26 September 1997 Gibbs distribution over quasi-energy levels and antiferroelectric phase in thermal gases
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Proceedings Volume 3239, Photon Echo and Coherent Spectroscopy; (1997) https://doi.org/10.1117/12.287684
Event: PECS '97: Photon Echo and Coherent Spectroscopy, 1997, Yoshkar-Ola, Russian Federation
Abstract
Generalization of Gibbs distribution over the quasienergy states of moving molecules is successfully used to describe the thermodynamic properties of antiferroelectric phase transition in an ideal (collisionless) gas of two-level molecules. According to the method, there appears a self- consistent stationary polarization wave which is well agreed with that predicted on the basis of straightforward solution of the optical Bloch kinetic equations. It is found that a novel phase of gaseous crystal of the antiferroelectric type will emerge as a result of weak first order phase transition. Basic thermodynamic properties of this antiferroelectric phase transition are outlined and some estimates for possible experiments in real gases are presented.
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V. V. Kocharovsky, Vl. V. Kocharovsky, V. A. Kukushkin, "Gibbs distribution over quasi-energy levels and antiferroelectric phase in thermal gases", Proc. SPIE 3239, Photon Echo and Coherent Spectroscopy, (26 September 1997); doi: 10.1117/12.287684; https://doi.org/10.1117/12.287684
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