Alpha-Decay Properties of Some Francium Isotopes Near the 126-Neutron Closed Shell

Roger D. Griffioen; Ronald D. Macfarlane

doi:10.1103/PhysRev.133.B1373

Access by Xinjiang University

Alpha-Decay Properties of Some Francium Isotopes Near the 126-Neutron Closed Shell

Roger D. Griffioen^* and Ronald D. Macfarlane^†

Lawrence Radiation Laboratory, University of California, Berkeley, California

^*Present address: Physics Department, Calvin College, Grand Rapids, Michigan.
^†Present address: Chemistry Department, McMaster University, Hamilton, Ontario, Canada.

PDF

Phys. Rev. 133, B1373 – Published 23 March, 1964

DOI: https://doi.org/10.1103/PhysRev.133.B1373

Abstract

Several new alpha-emitting isotopes of francium have been produced by the reactions ${Au}^{197} (O^{16}, x n) {Fr}^{213 - x}$ , ${Tl}^{203} (C^{12}, x n) {Fr}^{215 - x}$ , ${Tl}^{205} (C^{12}, x n) {Fr}^{217 - x}$ , and ${Pb}^{208} (B^{11}, x n) {Fr}^{219 - x}$ . The nuclides studies lie on or below the 126-neutron closed shell. Their alpha-decay properties are as follows:

Alpha-decay reduced widths $δ^{2}$ were calculated by using beta-decay systematics from this region to estimate the beta branching ratios. These reduced widths are compared to those of the isotonic polonium isotopes.

References (24)

H. J. Mang, Z. Physik 148, 582 (1957)
D. J. Brussard and H. A. Tolhoek, Physica 24, 263 (1958)
H. J. Mang, Theory of α-Decay, Lawrence Radiation Laboratory Report UCRL-8931, 1959 (unpublished)
K. Harada, Progr. Theoret. Phys. (Kyoto). 26, 667 (1961)
J. O. Rasmussen, Nucl. Phys. 44, 93 (1963)
H. J. Mang, Phys. Rev. 119, 1069 (1960)
R. D. Macfarlane and R. D. Griffioen, Phys. Rev. 130, 1491 (1963)
R. D. Macfarlane and R. D. Griffioen, Phys. Rev. 131, 2176 (1963)
L. C. Northcliffe, Phys. Rev. 120, 1744 (1960)
E. L. Hubbard, Lawrence Radiation Laboratory Report UCRL-9053, 1960 (unpublished)
R. D. Macfarlane, Phys. Rev. 126, 274 (1962)
R. D. Griffioen and R. D. Macfarlane, Bull. Am. Phys. Soc. 7, 541 (1962)
R. D. Macfarlane and R. D. Griffioen, Nucl. Instr. Methods (to be published)
P. A. Seeger, Nucl. Phys. 25, 1 (1961)
T. D. Thomas, G. E. Gordon, R. M. Latimer, and G. T. Seaborg, Phys. Rev. 126, 1805 (1962)
D. Strominger, J. M. Hollander, and G. T. Seaborg, Rev. Mod. Phys. 30, 585 (1958)
R. M. Latimer, G. E. Gordon, and T. D. Thomas, J. Inorg. Nucl. Chem. 17, 1 (1961)
W. Forsling, T. Alväger, L. W. Holm, O. Melin, J. Uhler, and B. Aström, Arkiv Fysik 19, 83 (1961)
G. A. Pik-Pichak, Zh. Eksperim. i Teor. Fiz. 34, 341 (1958) [English transl.: Soviet Phys.—JETP 7, 238 (1958)]
J. R. Huizenga and R. Vandenbosch, in Nuclear Reactions (North-Holland Publishing Company, Amsterdam, 1962), Vol. 2
E. K. Hyde, A. Ghiorso, and G. T. Seaborg, Phys. Rev. 77, 765 (1950)
J. O. Rasmussen, Phys. Rev. 113, 1593 (1959)
G. Igo, Phys. Rev. Letters 1, 72 (1958)
J. O. Rasmussen, Phys. Rev. 115, 1675 (1959)

[c1] H. J. Mang, Z. Physik 148, 582 (1957)

[c2] D. J. Brussard and H. A. Tolhoek, Physica 24, 263 (1958)

[c3] H. J. Mang, Theory of α-Decay, Lawrence Radiation Laboratory Report UCRL-8931, 1959 (unpublished)

[c4] K. Harada, Progr. Theoret. Phys. (Kyoto). 26, 667 (1961)

[c5] J. O. Rasmussen, Nucl. Phys. 44, 93 (1963)

[c6] H. J. Mang, Phys. Rev. 119, 1069 (1960)

[c7] R. D. Macfarlane and R. D. Griffioen, Phys. Rev. 130, 1491 (1963)

[c8] R. D. Macfarlane and R. D. Griffioen, Phys. Rev. 131, 2176 (1963)

[c9] L. C. Northcliffe, Phys. Rev. 120, 1744 (1960)

[c10] E. L. Hubbard, Lawrence Radiation Laboratory Report UCRL-9053, 1960 (unpublished)

[c11] R. D. Macfarlane, Phys. Rev. 126, 274 (1962)

[c12] R. D. Griffioen and R. D. Macfarlane, Bull. Am. Phys. Soc. 7, 541 (1962)

[c13] R. D. Macfarlane and R. D. Griffioen, Nucl. Instr. Methods (to be published)

[c14] P. A. Seeger, Nucl. Phys. 25, 1 (1961)

[c15] T. D. Thomas, G. E. Gordon, R. M. Latimer, and G. T. Seaborg, Phys. Rev. 126, 1805 (1962)

[c16] D. Strominger, J. M. Hollander, and G. T. Seaborg, Rev. Mod. Phys. 30, 585 (1958)

[c17] R. M. Latimer, G. E. Gordon, and T. D. Thomas, J. Inorg. Nucl. Chem. 17, 1 (1961)

[c18] W. Forsling, T. Alväger, L. W. Holm, O. Melin, J. Uhler, and B. Aström, Arkiv Fysik 19, 83 (1961)

[c19] G. A. Pik-Pichak, Zh. Eksperim. i Teor. Fiz. 34, 341 (1958) [English transl.: Soviet Phys.—JETP 7, 238 (1958)]

[c20] J. R. Huizenga and R. Vandenbosch, in Nuclear Reactions (North-Holland Publishing Company, Amsterdam, 1962), Vol. 2

[c21] E. K. Hyde, A. Ghiorso, and G. T. Seaborg, Phys. Rev. 77, 765 (1950)

[c22] J. O. Rasmussen, Phys. Rev. 113, 1593 (1959)

[c23] G. Igo, Phys. Rev. Letters 1, 72 (1958)

[c24] J. O. Rasmussen, Phys. Rev. 115, 1675 (1959)

Physical Review Journals Archive

Export citation

Export citation

Alpha-Decay Properties of Some Francium Isotopes Near the 126-Neutron Closed Shell

Abstract

References (24)

Outline

Information

Filter

Filter

Article Lookup

Enter a citation