Oriented molecule beams: focused beams of rotationally cold polar polyatomic molecules
Journal Article
·
· J. Phys. Chem.; (United States)
Pulsed, supersonic beams of polar polyatomic molecules are focused and oriented via the electrostatic hexapole technique. Essentially pure rotational state selection has been achieved for all prolate symmetric tops. Examples are shown for CH/sub 3/F and CH/sub 3/CN, with fully resolved states divides JKM > = 111, 212, 313, etc. Partial resolution (with some overlapping of peaks) is obtained for oblate tops CF/sub 3/H and CCl/sub 3/H. Rotationally structured (but not fully resolved or analyzed) focusing curves are presented for (CH/sub 3/)/sub 3/CCl and H/sub 3/CCl/sub 3/, for the asymmetric tops CH/sub 2/Cl/sub 2/, CH/sub 3/NO/sub 2/, and CD/sub 3/OD, and for NH/sub 3/. Pure rotational state selection has been achieved for OCS, presumably via the l-doubling effect in the first excited bending vibrational state. Sharp focusing of BrCN is also observed, implying the availability of oriented cyanogen halides for future crossed-beam reactive asymmetry experiments.
- Research Organization:
- Univ. of California, Los Angeles
- OSTI ID:
- 5852256
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 91:21; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
640304 -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
AMMONIA
BEAM ANALYZERS
BEAMS
CHLORINATED ALIPHATIC HYDROCARBONS
CYANIDES
DATA
DEUTERIUM COMPOUNDS
ELECTROSTATIC ANALYZERS
ENERGY LEVELS
EXCITED STATES
EXPERIMENTAL DATA
FLUID FLOW
FLUORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
HEXAPOLES
HYDRIDES
HYDROGEN COMPOUNDS
INFORMATION
MOLECULAR BEAMS
MULTIPOLES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
POLARIZATION
ROTATIONAL STATES
SUPERSONIC FLOW
400201* -- Chemical & Physicochemical Properties
640304 -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
AMMONIA
BEAM ANALYZERS
BEAMS
CHLORINATED ALIPHATIC HYDROCARBONS
CYANIDES
DATA
DEUTERIUM COMPOUNDS
ELECTROSTATIC ANALYZERS
ENERGY LEVELS
EXCITED STATES
EXPERIMENTAL DATA
FLUID FLOW
FLUORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
HEXAPOLES
HYDRIDES
HYDROGEN COMPOUNDS
INFORMATION
MOLECULAR BEAMS
MULTIPOLES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
POLARIZATION
ROTATIONAL STATES
SUPERSONIC FLOW