Radioactive Decay of <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi mathvariant="normal">Cs</mi></mrow><mrow><mn>134</mn></mrow></msup></mrow></math></span> and <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi mathvariant="normal">Cs</mi></mrow><mrow><mn>1</mn><mn>3</mn><mn>4</mn><mi>m</mi></mrow></msup></mrow></math></span>

G. L. Keister; E. B. Lee; F. H. Schmidt

doi:10.1103/PhysRev.97.451

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Radioactive Decay of ${Cs}^{134}$ and ${Cs}^{134 m}$

G. L. Keister^*, E. B. Lee^†, and F. H. Schmidt

Department of Physics, University of Washington, Seattle, Washington

^*Now at Boeing Airplane Company, Seattle, Washington.
^†Now at Bell Telephone Laboratories, New York, New York.

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Phys. Rev. 97, 451 – Published 15 January, 1955

DOI: https://doi.org/10.1103/PhysRev.97.451

Abstract

The radiations of ${Cs}^{134}$ (2.3 yr) and ${Cs}^{134 m}$ (3.15 hr) have been studied in a high-resolution beta-ray spectrometer. The gamma rays of ${Cs}^{134}$ were observed both by internal and external conversion, and coincidence rates were measured between the beta continuum and the internal conversion electrons of the stronger gamma rays. The beta spectrum of ${Cs}^{134}$ appears to consist of four, or possibly five, components. Nine gamma rays were found both by internal and external conversion; a tenth gamma ray appears only in internal conversion. A decay scheme is proposed which is reasonably consistent with the multipole order of each of the radiations as obtained from internal conversion data.

A search was made for a ground- or intermediate-state beta transition from ${Cs}^{134 m}$ . No transition to the ground state was observed, but some indication was found for a weak transition to an excited state.

References (18)

L. G. Elliot and R. E. Bell, Phys. Rev. 72, 979 (1947)
K. Way, Nuclear Data, National Bureau of Standards Circular No. 499 (U. S. Government Printing Office, Washington, D. C., 1950)
Waggoner, Moon, and Roberts, Phys. Rev. 80, 420 (1950)
F. H. Schmidt and G. L. Keister, Phys. Rev. 86, 632 (1952)
Hollander, Perlman, and Seaborg, Revs. Modern Phys. 25, 469 (1953)
Cork, LeBlanc, Nester, Martin, and Price, Phys. Rev. 90, 444 (1953)
F. H. Schmidt, Rev. Sci. Instr. 23, 361 (1952)
W. Heitler, The Quantum Theory of Radiation (Oxford University Press, London, 1944)
Schmidt, Farwell, Henderson, Morgan, and Streib, Rev. Sci. Instr. 25, 499 (1954)
G. L. Keister and F. H. Schmidt, Phys. Rev. 93, 140 (1954)
[4]
W. Mims and H. Halban, Proc. Phys. Soc. (London) A64, 311 (1951)
Rose, Goertzel, and Perry, Oak Ridge National Laboratory Report 1023, 1951 (unpublished)
B. L. Robinson and L. Madansky, Phys. Rev. 84, 604 (1951)
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E. H. Bellamy and K. F. Smith, Phil. Mag. (7) 44, 33 (1953)

[c1] L. G. Elliot and R. E. Bell, Phys. Rev. 72, 979 (1947)

[c2] K. Way, Nuclear Data, National Bureau of Standards Circular No. 499 (U. S. Government Printing Office, Washington, D. C., 1950)

[c3] Waggoner, Moon, and Roberts, Phys. Rev. 80, 420 (1950)

[c4] F. H. Schmidt and G. L. Keister, Phys. Rev. 86, 632 (1952)

[c5] Hollander, Perlman, and Seaborg, Revs. Modern Phys. 25, 469 (1953)

[c6] Cork, LeBlanc, Nester, Martin, and Price, Phys. Rev. 90, 444 (1953)

[c7] F. H. Schmidt, Rev. Sci. Instr. 23, 361 (1952)

[c8] W. Heitler, The Quantum Theory of Radiation (Oxford University Press, London, 1944)

[c9] Schmidt, Farwell, Henderson, Morgan, and Streib, Rev. Sci. Instr. 25, 499 (1954)

[c10] G. L. Keister and F. H. Schmidt, Phys. Rev. 93, 140 (1954)

[c11] [4]

[c12] W. Mims and H. Halban, Proc. Phys. Soc. (London) A64, 311 (1951)

[c13] Rose, Goertzel, and Perry, Oak Ridge National Laboratory Report 1023, 1951 (unpublished)

[c14] B. L. Robinson and L. Madansky, Phys. Rev. 84, 604 (1951)

[c15] M. Goldhaber and A. W. Sunyar, Phys. Rev. 83, 906 (1951)

[c16] Rose, Goertzel, and Swift, Oak Ridge National Laboratory Report (unpublished)

[c17] A. W. Sunyar, Phys. Rev. 83, 864 (1951)

[c18] E. H. Bellamy and K. F. Smith, Phil. Mag. (7) 44, 33 (1953)

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Radioactive Decay of ${Cs}^{134}$ and ${Cs}^{134 m}$

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Radioactive Decay of Cs134 and Cs134m

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References (18)

Radioactive Decay of ${Cs}^{134}$ and ${Cs}^{134 m}$