Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Journal of Applied Physics

Kinetics of nuclear super-radiance

George C. Baldwin, Michael S. Feld

Published Jun 1, 1986• 11 citations
Publisher

Abstract

We derive the minimum requirements for super-radiant gamma-ray emission by applying the semiclassical theory of coherent spontaneous emission to the case of nuclear transitions in a crystal host. We find that, if a pure sample of a storage isomer can be rapidly transferred into an inverted population for a recoilless transition, less than 1013 nuclei should suffice for an experimental demonstration of nuclear super-radiance.

DOI
10.1063/1.336747

Related papers

Kinetics of nuclear superradiance

George C. Baldwin, Michael S. Feld

The feasibility of achieving laser action in the gamma radiation range is discussed. The possible mechanisms pumping, and the rapid transfer of active nuclei into the upper laser level are discussed. An analysis of kinetics of superradiant nuclear gamma‐ray emission is given.

AIP conference proceedings•Jan 1, 1986•0 citations

Superradiance: multiatomic coherent emission

Evgeni D. Trifonov

General properties of super-radiance--cooperative spontaneous emission of multi-atomic systems are explained on the basis of some simple models. First we consider spontaneous emission of two atoms separated from each other by a distance less than the wavelength. Then the kinetics of super-radiance of N-atomic system in a small volume are described. The main attention we put into super-radiance photon statistics. We show the Poissonian statistics for the main part of super-radiance pulse and demonstrate the special conditions when it can be Sub-Poissonian one.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Mar 4, 1999•202 citations

Self-amplified spontaneous gamma-ray emission

Задерновский Анатолий Андреевич

We discuss a possibility for obtaining the self-amplified spontaneous emission of gamma radiation in an active medium with hidden population inversion of nuclear states. Hidden inversion appears in cooled nuclear ensembles due to assistance of the nuclear recoil in emission and absorption of gamma quanta. Establishing a hidden inversion allows an amplification of gamma radiation to occur in a particular frequency range without excess of the number of excited nuclei over the number of unexcited nuclei. We formulate a set of requirements to the pumping radiation and to the amplifying nuclear medium crucial to the development of gamma-ray lasing.

Journal of Physics Conference Series•Feb 8, 2013•0 citations

Perturbation theory of super-radiance. I. Super-radiant emission

R Saunders, R. Bullough

Perturbation theory is used to show that that super-radiance as envisaged by Dicke, in which the radiation rate goes as N 2 , the square of the number of atoms, can be interpreted in the same terms as classical diffraction theory. The rate goes as N 2 from samples small in three dimensions compared with a wavelength but goes essentially as N from larger samples. There is a natural distinction between coherent and incoherent contributions to the total radiation rate from larger samples prepared (supposedly by an incident pulse) in Dicke states phased with a vector k.

Journal of Physics A Mathematical Nuclear and General•Sep 1, 1973•10 citations

New sources and applications of super-radiance

M. G. Benedict, A. M. Ermolaev, Viktor A. Malyshev +2 more

This chapter discusses the two sources: the free-electron laser and the electron-hole plasma in semiconductors. It also discusses the atomic nuclei that may super-radiate in the gamma-ray domain may at least in principle be another non-conventional source of super-radiance. The chapter describes an interesting new experiment of De Voe and Brewer, who have directly observed for the first time the effect of two-atom collective emission, just as predicted by R. H. Dicke in 1954 when the whole subject of super-radiance was launched. It then describes the super-radiance effects in synchrotron radiation. The chapter outlines the quantum approach to the problem of free-electron laser. The gamma-ray device is expected to work on a recoilless Mossbauer transition from an excited level pumped from a pure sample of a long-lived isomer. The chapter explains another system that has a continuous energy spectrum and which is a possible source of super-radiance. It is the electron-hole plasma in semiconductors.

