Acquisition of Laser and Signal Processing Equipment
Abstract
A four-wave mixing technique using magnesium vapor has been used to provide tunable radiation in the 140-160 nm region. Two photons from one of the excimer-pumped dye laser are used to populate the 3s3d level in Mg, while a second, tunable photon derived from the other excimer-pumped dye laser is used to stimulate Raman gain in the vacuum ultraviolet. We have recently used these techniques to study the photo-dissociations of glyoxal, as described in detail in the preprint, and of OCS, described briefly here. A KrCl excimer laser at 222-nm was used to dissociate OCS in a molecular beam, while our tunable vacuum ultraviolet laser was used to probe the CO and sulfur products by laser-induced fluorescence. The results show that both S((3)P) and S((1)D) are produced, that all of the CO is formed in its lowest vibrational level, and that the CO(v=)0 rotational distribution is extremely inverted; the rotational levels have roughly a Gaussian distribution centered at J=57. (rrh)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 10, 1985
- Accession Number
- ADA216821
Entities
People
- Edward R. Grant
- J. R. Wiesenfeld
- P. L. Houston
Organizations
- Cornell University