Issues

 / 

1999

 / 

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)Medline RefWorks
RT Journal
T1 Can the radiance increase in a noninverted medium?
A1 Shepelev,A.V.
PB Physics-Uspekhi
PY 1999
FD 10 Feb, 1999
JF Physics-Uspekhi
JO Phys. Usp.
VO 42
IS 2
SP 203-204
DO 10.1070/PU1999v042n02ABEH000569
LK https://ufn.ru/en/articles/1999/2/e/

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

© 1918–2019 Uspekhi Fizicheskikh Nauk
Email: ufn@ufn.ru Editorial office contacts About the journal Terms and conditions