CRC Press eBooks•Mar 29, 2018•0 citations

The elementary theory of super-radiance

M. G. Benedict, A. M. Ermolaev, Viktor A. Malyshev +2 more

This chapter considers super-radiance on an elementary level in the sense that the main notions and concepts of the phenomenon will be treated as they evolved in the course of the early studies starting with the classical works by R. H. Dicke. It considers super-radiance from a system with dimensions small compared with the wavelength of the emission that is the Dicke model. The chapter discusses the results to be obtained are also applicable to the single-mode super-radiance of an extended system. It then considers mainly the cooperative spontaneous emission of a collection of N identical atoms confined within a small volume. If the audience wish to investigate the super-radiance of an extended system, the dimensions of which exceed the emission wavelength, the semiclassical method is more convenient. In essence, the semiclassical approach discussed in the chapter combines the quantum mechanical treatment of the atomic system that uses the density matrix formalism with the classical treatment of the radiation field.

CRC Press eBooks•Mar 29, 2018•0 citations
We derive the minimum requirements for super-radiant gamma-ray emission by applying the semiclassical theory of coherent spontaneous emission to the case of nuclear transitions in a crystal host. We find that, if a pure sample of a storage isomer can be rapidly transferred into an inverted population for a recoilless transition, less than 1013 nuclei should suffice for an experimental demonstration of nuclear super-radiance.
General properties of super-radiance--cooperative spontaneous emission of multi-atomic systems are explained on the basis of some simple models. First we consider spontaneous emission of two atoms separated from each other by a distance less than the wavelength. Then the kinetics of super-radiance of N-atomic system in a small volume are described. The main attention we put into super-radiance photon statistics. We show the Poissonian statistics for the main part of super-radiance pulse and demonstrate the special conditions when it can be Sub-Poissonian one.
We discuss a possibility for obtaining the self-amplified spontaneous emission of gamma radiation in an active medium with hidden population inversion of nuclear states. Hidden inversion appears in cooled nuclear ensembles due to assistance of the nuclear recoil in emission and absorption of gamma quanta. Establishing a hidden inversion allows an amplification of gamma radiation to occur in a particular frequency range without excess of the number of excited nuclei over the number of unexcited nuclei. We formulate a set of requirements to the pumping radiation and to the amplifying nuclear medium crucial to the development of gamma-ray lasing.
Perturbation theory is used to show that that super-radiance as envisaged by Dicke, in which the radiation rate goes as N 2 , the square of the number of atoms, can be interpreted in the same terms as classical diffraction theory. The rate goes as N 2 from samples small in three dimensions compared with a wavelength but goes essentially as N from larger samples. There is a natural distinction between coherent and incoherent contributions to the total radiation rate from larger samples prepared (supposedly by an incident pulse) in Dicke states phased with a vector k.
This chapter discusses the two sources: the free-electron laser and the electron-hole plasma in semiconductors. It also discusses the atomic nuclei that may super-radiate in the gamma-ray domain may at least in principle be another non-conventional source of super-radiance. The chapter describes an interesting new experiment of De Voe and Brewer, who have directly observed for the first time the effect of two-atom collective emission, just as predicted by R. H. Dicke in 1954 when the whole subject of super-radiance was launched. It then describes the super-radiance effects in synchrotron radiation. The chapter outlines the quantum approach to the problem of free-electron laser. The gamma-ray device is expected to work on a recoilless Mossbauer transition from an excited level pumped from a pure sample of a long-lived isomer. The chapter explains another system that has a continuous energy spectrum and which is a possible source of super-radiance. It is the electron-hole plasma in semiconductors.
This chapter considers super-radiance on an elementary level in the sense that the main notions and concepts of the phenomenon will be treated as they evolved in the course of the early studies starting with the classical works by R. H. Dicke. It considers super-radiance from a system with dimensions small compared with the wavelength of the emission that is the Dicke model. The chapter discusses the results to be obtained are also applicable to the single-mode super-radiance of an extended system. It then considers mainly the cooperative spontaneous emission of a collection of N identical atoms confined within a small volume. If the audience wish to investigate the super-radiance of an extended system, the dimensions of which exceed the emission wavelength, the semiclassical method is more convenient. In essence, the semiclassical approach discussed in the chapter combines the quantum mechanical treatment of the atomic system that uses the density matrix formalism with the classical treatment of the radiation field.