Absolute 1* quantum yields for the ICN A state by diode laser gain versus absorption spectroscopy. Semiannual status report

Technical Report · Thu Jan 01 04:00:00 EST 1987

OSTI ID:6036047

Hess, W P; Leone, S R

Absolute I* quantum yields were measured as a function of wavelength for room temperature photodissociation of the ICN A state continuum. The temperature yields are obtained by the technique of time-resolved diode laser gain-versus-absorption spectroscopy. Quantum yields are evaluated at seven wavelengths from 248 to 284 nm. The yield at 266 nm is 66.0 +/- 2% and it falls off to 53.4 +/- 2% and 44.0 +/- 4% at 284 and 248 respectively. The latter values are significantly higher than those obtained by previous workers using infrared fluorescence. Estimates of I* quantum yields obtained from analysis of CN photofragment rotational distributions, as discussed by other workers, are in good agreement with the I* yields. The results are considered in conjunction with recent theoretical and experimental work on the CN rotational distributions and with previous I* yield results.

• Research Organization: Joint Inst. for Lab. Astrophysics, Boulder, CO (USA)
• OSTI ID: 6036047
• Report Number(s): N-87-27166; NASA-CR-180344; NAS-1.26:180344
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ABSORPTION SPECTRA
CHEMICAL LASERS
DATA
EFFICIENCY
EXPERIMENTAL DATA
HALIDES
HALOGEN COMPOUNDS
INFORMATION
IODIDES
IODINE COMPOUNDS
LASER MATERIALS
LASERS
MATERIALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC IODINE COMPOUNDS
QUANTUM EFFICIENCY
SPECTRA
WAVELENGTHS