Photoelectron studies of multiphoton processes in small molecules
Conference
·
OSTI ID:5775572
- Argonne National Laboratory (ANL), Argonne, IL (United States)
The three photon resonant, four photon ionization (3 + 1) spectra of H₂ via ¹Πu, v' = 0 - 4 levels display strong non-Franck-Condon behavior that is not reproduced by calculations that assume direct excitation from the C ¹Πu Rydberg state into the ionization continuum. Recently, an explanation for this behavior has been proposed that involves an autoionizing, doubly-excited electronic state at the four photon energy. This explanation is examined in light of new (3 + 1) spectra obtained via the C ¹Πu, v' = 5, 6 levels and new (3 + 1) spectra obtained via the C ¹Πu, v' = 0 - 4 levels of D₂. The new data support the explanation based on autoionization of a doubly excited state.
- Research Organization:
- Argonne National Lab., 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:
- 5775572
- Report Number(s):
- CONF-870789--4; ON: DE88002980
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
AUTOIONIZATION
BRANCHING RATIO
DEUTERIUM
ELECTRON SPECTRA
ELEMENTS
ENERGY LEVELS
EXCITED STATES
FRANCK-CONDON PRINCIPLE
HYDROGEN
HYDROGEN ISOTOPES
IONIZATION
ISOTOPES
LIGHT NUCLEI
MOLECULES
MULTI-PHOTON PROCESSES
NONMETALS
NUCLEI
ODD-ODD NUCLEI
ORIENTATION
PHOTOIONIZATION
RYDBERG STATES
SPECTRA
SPIN ORIENTATION
STABLE ISOTOPES
VIBRATIONAL STATES
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
AUTOIONIZATION
BRANCHING RATIO
DEUTERIUM
ELECTRON SPECTRA
ELEMENTS
ENERGY LEVELS
EXCITED STATES
FRANCK-CONDON PRINCIPLE
HYDROGEN
HYDROGEN ISOTOPES
IONIZATION
ISOTOPES
LIGHT NUCLEI
MOLECULES
MULTI-PHOTON PROCESSES
NONMETALS
NUCLEI
ODD-ODD NUCLEI
ORIENTATION
PHOTOIONIZATION
RYDBERG STATES
SPECTRA
SPIN ORIENTATION
STABLE ISOTOPES
VIBRATIONAL STATES