Decay Scheme of <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi mathvariant="normal">Rb</mi></mrow><mrow><mn>83</mn></mrow></msup></mrow></math></span>

I. Dostrovsky; S. Katcoff; A. W. Stoenner

doi:10.1103/PhysRev.136.B44

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Decay Scheme of ${Rb}^{83}$

I. Dostrovsky^*, S. Katcoff, and A. W. Stoenner

Chemistry Department, Brookhaven National Laboratory, Upton, New York

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

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Phys. Rev. 136, B44 – Published 12 October, 1964

DOI: https://doi.org/10.1103/PhysRev.136.B44

Abstract

We have re-examined the decay of ${Rb}^{83}$ , which is reported to decay by electron capture, with emission of a single $γ$ ray of 525 keV, to the 1.86-h isomer of ${Kr}^{83}$ . With the aid of a lithium-drifted germanium detector and with a high-resolution beta spectrometer we find that the 525-keV photopeak observed with NaI crystals is really a superposition of three $γ$ rays at 521 keV (46%), 530 keV (31%), and 553 keV (16%). An additional $γ$ ray was found at 790 keV with intensity of 0.9%. Various coincidence experiments showed that only the 521- and 530-keV transitions lead to the 1.86-h ${Kr}^{83 m}$ . The 553- and 790-keV transitions lead to the 9.3-keV level of ${Kr}^{83}$ . Direct electron capture to this level has also been obsered with an intensity of 6%. The fraction of ${Rb}^{83}$ disintegrations bypassing the isomeric state of ${Kr}^{83}$ is 23%. The following new levels were assigned to ${Kr}^{83}$ : 562, 571, and 799 keV. The total disintegration energy of ${Rb}^{83}$ was shown to be ≥825 keV.

References (16)

D. G. Karraker and D. H. Templeton, Phys. Rev. 80, 646 (1950)
S. V. Castner and D. H. Templeton, Phys. Rev. 88, 1126 (1952)
M. L. Perlman and J. P. Welker, Phys. Rev. 100, 81 (1955)
M. Goldhaber and R. D. Hill, Rev. Mod. Phys. 24, 179 (1952)
I. Bergström, Phys. Rev. 81, 638 (1951) Arkiv Fysik 5, 191 (1952)
P. T. Barret, Proc. Phys. Soc. (London) 65A, 450 (1952)
S. L. Ruby, Y. Hazoni, and M. Pasternak, Phys. Rev. 129, 826 (1963)
H. R. Fickel and S. Fatcoff (private communication)
S. Katcoff and A. Wyttenbach (private communication)
I. Dostrovsky and R. W. Stoenner (private communication)
M. E. Rose, Internal Conversion Coefficients (North-Holland Publishing Company, Amsterdam, 1958)
K. Takahashi, M. McKeown, and G. Scharff-Goldhaber, Phys. Rev. 136, B18 (1964)
M. Yamada and Z. Matumoto, J. Phys. Soc. Japan 16, 1497 (1961)
Nuclear Data Sheets, compiled by K. Way et al. (Printing and Publishing Office, National Academy of Sciences—National Research Council, Washington 25, D. C.), NRC-59-1-77
M. Pasternak and T. Sonnino, Israel Atomic Energy Commission Report IA-827, 1963 (unpublished)
T. Sonnino (private communication)

[c1] D. G. Karraker and D. H. Templeton, Phys. Rev. 80, 646 (1950)

[c2] S. V. Castner and D. H. Templeton, Phys. Rev. 88, 1126 (1952)

[c3] M. L. Perlman and J. P. Welker, Phys. Rev. 100, 81 (1955)

[c4] M. Goldhaber and R. D. Hill, Rev. Mod. Phys. 24, 179 (1952)

[c5] I. Bergström, Phys. Rev. 81, 638 (1951) Arkiv Fysik 5, 191 (1952)

[c6] P. T. Barret, Proc. Phys. Soc. (London) 65A, 450 (1952)

[c7] S. L. Ruby, Y. Hazoni, and M. Pasternak, Phys. Rev. 129, 826 (1963)

[c8] H. R. Fickel and S. Fatcoff (private communication)

[c9] S. Katcoff and A. Wyttenbach (private communication)

[c10] I. Dostrovsky and R. W. Stoenner (private communication)

[c11] M. E. Rose, Internal Conversion Coefficients (North-Holland Publishing Company, Amsterdam, 1958)

[c12] K. Takahashi, M. McKeown, and G. Scharff-Goldhaber, Phys. Rev. 136, B18 (1964)

[c13] M. Yamada and Z. Matumoto, J. Phys. Soc. Japan 16, 1497 (1961)

[c14] Nuclear Data Sheets, compiled by K. Way et al. (Printing and Publishing Office, National Academy of Sciences—National Research Council, Washington 25, D. C.), NRC-59-1-77

[c15] M. Pasternak and T. Sonnino, Israel Atomic Energy Commission Report IA-827, 1963 (unpublished)

[c16] T. Sonnino (private communication)

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Decay Scheme of Rb83

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Decay Scheme of ${Rb}^{83}$