4 MICRON BAND RADIATION FROM HIGH TEMPERATURE AIR
Abstract
Experimental measurements are reported on high temperature air and other gases to establish the source of a band of radiation observed at 4.0 microns. Both a 1 atm arc jet and a shock tube were used to provide a temperature range of 5400-8000K in air. Experiments established that the radiation was not due to common impurities, and that both O2 and N2 are necessary for its appearance. Measurements made on the arc facility with 60A resolution showed definite structure and indicate that the radiation is a compact molecular band. The arc and shock tube data can be correlated by assuming that the radiation originates from NO with an excitation energy of about 8 eV. Attempts to identify the band with a transition between known Rydberg states of NO were unsuccessful, but a possibility exists that the transition could occur because of an interaction between certain Rydberg and non-Rydberg states.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1969
- Accession Number
- AD0682506
Entities
People
- K. L. Wray
- R. L. Taylor