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IDA Gamma-Ray Laser Annual Summary Report (1989): Investigation of the Feasibility of Developing a Laser Using Nuclear Transitions

Bohdan Balko, Irvin W. Kay, John William Neuberger, Gary Herling

Published Apr 1, 1992• 0 citations
OpenAlex

Abstract

This paper generalizes the Haake-Reibold model of superfluorescence to take into account certain effects that, while negligible for atomic emission, are important for the nuclear case. Comparisons are made of three different approaches to numerical computation based on the model, and a number of explicit calculations are made to illustrate the behavior of the emitted pulse under various conditions. In addition, the paper presents detailed analyses of the effects of homogeneous broadening and relaxation on superfluorescent emission.

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Nuclear superfluorescence: A feasibility study based on the generalized Haake-Reibold theory

Bohdan Balko, Irvin W. Kay, J. W. Neuberger

A theory of nuclear superfluorescence (SF) is presented which includes electronic attenuation, competing transitions, homogeneous and inhomogeneous broadening, and finite pumping times. The effects of the nuclear and atomic parameters on the expected emitted SF pulse shape are analyzed in physically realizable regimes. A number of explicit calculations are made to illustrate the behavior of the pulse under various conditions. The feasibility of observing superfluorescence using the 58.59 keV transition in $^{60}\mathrm{Co}$, is examined.

Physical review. B, Condensed matter•Jul 1, 1995•4 citations

IDA gamma-ray laser annual summary report (1990): Investigation of the feasibility of developing a laser using nuclear transitions. Final report, January 1991-March 1992

Bohdan Balko, Irwin W. Kay

This paper compares two processes that can occur, under different conditions, in the same system of nuclei: amplified spontaneous emission (ASE) and superfluorescence (SF). It concludes that the (Trammell and Hannon) conditions for the occurrence of ASE are more restrictive than those for the occurrence of SF. Therefore, the conclusion by some authors based on an analysis of ASE, that coherent electromagnetic emission from a nuclear system is not feasible, is incorrect. The paper examines the feasibility of nuclear SF in 60Co. It concludes that SF will occur in the excited state obtained by thermal neutron pumping with fluxes ranging from 10.18 to 10.23 neutrons per second.

•Apr 1, 1992•0 citations

Stochastic modeling of x-ray superfluorescence

Stasis Chuchurka, Andrei Benediktovitch, Špela Krušič +2 more

An approach to modeling the dynamics of x-ray amplified spontaneous emission and superfluorescence, the phenomenon of collective x-ray emission initiated by intense pulses of x-ray free-electron lasers, is developed based on stochastic partial differential equations. The equations are derived from first principles, and the relevant approximations, derivation steps, and extensions specific to stimulated x-ray emission are presented. The resulting equations take the form of three-dimensional generalized Maxwell-Bloch equations augmented with noise terms for both field and atomic variables. The derived noise terms possess specific correlation properties that enable the correct reconstruction of spontaneous emission. Consequently, the developed theoretical formalism is universally suitable for describing all stages of stimulated x-ray emission: spontaneous emission, amplified spontaneous emission, and superfluorescence. We present numerical examples that illustrate various properties of the emitted field, including spatiotemporal coherence and spectral-angular and polarization characteristics. We anticipate that the proposed theoretical framework will establish a robust foundation for interpreting measurements in stimulated x-ray emission spectroscopy, modeling x-ray laser oscillators, and describing other experiments leveraging x-ray superfluorescence.

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Modeling of gamma-pulse propagation in the optical thick medium with inverted population of the nuclear levels of 178 HF isotope

E. A. Popov, Самарцев Виталий Владимирович, Eugene A. Yanvarev +2 more

The nuclear superfluorescence in the “optical” medium with 178Hf in propagation channel has been modeled. The general equations system describing the nuclear superfluorescence in the “optical” medium has obtained. The numerical simulation in the propagation channel in the “optical” thick medium with 178Hf has been made.

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Apr 20, 2004•0 citations

Stochastic modeling of x-ray superfluorescence

Stasis Chuchurka, Andrei Benediktovitch, Špela Krušič +2 more

An approach to modeling the dynamics of x-ray amplified spontaneous emission and superfluorescence -- the phenomenon of collective x-ray emission initiated by intense pulses of X-ray Free Electron Lasers -- is developed based on stochastic partial differential equations. The equations are derived from first principles, and the relevant approximations, derivation steps, and extensions specific to stimulated x-ray emission are presented. The resulting equations take the form of three-dimensional generalized Maxwell-Bloch equations augmented with noise terms for both field and atomic variables. The derived noise terms possess specific correlation properties that enable the correct reconstruction of spontaneous emission. Consequently, the developed theoretical formalism is universally suitable for describing all stages of stimulated x-ray emission: spontaneous emission, amplified spontaneous emission, and superfluorescence. We present numerical examples that illustrate various properties of the emitted field, including spatio-temporal coherence, spectral-angular and polarization characteristics. We anticipate that the proposed theoretical framework will establish a robust foundation for interpreting measurements in stimulated x-ray emission spectroscopy, modeling x-ray laser oscillators, and describing other experiments leveraging x-ray superfluorescence.

