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Status of research in gamma-ray lasers

Status of research in gamma-ray lasers This article reviews conceptual devices designed to generate coherent high-quantum-energy radiation by stimulating nuclear transitions in solids; and delineates some of the promising areas of research. Solid state γ-ray lasers can benefit from (1) Mössbauer effect or recoilless emission, which suppresses first-order Doppler broadening, and brings the emitting nuclei close to a common resonant frequency; and (2) Borrmann effect, which suppresses non-resonant scattering and absorption, and may allow a crystal lattice to act as a distributed resonator. I discuss some of the basic physics that governs the performance of conceptual γ-ray lasers, and some of the classic approaches to design. Many of these early schemes were shown to be unworkable decades ago, but re-emerge in different forms generally without attention to the fallacies already revealed. Other schemes have languished for lack of a champion. I also describe some exciting new approaches, particularly those utilizing techniques for suppressing resonant absorption, which can realize gain without a true inversion. Finally, I submit some recommendations for future research. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta Physica Hungarica Series A, Heavy Ion Physics Springer Journals

Status of research in gamma-ray lasers

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Publisher
Springer Journals
Copyright
Copyright © 1998 by Akadémiai Kiadó
Subject
Physics; Nuclear Physics, Heavy Ions, Hadrons
ISSN
1219-7580
eISSN
1588-2675
DOI
10.1007/BF03158344
Publisher site
See Article on Publisher Site

Abstract

This article reviews conceptual devices designed to generate coherent high-quantum-energy radiation by stimulating nuclear transitions in solids; and delineates some of the promising areas of research. Solid state γ-ray lasers can benefit from (1) Mössbauer effect or recoilless emission, which suppresses first-order Doppler broadening, and brings the emitting nuclei close to a common resonant frequency; and (2) Borrmann effect, which suppresses non-resonant scattering and absorption, and may allow a crystal lattice to act as a distributed resonator. I discuss some of the basic physics that governs the performance of conceptual γ-ray lasers, and some of the classic approaches to design. Many of these early schemes were shown to be unworkable decades ago, but re-emerge in different forms generally without attention to the fallacies already revealed. Other schemes have languished for lack of a champion. I also describe some exciting new approaches, particularly those utilizing techniques for suppressing resonant absorption, which can realize gain without a true inversion. Finally, I submit some recommendations for future research.

Journal

Acta Physica Hungarica Series A, Heavy Ion PhysicsSpringer Journals

Published: Aug 13, 2009

References