Emission of Mössbauer γ-Rays From Crystals
Coherence effects are of central importance in the emission of Mössbauer γ-rays from crystalline sources. When the source is located within a crystal the emitted photon is coherently diffracted by the surrounding lattice, and the radiation pattern outside the crystal exhibits a set of light and dark Kossel cones, corresponding to the various internal Bragg reflections, whose positions and intensities are determined by the crystal structure. The theory of the Kossel effect for X-rays and its application to crystal structure determinations have been discussed extensively in the literature (1–4). As we shall see however there are important new features arising in the theory and application of the emission of Mössbauer γ-rays from crystals.
KeywordsDestructive Interference Bragg Condition Coherence Effect Soviet Phys Recoilless Fraction
Unable to display preview. Download preview PDF.
- 2.Max von Laue, Rontgenstrahleninterferenzen (Akademische Verlagsgesellschaft, Frankfurt am Main, 1960) pp. 430–448.Google Scholar
- 3.R. W. James, The Optical Principles of the Diffraction of X Rays (Cornell University Press, Ithaca, N.Y., 1965) pp. 413–457.Google Scholar
- 5.G. T. Trammell, Chemical Effects on Nuclear Transformations (International Atomic Energy Agency, Vienna, 1961), Vol. I, p. 75.Google Scholar
- 6.C. Muzikar, Zh. Eksperim. i Teor. Fiz. 41, 1168 (1961) English translation: Soviet Phys.-JETP 14, 833 (1962).Google Scholar
- 7.M. I. Podgoretskii and I. I. Raizen, Zh. Eksperim. i Teor. Fiz. 39, 1473 (1960) English translation: Soviet Phys. — JEPT 12, 1023 (1961).Google Scholar
- 8.D. F. Zaretskii and V. V. Lomonosov, Zh. Eksperim. i Teor. Fiz. 48, 368 (1965) English transl.: Soviet Phys. — JEPT 21, 243 (1965).Google Scholar
- 9.Pham duy Hein, Zh. Eksperim. i Teor. Fiz 58, 145 (1970) English translation: Soviet Phys. — JETP 31, 83 (1970).Google Scholar
- 10.P. A. Alexandrov and Yu. Kagan, Zh. Eksperim. i Teor. Fiz. 59, 1733 (1970) English translation: Soviet Phys. — JETP 32, 942 (1971).Google Scholar
- 15.G. Borrmann, Z. Physik 42, 157 (1941). For a discussion of the x-ray Borrmann effect see Refs. 2 and 3, and also E. P. Ewald, Reviews of Modern Physics 37, 46 (1965).Google Scholar
- 16.See for example L. D. Landau and E. M. Lifshitz, Electrodynamics of a Continuous Media (Addison-Wesley, Inc., 1960) pp. 288–289.Google Scholar
- 17.J. P. Hannon, N. J. Carron, G. T. Trammell, to be published.Google Scholar
- 18.G. T. Trammell, private communication to R. L. Mössbauer and F. Parak, October, 1968.Google Scholar