Accession Number:

ADA188495

Title:

Instrumentation for Collisional Energy Transfer Studies.

Descriptive Note:

Final rept. 15 Jul 86-14 Jul 87,

Corporate Author:

WISCONSIN UNIV-MADISON DEPT OF CHEMISTRY

Personal Author(s):

• Crim, F. F.

Report Date:

1987-10-27

Pagination or Media Count:

4.0

Abstract:

Two dye laser systems were purchased for use in energy transfer studies and in unimolecular decomposition experiments. Individual angular momentum states of acetylene in the fourth vibrational state of the CH stretching mode were prepared. It was found that these molecules which contain 10,000 wave numbers of vibrational energy relax at several times the gas kinetic collision rate. There is a striking dependence on the initial rotational state excited implying relaxation of only relatively small amounts of rotational energy. Keywords Molecular energy transfer, Vibrational energy transfer.

Descriptors:

• *ACETYLENE
• *LASER PUMPING
• *MOLECULAR VIBRATION
• *PHOTODECOMPOSITION
• COLLISIONS
• DECOMPOSITION
• DYE LASERS
• ENERGY
• ENERGY TRANSFER
• GASES
• REACTION KINETICS
• MOLECULAR ROTATION

Subject Categories:

• Atomic and Molecular Physics and Spectroscopy
• Radiation and Nuclear Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE