ULTRAVIOLET ABSORPTION CROSS SECTIONS OF HO2NO2 VAPOR

The ultraviolet absorption cross sections for gas phase HO2NO2 have been measured between 190 and 330 nm, at 298K and 1 atm total pressure. The HO2NO2 vapor was prepared in a flowing N2 stream in the presence of H2O, H2O2, HNO3, and NO2. The composition of the mixture was established by visible and infrared absorption spectroscopy and by chemical titration after absorption in aqueous solutions. The experimental uncertainty (one standard deviation) ranges from 5% at 200 nm to 30% at 330 nm, and mainly falls in the 10% range. The solar photodissociation rate in the troposphere and lower stratosphere is estimated to be about ten to the -5th power/sec for 0 deg solar zenith angle.

  • Corporate Authors:

    University of California, Irvine

    Irvine, CA  United States 

    Federal Aviation Administration

    William J. Hughes Technical Center, Airport Technology Research and Development Branch
    Atlantic City International Airport
    Atlantic City, NJ  United States  08405
  • Authors:
    • MOLINA, L T
    • MOLINA, M J
  • Publication Date: 1980-4

Media Info

  • Pagination: 33 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00314411
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FAA/EE-80-07
  • Contract Numbers: DOT-FA78WA-4248
  • Files: NTIS, USDOT
  • Created Date: Sep 16 2002 12:00AM