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Measurement of the ozone absorption cross‐section at the 253.7 nm mercury line
Author(s) -
Mauersberger K.,
Barnes J.,
Hanson D.,
Morton J.
Publication year - 1986
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl013i007p00671
Subject(s) - ozone , absorption cross section , photometer , ultraviolet , mercury (programming language) , solar irradiance , materials science , environmental science , parts per notation , optics , cross section (physics) , atmospheric sciences , meteorology , chemistry , physics , astronomy , organic chemistry , computer science , programming language
The absorption cross‐section of ozone at 253.7 nm is frequently used as a standard for the entire UV wavelength range. The presently accepted value is 1.147 × 10 −17 cm², known with an uncertainty of about 2%. The cross‐section has been recently measured by simultaneously monitoring the ozone pressure, the impurities in the ozone gas, the gas temperature and the UV beam intensity. The cross‐section at room temperature was found to be 1.137 × 10 −17 cm², having an uncertainty of ±.7%. The improved accuracy will aid a number of ozone experiments including the in situ photometers and Solar Backscatter Ultraviolet instruments.