Accession Number:

ADA235217

Title:

Studies of Resonantly Enhanced Multiphoton Ionization Processes in Molecules

Descriptive Note:

Final rept. 1 Nov 1986-31 May 1990

Corporate Author:

CALIFORNIA INST OF TECH PASADENA

Personal Author(s):

• McKoy, Vincent

Report Date:

1991-04-01

Pagination or Media Count:

36.0

Abstract:

Studies were completed of several Resonance Enhanced Multiphoton Ionization REMPI processes in molecules. The overall objective of this effort was to provide a robust theoretical analysis and prediction of the key spectral features associated with various experimental and technology applications of this technique including its use for state-specific detection and production of species and for diagnostics in combustion and processing plasmas. Specific achievements of this research included 1 studies of ion vibrational distributions produced by REMPI with emphasis on anomalous behavior in these distributions in molecules and molecular fragments, e.g. OH and CF 2 ion rotational distributions that results from REMPI, the underlying dynamics of these processes, and the identification of schemes for enhancing state selectivity in these distributions 3 use of photoelectron angular distributions produced by REMPI to probe molecular alignment, an important dynamical feature in gas-surface collisions and molecular fragmentation.

Descriptors:

• *IONS
• PHOTOELECTRONS
• PROBES
• VIBRATION
• PRODUCTION
• FRAGMENTATION
• DISTRIBUTION
• DYNAMICS
• MOLECULES
• PROCESSING
• PLASMAS(PHYSICS)
• THEORY
• ALIGNMENT
• IDENTIFICATION
• COMBUSTION
• SPECTRA
• BEHAVIOR
• PHOTOIONIZATION
• ROTATION
• FRAGMENTS
• ANGLES
• ANOMALIES

Subject Categories:

• Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE