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Superradiance for the study of gamma ray lasers in a system with a change of angular momentum

Published online by Cambridge University Press:  09 March 2009

Yu. A. Kudenko  and
E. V. Kuz'min
Yu. A. Kudenko
Affiliation:
L. V. Kirensky Institute of Physics, USSR Academy of Science SB Krasnoyarsk, 660036
E. V. Kuz'min
Affiliation:
L. V. Kirensky Institute of Physics, USSR Academy of Science SB Krasnoyarsk, 660036
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Abstract

Radiation of a system of isomer nuclei due to an electromagnetic transition with change of momentum J2–J1 and directly connected to exchange of a magnetic interaction was investigated. Such an interaction may be a magnetic exchange interaction of the Ruderman-Kittel or Sull-Nakamura type as well as any other type of interaction resulting in nuclear ferromagnetism at T<Tc. The initial state of the system is prepared by the quick cooling technique at T lower than Tc, the nuclear ferromagnetic temperature. It is shown that this initial state has a full symmetric wave function (which is the eigenfunction of the whole Hamiltonian as well as operators R2, Rz, J2,JZ) and the maximum value of the cooperation number. This method of initial state preparation in this range of frequencies replaces the π/2-impulse technique in optics. The superradiance intensity of the system from a waveguide is found, assuming |κ| = const for angles from zero to the Bragg angle.

Type
Research Article
Information
Laser and Particle Beams , Volume 3 , Issue 2 , May 1985 , pp. 109 - 118
Copyright
Copyright © Cambridge University Press 1985

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