Observation of unexpected energy levels in molecular hydrogen and ortho-para energy transfer

Journal Article · Mon Jun 04 04:00:00 EDT 1990 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.64.2763· OSTI ID:6850252

Czarnetzki, U; Doebele, H F ^[1]

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1. Institut fuer Laser- und Plasmaphysik, Universitaet Gesamthochschule Essen, D-4300 Essen 1, Federal Republic of Germany (DE)

We report the observation of eight unexpected energy levels close to but clearly different from H{sub 2} {ital B} {sup 1}{Sigma}{sub {ital u}}{sup +} levels. In transitions involving these levels vacuum-ultraviolet transitions terminating in p-H{sub 2} levels are observed subsequent to two-photon {ital Q}(1) excitation {ital X}{sup 1}{Sigma}{sub {ital g}}{sup +}({ital v}{prime}{prime}=0){r arrow}{ital EF} {sup 1}{Sigma}{sub {ital g}}{sup +}({ital v}{prime}=6) of o-H{sub 2}. Several findings indicate that these strange levels may be a manifestation of electronically excited H{sub 4}, which has been discussed in a number of theoretical contributions.

• OSTI ID: 6850252
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 64:23; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
AMPLITUDES
DATA
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY LEVELS
ENERGY TRANSFER
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXPERIMENTAL DATA
FAR ULTRAVIOLET RADIATION
HYDROGEN
INFORMATION
MOLECULES
MULTI-PHOTON PROCESSES
NONMETALS
NUMERICAL DATA
RADIATIONS
S STATES
ULTRAVIOLET RADIATION