Decay of the Odd-Odd Isomer <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi mathvariant="normal">Tl</mi></mrow><mrow><mn>1</mn><mn>9</mn><mn>8</mn><mi>m</mi></mrow></msup></mrow></math></span>

T. O. Passell; M. C. Michel; I. Bergström

doi:10.1103/PhysRev.95.999

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Decay of the Odd-Odd Isomer ${Tl}^{198 m}$

T. O. Passell, M. C. Michel, and I. Bergström^*

Radiation Laboratory and Department of Chemistry, University of California, Berkeley, California

^*On leave of absence from the Nobel Institute for Physics, Stockholm, Sweden, with a grant from Svenska Atomkommitten.

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Phys. Rev. 95, 999 – Published 15 August, 1954

DOI: https://doi.org/10.1103/PhysRev.95.999

Abstract

The electron spectrum of ${Tl}^{198 m}$ has been investigated in a 25-cm double-focusing beta spectrometer with a resolution of approximately 0.4 percent. The electron lines have been assigned to three gamma rays with energies (in kev) 261.5, 284, and 48.4, respectively. The multipolarities assigned from conversion ratio and lifetime considerations are $M 4$ , $M 1 + E 2$ , and $E 2$ , respectively. A tentative decay scheme is proposed which is consistent with all the available data.

References (18)

Orth, Marquez, Heiman, and Templeton, Phys. Rev. 75, 1100 (1949)
M. C. Michel and D. H. Templeton, Phys. Rev. 93, 1422 (1954)
M. C. Michel, Ph.D. thesis, University of California Unclassified Report UCRL-2267, 1953 (unpublished)
Bergström, Hill, and DePasquali, Phys. Rev. 92, 918 (1953)
G. D. O'Kelley, Ph.D. thesis, University of California Unclassified Report UCRL-1243, 1951 (unpublished)
W. L. Bendel, Ph.D. thesis, University of Illinois, 1953 (unpublished)
Bergström, Nybö, Thulin, Wapstra, and Aström, Arkiv Fysik 7, No. 22 (1953)
M. Goldhaber and A. W. Sunyar, Phys. Rev. 83, 906 (1951)
N. Tralli and I. S. Lowen, Phys. Rev. 76, 1541 (1949)
J. W. Mihelich and A. deShalit, Phys. Rev. 93, 135 (1954)
Rose, Goertzel, and Perry, Oak Ridge National Laboratory Unclassified Report ORNL-1023, June 1951 (unpublished)
R. Montalbetti, Can. J. Phys. 30, 660 (1952)
Gellman, Griffith, and Stanley, Phys. Rev. 85, 944 (1952)
H. M. Neumann and I. Perlman, Phys. Rev. 78, 191 (1950)
Frauenfelder, Lawson, Jentschke, and DePasquali, Phys. Rev. 92, 1241 (1953)
M. Goldhaber and R. D. Hill, Revs. Modern Phys. 24, 179 (1952)
D. Maeder and A. H. Wapstra, Phys. Rev. 93, 1433 (1954)
D. E. Alburger and M. H. L. Pryce, Phys. Rev. 92, 514 (1953)

[c1] Orth, Marquez, Heiman, and Templeton, Phys. Rev. 75, 1100 (1949)

[c2] M. C. Michel and D. H. Templeton, Phys. Rev. 93, 1422 (1954)

[c3] M. C. Michel, Ph.D. thesis, University of California Unclassified Report UCRL-2267, 1953 (unpublished)

[c4] Bergström, Hill, and DePasquali, Phys. Rev. 92, 918 (1953)

[c5] G. D. O'Kelley, Ph.D. thesis, University of California Unclassified Report UCRL-1243, 1951 (unpublished)

[c6] W. L. Bendel, Ph.D. thesis, University of Illinois, 1953 (unpublished)

[c7] Bergström, Nybö, Thulin, Wapstra, and Aström, Arkiv Fysik 7, No. 22 (1953)

[c8] M. Goldhaber and A. W. Sunyar, Phys. Rev. 83, 906 (1951)

[c9] N. Tralli and I. S. Lowen, Phys. Rev. 76, 1541 (1949)

[c10] J. W. Mihelich and A. deShalit, Phys. Rev. 93, 135 (1954)

[c11] Rose, Goertzel, and Perry, Oak Ridge National Laboratory Unclassified Report ORNL-1023, June 1951 (unpublished)

[c12] R. Montalbetti, Can. J. Phys. 30, 660 (1952)

[c13] Gellman, Griffith, and Stanley, Phys. Rev. 85, 944 (1952)

[c14] H. M. Neumann and I. Perlman, Phys. Rev. 78, 191 (1950)

[c15] Frauenfelder, Lawson, Jentschke, and DePasquali, Phys. Rev. 92, 1241 (1953)

[c16] M. Goldhaber and R. D. Hill, Revs. Modern Phys. 24, 179 (1952)

[c17] D. Maeder and A. H. Wapstra, Phys. Rev. 93, 1433 (1954)

[c18] D. E. Alburger and M. H. L. Pryce, Phys. Rev. 92, 514 (1953)

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Decay of the Odd-Odd Isomer Tl198m

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References (18)

Decay of the Odd-Odd Isomer ${Tl}^{198 m}$