Title 



Relativistic statistical thermodynamics of dense photon gas
 
Author 



 
Abstract 



We discuss some aspects of interactions of highfrequency electromagnetic waves with plasmas, assuming that the intensity of radiation is sufficiently large, so that the photonphoton interaction is more likely than the photonplasma particle interaction. In the stationary limit, solving the kinetic equation of the photon gas, we derive a distribution function. With this distribution function at hand, we investigate the adiabatic photon selfcapture and obtain the number density of the trapped photons. We employ the distribution function to calculate the thermodynamic quantities for the photon gas. Having expressions of the entropy and the pressure of the photon gas, we define the heat capacities and exhibit the existence of the ratio of the specific heats Gamma, which equals 7/6 for nonrelativistic temperatures. In addition, we disclose the magnitude of the mean square fluctuation of the number of photons. Finally, we discuss the uniform expansion of the photon gas.   
Language 



English
 
Source (journal) 



Physical review : E : statistical, nonlinear, and soft matter physics / American Physical Society.  Melville, N.Y., 2001  2015  
Publication 



Melville, N.Y. : American Physical Society, 2007
 
ISSN 



15393755 [print]
15502376 [online]
 
Volume/pages 



76:1 Part 2(2007), p. 17
 
Article Reference 



016406
 
ISI 



000248552600057
 
Medium 



Eonly publicatie
 
Full text (Publisher's DOI) 


  
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