Lithium fluoride ion source experiments on PBFA II

Lithium fluoride ion source experiments on PBFA II

Lithium fluoride, field-enhanced ion source experiments are being performed on PBFA II. The source consists of a thin coating of LiF on a microscopically rough substrate. Diagnostics to measure ion beam energy, purity, and transport include electrical monitors, Faraday cups, nuclear activation, ion...

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Hauptverfasser: Bieg, K.W., Pregenzer, A.L., Woodworth, J.R., Lockner, T.R., Johnson, D.J., Gerber, R.A., Bailey, J.E., Kensek, R.P., Leeper, R.J., Maenchen, J.E., Mehlhorn, T.A., Olson, R.E., Ruiz, C.L., Stygar, W.A.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALKALI METAL COMPOUNDS
BEAM TRANSPORT
BEAMS
DESIGN
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
ION BEAMS
ION SOURCES
LITHIUM COMPOUNDS
LITHIUM FLUORIDES
LITHIUM HALIDES
MAGNETIC FIELDS
MEASURING METHODS
NUCLEAR REACTIONS
NUCLEOSYNTHESIS
PARTICLE BEAMS
SUBSTRATES
SYNTHESIS 700101 > Fusion Energy-- Plasma Research-- Confinement, Heating, & Production
THERMONUCLEAR REACTIONS
TIME MEASUREMENT
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Beschreibung
Zusammenfassung:Lithium fluoride, field-enhanced ion source experiments are being performed on PBFA II. The source consists of a thin coating of LiF on a microscopically rough substrate. Diagnostics to measure ion beam energy, purity, and transport include electrical monitors, Faraday cups, nuclear activation, ion pinhole camera, Rutherford magnetic spectrograph, and shadowbox aperture array. With PBFA II operating at three-quarters energy, the source has produced 16 TW of ion power and 550 kJ of ion energy with 70% diode efficiency. Over 26 kJ of lithium beam energy has been focused to the diode center axis with a peak energy density of about 1.3 kJ/cm{sup 2} . PICDIAG simulations of the lithium focus indicate the intrinsic source divergence is about 45 mrad with a 20-{mu}m-grade porous stainless-steel substrate.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.1141250