Time dependence in stimulated gamma-ray emission: Implications for GRASERs |
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Authors: | J C Solem G C Baldwin |
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Institution: | (1) Theoretical Division, Los Alamos National Laboratory, 87545 Los Alamos, NM, USA |
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Abstract: | Summary We discuss the limitations of the cross-section concept in estimating the performance of a GRASER and the implications of
this for evaluating conceptual systems and for experimental detection of stimulated gamma-radiation. We derive the time-dependent
cross-section for stimulating emission of gamma-radiation from a nucleus and show, not only that the asymptotic cross-section
is extremely small for transitions from a long-lived isomeric state to a shorter-lived excited lower state, but also that,
forany transition from a long-lived state, the cross-section remains small compared with its asymptotic value for a time of the
order of the reciprocal linewidth. |
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Keywords: | M?ssbauer effect other γ -ray spectroscopy |
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