Experimental REMPI (Resonance Enhanced Multiphoton Ionization) studies of small molecules
Conference
·
OSTI ID:7077795
Resonance Enhanced Multiphoton Ionization (REMPI) utilizes tunable dye lasers to ionize an atom or molecule by first preparing an excited state by multiphoton absorption and then ionizing that state before it can decay. This process is highly selective with respect to both the initial and resonant intermediate states of the target, and it can be extremely sensitive. In addition, the products of the REMPI process can be detected as needed by analyzing the resulting electrons, ions, fluorescence, or by additional REMPI. This points to a number of exciting opportunities for both basic and applied science. On the applied side, REMPI has great potential as an ultrasensitive, highly selective detector for trace, reactive, or transient species. On the basic side, REMPI affords an unprecedented means of exploring excited state physics and chemistry at the quantum-state-specific level. We shall give an overview together with examples of current studies of excited molecular states to illustrate the principles of and prospects for REMPI. 27 refs., 3 figs.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE, Office of Health and Environmental Research; Office of Naval Research
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 7077795
- Report Number(s):
- CONF-8611131--1; ON: DE87004749
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500 -- Photochemistry
640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
DATA
ELEMENTS
EXPERIMENTAL DATA
HYDROGEN
INFORMATION
IONIZATION
LASER SPECTROSCOPY
MOLECULES
MULTI-PHOTON PROCESSES
NONMETALS
NUMERICAL DATA
PHOTOIONIZATION
RESONANCE
SPECTROSCOPY
400500 -- Photochemistry
640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
DATA
ELEMENTS
EXPERIMENTAL DATA
HYDROGEN
INFORMATION
IONIZATION
LASER SPECTROSCOPY
MOLECULES
MULTI-PHOTON PROCESSES
NONMETALS
NUMERICAL DATA
PHOTOIONIZATION
RESONANCE
SPECTROSCOPY