Accession Number:

ADA230111

Title:

Photochemical Preparation and Spectroscopic Characterization of H4 and Its Decay Products

Descriptive Note:

Final rept. 16 Mar 1987-15 Sep 1990,

Corporate Author:

CALIFORNIA UNIV BERKELEY DEPT OF CHEMISTRY

Personal Author(s):

• Moore, C. B.
• Lee, Y. T.
• Kung, A. H.

Report Date:

1990-11-01

Pagination or Media Count:

47.0

Abstract:

Three areas of investigation on H4 and its decay products are described a Studies of the effects of rotational and vibrational excitation on the rate of electronic quenching via the maximum ionicity excited state MIES for the system H2 B He, and on the rates for angular momentum reorientation for H2B in collision with HE, Ne, Ar and molecular hydrogen are reported b A highly sensitive scheme for state-to-state detection of H2 and an intense pulsed hydrogen cluster source were developed in an extensive but unsuccessful search for high-lying Rydberg states of the H4 moiety c Results of a systematic investigation made to resolve rotational structures in the vibrational spectra of H5 H2 molecules solvated in a H3 core show that additional work is required in order to obtain definitive identification of the rotational structures.

Descriptors:

• *ELECTRONICS
• PREPARATION
• PHOTOCHEMICAL REACTIONS
• MOLECULES
• DECAY
• STRUCTURES
• SENSITIVITY
• QUENCHING
• HYDROGEN
• ROTATION
• VIBRATION
• EXCITATION

Subject Categories:

• Physical Chemistry
• Quantum Theory and Relativity

Distribution Statement:

APPROVED FOR PUBLIC RELEASE