arXiv:2303.00853•Mar 1, 2023•1 citation

Nuclear gamma-ray laser: A comparative analysis of various schemes

Лев Абрамович Ривлин, Задерновский Анатолий Андреевич

Four basic schemes for a nuclear gamma-ray laser (NGL) are analyzed using the “NGL-hyper-bola” as a generalized comparative criterion: solid state Mössbauer scheme; stimulated gamma-emission in cooled ensembles of free nuclei with hidden population inversion of nuclear states; nuclear gamma-ray lasing without inversion; and Bose-Einstein condensate as a hypothetical active medium for NGL.

Laser Physics•Apr 2, 2010•8 citations
This paper generalizes the Haake-Reibold model of superfluorescence to take into account certain effects that, while negligible for atomic emission, are important for the nuclear case. Comparisons are made of three different approaches to numerical computation based on the model, and a number of explicit calculations are made to illustrate the behavior of the emitted pulse under various conditions. In addition, the paper presents detailed analyses of the effects of homogeneous broadening and relaxation on superfluorescent emission.
A theory of nuclear superfluorescence (SF) is presented which includes electronic attenuation, competing transitions, homogeneous and inhomogeneous broadening, and finite pumping times. The effects of the nuclear and atomic parameters on the expected emitted SF pulse shape are analyzed in physically realizable regimes. A number of explicit calculations are made to illustrate the behavior of the pulse under various conditions. The feasibility of observing superfluorescence using the 58.59 keV transition in 60Co^{60}\mathrm{Co}60Co, is examined.
This paper compares two processes that can occur, under different conditions, in the same system of nuclei: amplified spontaneous emission (ASE) and superfluorescence (SF). It concludes that the (Trammell and Hannon) conditions for the occurrence of ASE are more restrictive than those for the occurrence of SF. Therefore, the conclusion by some authors based on an analysis of ASE, that coherent electromagnetic emission from a nuclear system is not feasible, is incorrect. The paper examines the feasibility of nuclear SF in 60Co. It concludes that SF will occur in the excited state obtained by thermal neutron pumping with fluxes ranging from 10.18 to 10.23 neutrons per second.
An approach to modeling the dynamics of x-ray amplified spontaneous emission and superfluorescence, the phenomenon of collective x-ray emission initiated by intense pulses of x-ray free-electron lasers, is developed based on stochastic partial differential equations. The equations are derived from first principles, and the relevant approximations, derivation steps, and extensions specific to stimulated x-ray emission are presented. The resulting equations take the form of three-dimensional generalized Maxwell-Bloch equations augmented with noise terms for both field and atomic variables. The derived noise terms possess specific correlation properties that enable the correct reconstruction of spontaneous emission. Consequently, the developed theoretical formalism is universally suitable for describing all stages of stimulated x-ray emission: spontaneous emission, amplified spontaneous emission, and superfluorescence. We present numerical examples that illustrate various properties of the emitted field, including spatiotemporal coherence and spectral-angular and polarization characteristics. We anticipate that the proposed theoretical framework will establish a robust foundation for interpreting measurements in stimulated x-ray emission spectroscopy, modeling x-ray laser oscillators, and describing other experiments leveraging x-ray superfluorescence.
An approach to modeling the dynamics of x-ray amplified spontaneous emission and superfluorescence -- the phenomenon of collective x-ray emission initiated by intense pulses of X-ray Free Electron Lasers -- is developed based on stochastic partial differential equations. The equations are derived from first principles, and the relevant approximations, derivation steps, and extensions specific to stimulated x-ray emission are presented. The resulting equations take the form of three-dimensional generalized Maxwell-Bloch equations augmented with noise terms for both field and atomic variables. The derived noise terms possess specific correlation properties that enable the correct reconstruction of spontaneous emission. Consequently, the developed theoretical formalism is universally suitable for describing all stages of stimulated x-ray emission: spontaneous emission, amplified spontaneous emission, and superfluorescence. We present numerical examples that illustrate various properties of the emitted field, including spatio-temporal coherence, spectral-angular and polarization characteristics. We anticipate that the proposed theoretical framework will establish a robust foundation for interpreting measurements in stimulated x-ray emission spectroscopy, modeling x-ray laser oscillators, and describing other experiments leveraging x-ray superfluorescence.