Angular Distribution of Internal Bremsstrahlung in Orbital-Electron Capture from Polarized Nuclei

R. L. Intemann

doi:10.1103/PhysRevC.3.1

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Angular Distribution of Internal Bremsstrahlung in Orbital-Electron Capture from Polarized Nuclei

R. L. Intemann

Department of Physics, Temple University, Philadelphia, Pennsylvania 19122

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Phys. Rev. C 3, 1 – Published 1 January, 1971

DOI: https://doi.org/10.1103/PhysRevC.3.1

Abstract

The angular distribution of the internal bremsstrahlung accompanying allowed electron-capture transitions is calculated using the theory of Glauber and Martin. It is shown that when Coulomb effects as well as relativistic and screening corrections are taken into account, the asymmetry coefficients associated with the radiative capture of $K$ - and $L$ -shell electrons acquire a dependence on photon energy which is quite pronounced at energies below about $Z α m c^{2}$ . This is quite contrary to the results of previous calculations, which have predicted these coefficients to be energy independent. The present results are found to give much better agreement with recent experimental observations than that obtained with the previous theory.

References (17)

P. Morrison and L. I. Schiff, Phys. Rev. 58, 24 (1940)
L. Madansky and F. Rasetti, Phys. Rev. 94, 407 (1954)
B. Saraf, Bull. Am. Phys. Soc. 29, 24 (1954)
R. J. Glauber and P. C. Martin, Phys. Rev. 104, 158 (1956) P. C. Martin and R. J. Glauber, ibid. 109, 1307 (1958)
J. Zylicz, in Proceedings of the Conference on Electron Capture and Higher Order Processes in Nuclear Decays, Debrecen, Hungary, 1968 (Eötvös Lóránd Physical Society, Budapest, 1968), Vol. 2, p. 123 B. G. Pettersson, in Alpha-, Beta-, and Gamma-Ray Spectroscopy, edited by K. Siegbahn (North-Holland Publishing Company, Amsterdam, The Netherlands, 1965), p. 1575
R. E. Cutkosky, Phys. Rev. 107, 330 (1957)
[4], Sec. 6
S. F. Timashev and V. A. Kaminskii, Zh. Eksperim. i Teor. Fiz. 38, 284 (1960) [transl.: Soviet Phys. — JETP 11, 206 (1960)]
Y. Koh, O. Miyatake, and Y. Watanabe, Nucl. Phys. 32, 246 (1962)
W. D. Brewer and D. A. Shirley, Phys. Rev. Letters 20, 885 (1968)
Omitted endnote
Omitted endnote
Omitted endnote
[4], Sec. 9
W. D. Brewer, University of California Radiation Laboratory Report No. UCRL-19533, 1969 (unpublished)
J. L. Olsen, L. G. Mann, and M. Lindner, Phys. Rev. 106, 985 (1957)
W. D. Brewer, private communication

[c1] P. Morrison and L. I. Schiff, Phys. Rev. 58, 24 (1940)

[c2] L. Madansky and F. Rasetti, Phys. Rev. 94, 407 (1954)

[c3] B. Saraf, Bull. Am. Phys. Soc. 29, 24 (1954)

[c4] R. J. Glauber and P. C. Martin, Phys. Rev. 104, 158 (1956) P. C. Martin and R. J. Glauber, ibid. 109, 1307 (1958)

[c5] J. Zylicz, in Proceedings of the Conference on Electron Capture and Higher Order Processes in Nuclear Decays, Debrecen, Hungary, 1968 (Eötvös Lóránd Physical Society, Budapest, 1968), Vol. 2, p. 123 B. G. Pettersson, in Alpha-, Beta-, and Gamma-Ray Spectroscopy, edited by K. Siegbahn (North-Holland Publishing Company, Amsterdam, The Netherlands, 1965), p. 1575

[c6] R. E. Cutkosky, Phys. Rev. 107, 330 (1957)

[c7] [4], Sec. 6

[c8] S. F. Timashev and V. A. Kaminskii, Zh. Eksperim. i Teor. Fiz. 38, 284 (1960) [transl.: Soviet Phys. — JETP 11, 206 (1960)]

[c9] Y. Koh, O. Miyatake, and Y. Watanabe, Nucl. Phys. 32, 246 (1962)

[c10] W. D. Brewer and D. A. Shirley, Phys. Rev. Letters 20, 885 (1968)

[c11] Omitted endnote

[c12] Omitted endnote

[c13] Omitted endnote

[c14] [4], Sec. 9

[c15] W. D. Brewer, University of California Radiation Laboratory Report No. UCRL-19533, 1969 (unpublished)

[c16] J. L. Olsen, L. G. Mann, and M. Lindner, Phys. Rev. 106, 985 (1957)

[c17] W. D. Brewer, private communication

Physical Review C

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Angular Distribution of Internal Bremsstrahlung in Orbital-Electron Capture from Polarized Nuclei

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