Prompt Neutrons from Spontaneous Fission of <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">Fm</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>257</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span>

E. Cheifetz; H. R. Bowman; J. B. Hunter; S. G. Thompson

doi:10.1103/PhysRevC.3.2017

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Prompt Neutrons from Spontaneous Fission of ${}^{257}{Fm}$

E. Cheifetz^*, H. R. Bowman, J. B. Hunter, and S. G. Thompson

Lawrence Radiation Laboratory, University of California, Berkeley, California 94720

^*On leave of absence from the Weizmann Institute of Science, Rehovot, Israel.

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Phys. Rev. C 3, 2017 – Published 1 May, 1971

DOI: https://doi.org/10.1103/PhysRevC.3.2017

Abstract

The average number of prompt neutrons ( $\bar{ν}$ ) emitted in the spontaneous fission of ${}^{257}{Fm}$ has been measured to be 3.97 ± 0.13 (based on $\bar{ν} = 3.72$ for ${}^{252}{Cf}$ ). This result and the known values of $\bar{ν}$ for other nuclei that undergo spontaneous fission are transformed into excitation-energy values and compared with the liquid-drop predictions regarding the excitation-energy dependence on the fissionability parameter.

References (7)

E. K. Hyde, The Nuclear Properties of the Heavy Elements (Prentice Hall, Englewood Cliffs, New Jersey, 1964), Vol. III
J. R. Nix, Phys. Letters 30B, 1 (1969)
V. J. Ashby, H. C. Canton, L. L. Newkirk, and C. J. Taylor, Phys. Rev. 111, 616 (1958)
S. F. Eccles and E. K. Hulet, University of California Lawrence Radiation Laboratory Report No. UCRL-50767, 1969 (unpublished)
A. De Volpi and K. G. Porges, Phys. Rev. C 1, 683 (1970)
G. T. Garvey, W. J. Gerace, R. L. Jaffe, I. Talmi, and I. Kelson, Rev. Mod. Phys. 41, 1 (1969)
J. R. Nix, Nucl. Phys. A130, 241 (1969)

[c1] E. K. Hyde, The Nuclear Properties of the Heavy Elements (Prentice Hall, Englewood Cliffs, New Jersey, 1964), Vol. III

[c2] J. R. Nix, Phys. Letters 30B, 1 (1969)

[c3] V. J. Ashby, H. C. Canton, L. L. Newkirk, and C. J. Taylor, Phys. Rev. 111, 616 (1958)

[c4] S. F. Eccles and E. K. Hulet, University of California Lawrence Radiation Laboratory Report No. UCRL-50767, 1969 (unpublished)

[c5] A. De Volpi and K. G. Porges, Phys. Rev. C 1, 683 (1970)

[c6] G. T. Garvey, W. J. Gerace, R. L. Jaffe, I. Talmi, and I. Kelson, Rev. Mod. Phys. 41, 1 (1969)

[c7] J. R. Nix, Nucl. Phys. A130, 241 (1969)

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Prompt Neutrons from Spontaneous Fission of ${}^{257}{Fm}$

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Prompt Neutrons from Spontaneous Fission of Fm257

Abstract

References (7)

Prompt Neutrons from Spontaneous Fission of ${}^{257}{Fm}$