A source of cold molecular ions for Coulomb explosion imaging

Journal Article · Wed Jul 01 04:00:00 EDT 1992 · Review of Scientific Instruments; (United States)

DOI:https://doi.org/10.1063/1.1143766· OSTI ID:7037905

Graber, T; Zajfman, D; Kanter, E P; Naaman, R; Vager, Z; Zabransky, B J ^[1]

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1. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

A specialized ion source for use in the high voltage terminal of an electrostatic accelerator has been developed to produce vibrationally cold beams of molecular ions. A pulsed valve is used to produce a supersonic expansion of the source gas which is ionized by electron impact near the beginning of the free expansion. Because of the harsh electromagnetic environment in the terminal, special care has been taken to protect the electronic components related to the ion source. The effect of vibrational cooling in the supersonic expansion is demonstrated using Coulomb explosion techniques with a He{sub 2}{sup +} beam.

• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 7037905
• Journal Information: Review of Scientific Instruments; (United States), Journal Name: Review of Scientific Instruments; (United States) Vol. 63:7; ISSN RSINA; ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430301* -- Particle Accelerators-- Ion Sources
ACCELERATORS
BEAM COOLING
CATIONS
CHARGED PARTICLES
COLLISIONS
DATA
ELECTROSTATICS
ENERGY LEVELS
EXCITED STATES
EXPANSION
EXPERIMENTAL DATA
FABRICATION
FLUID FLOW
FLUIDS
GASES
GROUND STATES
HELIUM IONS
INFORMATION
ION COLLISIONS
ION SOURCES
ION-MOLECULE COLLISIONS
IONIZATION
IONS
MOLECULAR IONS
MOLECULE COLLISIONS
NUMERICAL DATA
SUPERSONIC FLOW
VIBRATIONAL STATES