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The Contribution of Thermal Electron-Positron Pairs to the Thermodynamic Properties of Black-Body Radiation
Istanbul Technical University, Nuclear Energy Institute.ORCID iD: 0000-0002-7431-5115
Istanbul Technical University, Nuclear Energy Institute.
1995 (English)In: Journal of Physics A: Mathematical and General, ISSN 0305-4470, E-ISSN 1361-6447, Vol. 28, no 20, p. 5729-5735Article in journal (Refereed) Published
Abstract [en]

The contribution of thermal electmn-posibon pairs to the thermodynamio propertiesof blackbody radiation (BBR) is considered. This contribution is examined in the vicinity of the temperature corresponding to the electron rest mass energy Te = mec2/k, in which it becomes appreciable. The corection factors are defined as the ratio of extended themdynamic expressions of BBR (which also include the contributions from thermal pairs) to their familiar expressions. Then the variation of these factors with temperame is given. It is shown that while they have the same value for each property in both high and low temperatme regimes (T >> Tc and T << Tc), they have different values about 0.5 Tc. It is found that for BBR, the ratio of the energy density to the pressure has a maximum abaut 0.33 Tc and also the ratio of the specific heats has a minimum about 0.4 Tc.

Place, publisher, year, edition, pages
1995. Vol. 28, no 20, p. 5729-5735
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:uu:diva-380332OAI: oai:DiVA.org:uu-380332DiVA, id: diva2:1299273
Available from: 2019-03-26 Created: 2019-03-26 Last updated: 2019-03-26

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