Evidence for ion cooling and an observation of ion heating in Cornell EBIS I

Conference · Thu Jun 01 00:00:00 EDT 1989 · AIP Conference Proceedings (American Institute of Physics); (USA)

OSTI ID:7120408

Beebe, E N ^[1]

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1. Department of Nuclear Science, Cornell University, Ithaca, NY 14853 (USA) Engineering, Ward Laboratory, Cornell University, Ithaca, NY 14853 (USA)

Preliminary studies made on the Cornell Electron Beam Ion Source I (CEBIS I) indicate that a cooling of high Z ions through energy exchange with lighter, low charge ions may contribute to longer ion confinement times and production of higher charge state ions than would otherwise be possible without this effect. A DC electron beam propagated at energies less than 3.6 keV, at currents of 20 mA or less. Multiply charged ions were produced in a containment mode and charge state evolution was observed for injected nitrogen, argon, and xenon gases as well as residual gases. The extracted C{sup 5+}, N{sup 6+}, O{sup 7+}, Ar{sup 16+}, and Xe{sup 28+} ions were unambiguously observed by both time of flight (TOF) spectroscopy and by the use of an analyzing bending magnet. In addition, the time dependence of low to moderate charge state ions escaping from the trap, (presumably due to heating) during the confinement period was observed.

• OSTI ID: 7120408
• Report Number(s): CONF-881154-; CODEN: APCPC; TRN: 90-018082
• Journal Information: AIP Conference Proceedings (American Institute of Physics); (USA), Vol. 188:1; Conference: International symposium on electron beam ion sources and their applications, Upton, NY (USA), 14-18 Nov 1988; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ARGON IONS
COOLING
CARBON IONS
ELECTRON BEAM ION SOURCES
NITROGEN IONS
OXYGEN IONS
XENON IONS
BEAM OPTICS
COMPUTERIZED SIMULATION
CONFINEMENT
DATA ACQUISITION SYSTEMS
HEATING
TIME DEPENDENCE
TIME-OF-FLIGHT METHOD
CHARGED PARTICLES
ION SOURCES
IONS
SIMULATION
430301* - Particle Accelerators- Ion Sources