Plasma momentum meter for momentum flux measurements

Patent · Thu Dec 31 23:00:00 EST 1992

OSTI ID:868900

Zonca, Fulvio ^[1]; Cohen, Samuel A ^[2]; Bennett, Timothy ^[3]; Timberlake, John R ^[4]

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1. Rome, IT
2. Hopewell, NJ
3. Princeton, NJ
4. Allentown, NJ

Invention comprises an instrument in which momentum flux onto a biasable target plate is transferred via a suspended quartz tube onto a sensitive force transducer--a capacitance-type pressure gauge. The transducer is protected from thermal damage, arcing and sputtering, and materials used in the target and pendulum are electrically insulating, rigid even at elevated temperatures, and have low thermal conductivity. The instrument enables measurement of small forces (10.sup.-5 to 10.sup.3 N) accompanied by high heat fluxes which are transmitted by energetic particles with 10's of eV of kinetic energy in a intense magnetic field and pulsed plasma environment.

• Research Organization: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ
• DOE Contract Number: AC02-76CH03073
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 5239563
• OSTI ID: 868900
• Country of Publication: United States
• Language: English

Related Subjects

-5
/376/73/
10
accompanied
arcing
biasable
capacitance-type
comprises
conductivity
damage
electrically
electrically insulating
elevated
elevated temperature
elevated temperatures
enables
energetic
energetic particles
energy
environment
field
flux
fluxes
force
force transducer
forces
gauge
heat
heat flux
instrument
insulating
intense
kinetic
kinetic energy
magnetic
magnetic field
materials
measurement
measurements
meter
momentum
momentum flux
particles
pendulum
plasma
plate
pressure
pressure gauge
protected
pulsed
pulsed plasma
quartz
quartz tube
rigid
sensitive
sputtering
suspended
target
target plate
temperatures
thermal
thermal conductivity
thermal damage
transducer
transducer--a
transferred
transmitted
tube
type pressure
via