[3] H. Gaggeler et al., J. Inorg. Nucl. Chem., 38(1976), 205.[4] H. GHggeler and H. R. Von Gunten, Phys. Rev., C17(1978), 172.[5] S. A. Rao, Phys. Rev., C5(1972), 171.[6] A. C. Wahl et al., Phys. Rev., C32(1985), 184.[7] 李文新等, 高能物理与核物理, 6(1982),365.[8] A. S. Rao et al., J. Inorg. Nucl. Chem., 31(1969), 591.[9] S. A. Rao and P. K. Kuroda, J. Inorg. Nucl. Chem., 35(1973), 1443.[10] 孙彤玉、孙秀华等, 近代物理研究所内部资料, 1982年.[11] 李文新等, 核化学与放射化学, 2(1980), 9.[12] D. L. Swindle et al., J. Inorg. Nucl. Chem., 33(1971), 651.[13] U. Reus et al., Comma-Ray Cazalog, CSI-Report 79-2.[14] L. H. Gevaert et al., Can. J. Chcm., 48(1970), 641.[15] R. Ganapathy and P. K. Kuroda, J. Inorg. Nucl. Chcm., 28(1966), 2071.[16] Tin Mo and M. N. Rao, J. Inorg. Nucl. Chcm., 30(1968), 345.[17] H. N. Erten et al., Phys. Rev., C25(1982), 2519.[18] K. Wolfsberg, Phys. Rev., 137, 4B(1965), 929.[19] J. P. Bocquet et al., Nucl. Phys., A189(1972), 556.[20] H. 0. Denschlag and S. M. Qain, J. Inorg. Nucl. Chem., 33(1971), 3649.[21] C. D. Coryell, M. Kaplan and R. D. Fink, Can. J. Chem., 39(1961), 646.[22] D. R. Nethaway and B. Mendoza, Phys. Rev., C6(1972), 1827.[23] E. C. A. Crouch, Atomic Daza and Nuclear Daza Table, 19(1977).[24] D. R. Nethaway and B. Mendoza, Phys. Rev., C6(1972). 1821.[25] D. R. Nethaway and A. E. Richardson, J. Inorg. Nucl. Chem., 43(1981), 889.

  • References

    [1] A. C. Wahl et al., Phys. Rev., 126(1962), 1112.[2] A. C. Wahl et al., in Proceedings of the Second International Symposium on the Physics and Chemistry of Fission, Vienna, P. 813, 1969.[3] H. Gaggeler et al., J. Inorg. Nucl. Chem., 38(1976), 205.[4] H. GHggeler and H. R. Von Gunten, Phys. Rev., C17(1978), 172.[5] S. A. Rao, Phys. Rev., C5(1972), 171.[6] A. C. Wahl et al., Phys. Rev., C32(1985), 184.[7] 李文新等, 高能物理与核物理, 6(1982),365.[8] A. S. Rao et al., J. Inorg. Nucl. Chem., 31(1969), 591.[9] S. A. Rao and P. K. Kuroda, J. Inorg. Nucl. Chem., 35(1973), 1443.[10] 孙彤玉、孙秀华等, 近代物理研究所内部资料, 1982年.[11] 李文新等, 核化学与放射化学, 2(1980), 9.[12] D. L. Swindle et al., J. Inorg. Nucl. Chem., 33(1971), 651.[13] U. Reus et al., Comma-Ray Cazalog, CSI-Report 79-2.[14] L. H. Gevaert et al., Can. J. Chcm., 48(1970), 641.[15] R. Ganapathy and P. K. Kuroda, J. Inorg. Nucl. Chcm., 28(1966), 2071.[16] Tin Mo and M. N. Rao, J. Inorg. Nucl. Chcm., 30(1968), 345.[17] H. N. Erten et al., Phys. Rev., C25(1982), 2519.[18] K. Wolfsberg, Phys. Rev., 137, 4B(1965), 929.[19] J. P. Bocquet et al., Nucl. Phys., A189(1972), 556.[20] H. 0. Denschlag and S. M. Qain, J. Inorg. Nucl. Chem., 33(1971), 3649.[21] C. D. Coryell, M. Kaplan and R. D. Fink, Can. J. Chem., 39(1961), 646.[22] D. R. Nethaway and B. Mendoza, Phys. Rev., C6(1972), 1827.[23] E. C. A. Crouch, Atomic Daza and Nuclear Daza Table, 19(1977).[24] D. R. Nethaway and B. Mendoza, Phys. Rev., C6(1972). 1821.[25] D. R. Nethaway and A. E. Richardson, J. Inorg. Nucl. Chem., 43(1981), 889.

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LI Wen-Xin, SUN Tong-Yu, SUN Xiu-Hua, FU Min, DONG Tian-Rong and ZHENG Man-Jiao. CHARGE DISTRIBUTION IN THE 14.7MeV-NEUTRON-INDUCED FISSION OF 232Th: INDEPENDENT YIELDS OF ISOTOPES OF Rh, Ag, In AND Sb[J]. Chinese Physics C, 1987, 11(3): 376-383.
LI Wen-Xin, SUN Tong-Yu, SUN Xiu-Hua, FU Min, DONG Tian-Rong and ZHENG Man-Jiao. CHARGE DISTRIBUTION IN THE 14.7MeV-NEUTRON-INDUCED FISSION OF 232Th: INDEPENDENT YIELDS OF ISOTOPES OF Rh, Ag, In AND Sb[J]. Chinese Physics C, 1987, 11(3): 376-383. shu
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Received: 1900-01-01
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CHARGE DISTRIBUTION IN THE 14.7MeV-NEUTRON-INDUCED FISSION OF 232Th: INDEPENDENT YIELDS OF ISOTOPES OF Rh, Ag, In AND Sb

    Corresponding author: LI Wen-Xin,
  • Received Date: 1900-01-01
  • Accepted Date: 1900-01-01
  • Available Online: 1987-06-05

Abstract: The 12 cumulative yields and 7 independent yields in the symmetric region were determined in the fission of 232Th induced by 14.7MeV neutrons with nuclear chemistry techniques. The independent yields of the present work, along with the independent yields obtained in our previous work, were used to calculate the empirical Zp values on the basis of a Gaussian charge distribution function with a σ of 0.56. A mean value of 0.49±0.25 for ΔZ(=Zp—ZUCD) is obtained from all Zp values in the asymmetric region. Abnormal ΔZ values in the symmetric region seem to suggest that the width of charge distribution for symmetric splits is larger than the value of 0.56. The results show strongly in favor of the Two-Mode-Fission-Hypothesis.

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