Issues

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1999

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February

  

Methodological notes


Can the radiance increase in a noninverted medium?


A.N. Kosygin Moscow State Textile Academy, Malaya Kaluzhskaya str. 1, Moscow, 117918, Russian Federation

The possibility of the brightness and temperature of scattered radiation exceeding the attendant magnitudes for the incident radiation is predicted for the case of a noninverted medium, based on the analysis of radiation transfer equations. The irreversible nature of the process and impossibility of introducing ray approximation are identified as the necessary conditions.

Text can be downloaded in Russian. English translation is available on IOP Science.
PACS: 42.25.−p
DOI: 10.1070/PU1999v042n02ABEH000569
URL: https://ufn.ru/en/articles/1999/2/e/
Citation: Shepelev A V "Can the radiance increase in a noninverted medium?" Phys. Usp. 42 203–204 (1999)
BibTexBibNote ® (generic) BibNote ® (RIS)MedlineRefWorks
TY JOUR
TI Can the radiance increase in a noninverted medium?
AU Shepelev, A. V.
PB Physics-Uspekhi
PY 1999
JO Physics-Uspekhi
JF Physics-Uspekhi
JA Phys. Usp.
VL 42
IS 2
SP 203-204
UR https://ufn.ru/en/articles/1999/2/e/
ER https://doi.org/10.1070/PU1999v042n02ABEH000569

Оригинал: Шепелев А В «Возможно ли увеличение яркости излучения в неинверсной среде?» УФН 169 213–215 (1999); DOI: 10.3367/UFNr.0169.199902f.0213

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