Photochemical generation of the optoacoustic effect: (Performance report), April 1985-October 1987. [Effect of D/sub 2/ in H/sub 2/-Cl/sub 2/ reaction]

Technical Report · Thu Oct 01 04:00:00 EDT 1987

OSTI ID:5973691

Diebold, G J

The theory of the inverse optoacoustic effect for a two-level gas is given. For molecules, a model is constructed based on the harmonic oscillator. Experiments were done on gases (CO, CH/sub 4/, SF/sub 6/, CO/sub 2/, C/sub 3/H/sub 6/, C/sub 2/H/sub 4/) to test the temperature dependence of the acoustic signals. The mechanism for sound production in gases at high concentrations is next considered. The range of the theory is extended into the regime where analyte concentrations are high and heat conduction becomes important. Heat conduction effects in optoacoustic spectroscopy are next considered. Sall's equation is solved, and experiments were done. Isotope effects in the H/sub 2/-Cl/sub 2/ and D/sub 2/-Cl/sub 2/ reactions were measured using the optoacoustic effect. Results show that the effect permits studies of slight changes in parameters on a time scale fast compared with the reaction. (DLC)

• Research Organization: Brown Univ., Providence, RI (USA). Dept. of Chemistry
• DOE Contract Number: FG02-84ER13235
• OSTI ID: 5973691
• Report Number(s): DOE/ER/13235-T2; ON: DE88001410
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
400500* -- Photochemistry
CHEMICAL REACTIONS
CHLORINE
DEUTERIUM
ELEMENTS
ENERGY TRANSFER
EQUATIONS
FLUIDS
GASES
HALOGENS
HEAT TRANSFER
HYDROGEN
HYDROGEN ISOTOPES
ISOTOPE EFFECTS
ISOTOPES
LIGHT NUCLEI
MOLECULES
NONMETALS
NUCLEI
ODD-ODD NUCLEI
PHOTOACOUSTIC EFFECT
PHOTOACOUSTIC SPECTROSCOPY
QUANTITY RATIO
SPECTROSCOPY
STABLE ISOTOPES
TEMPERATURE DEPENDENCE
THERMAL CONDUCTION