Photodissociation and Photodetachment of Atmospheric Negative Ions.
Abstract
Photodetachment and photodissociation cross section measurements have been made for a wide variety of negative ions considered to be of atomspheric importance at wavelengths of 2484, 3500, (3507 and 3569 combined) 4067, and 4131 anstroms. The ions for which cross sections were measured included 0-, OH-, O2-, O3-, O4-, CO3-, CO4-, NO2-, NO3-, Cl2-, ClO2-, Cl3-, and BrCl2-, as well as hydrates of many of these ions. The photodissociation of CO3- in the region of the threshold near 6550 anstroms was reinvestigated in detail, because of the present controversy concerning the bond energy of this ion. These mesurements more strongly confirmed our previous conclusion that the bond energy of this ion is less than 1.9 eV. All measurements were made using a drift tube mass spectrometer photodestruction apparatus and with a krypton ion laser or a rare gas halogen laser. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1979
- Accession Number
- ADA078091
Entities
People
- G. P. Smith
- J. T. Moseley
- L. C. Lee
- R. V. Hodges
Organizations
- SRI International