The Mössbauer effect was discovered using the decay of the 0.12939 MeV second excited state of 19'Ir. The lifetime of this isomer is 0.13 ns. (a) Compute the width I' of this level. (b) Compute the recoil energy of a free 19' Ir atom that emits the 0.12939 MeV photon. (c) Resonant (recoilless) absorption occurs when 19' Ir is bound into a lattice. If a Doppler shift equal to I' destroys the resonance absorption, show that the Doppler velocity v necessary is given by
The Mössbauer effect was discovered using the decay of the 0.12939 MeV second excited state of 19'Ir. The lifetime of this isomer is 0.13 ns. (a) Compute the width I' of this level. (b) Compute the recoil energy of a free 19' Ir atom that emits the 0.12939 MeV photon. (c) Resonant (recoilless) absorption occurs when 19' Ir is bound into a lattice. If a Doppler shift equal to I' destroys the resonance absorption, show that the Doppler velocity v necessary is given by
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Transcribed Image Text:The Mössbauer effect was discovered using the decay of the 0.12939 MeV second
excited state of 19'Ir. The lifetime of this isomer is 0.13 ns. (a) Compute the width I' of
this level. (b) Compute the recoil energy of a free 19' Ir atom that emits the 0.12939 MeV
photon. (c) Resonant (recoilless) absorption occurs when 19' Ir is bound into a lattice. If a
Doppler shift equal to I' destroys the resonance absorption, show that the Doppler velocity
v necessary is given by
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