1. Principle of Mössbauer spectrometry

1.1 Nuclear gamma resonance phenomenon. Lamb-Mössbauer factor

The phenomenon of nuclear gamma resonance occurs when a gamma photon emitted by an emitting nucleus S when that nucleus de-excites is absorbed by an identical absorbing nucleus A, which then goes into an excited state (figure 1 ). The spectral distribution of emitted and absorbed photons N (E _γ ) is a Lorentzian of energy width Γ called the natural width of the excited nuclear level : $N (E_{γ}) = \frac{1}{4} [\frac{Γ^{2}}{{(E_{γ} - E_{0})}^{2} + \frac{Γ^{2}}{4}}]$

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Principle of Mössbauer spectrometry

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Bibliography

(1) - - Nuclear Instrument and Methods in Phys. Res. B 76 n ° 1-4, avril 1993 p. 1-448.
(2) - JANOT (C.) - L'effet Mössbauer et ses applications à la physique du solide et à la métallurgie physique. - Masson, Paris, 1972.
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