Spectroscopy, reaction, and photodissociation of highly vibrationally excited molecules

Technical Report · Mon Jan 01 04:00:00 EST 1990

OSTI ID:6104805

Crim, F F

This research is designed to determine the nature of highly vibrationally excited molecules, probe unimolecular reactions at the level of individual quantum states, and study the dynamics of electronic photodissociation from highly vibrationally excited states. In our experiments, pulsed laser excitation of a vibrational overtone transition prepares a highly vibrationally excited molecule and time-resolved spectroscopic detection of products monitors their subsequent decomposition. We have used this scheme to follow unimolecular reactions of large and small molecules in both room temperature gases and supersonic expansions and to investigate the role that vibrational excitation plays in electronic photodissociation dynamics. Most recently we have used the localized nature of the highly vibrationally excited states we create to selectively break bonds in photodissociation and biomolecular reactions.

• Research Organization: Wisconsin Univ., Madison, WI (USA)
• Sponsoring Organization: DOE; USDOE, Washington, DC (USA)
• DOE Contract Number: FG02-86ER13500
• OSTI ID: 6104805
• Report Number(s): DOE/ER/13500-T2; ON: DE91008840
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400500 -- Photochemistry
CHEMICAL REACTIONS
DECOMPOSITION
DOCUMENT TYPES
EIGENSTATES
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITED STATES
HYDROGEN COMPOUNDS
LASER RADIATION
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
PROGRESS REPORT
RADIATIONS
VIBRATIONAL STATES
WATER