Low-pressure water-cooled inductively coupled plasma torch

Patent · Tue Dec 27 04:00:00 EST 1988

OSTI ID:6244160

Seliskar, C J; Warner, D K

An inductively coupled plasma torch is provided which comprises an inner tube, including a sample injection port to which the sample to be tested is supplied and comprising an enlarged central portion in which the plasma flame is confined; an outer tube surrounding the inner tube and containing water therein for cooling the inner tube, the outer tube including a water inlet port to which water is supplied and a water outlet port spaced from the water inlet port and from which water is removed after flowing through the outer tube; and an r.f. induction coil for inducing the plasma in the gas passing into the tube through the sample injection port. The sample injection port comprises a capillary tube including a reduced diameter orifice, projecting into the lower end of the inner tube. The water inlet is located at the lower end of the outer tube and the r.f. heating coil is disposed around the outer tube above and adjacent to the water inlet.

• Assignee: Dept. of Energy, Washington, DC
• Patent Number(s): US 4794230
• OSTI ID: 6244160
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102 -- Fusion Energy-- Plasma Research-- Diagnostics
700205* -- Fusion Power Plant Technology-- Fuel
Heating
& Injection Systems
CONFINEMENT
ELECTRIC COILS
ELECTRICAL EQUIPMENT
EQUIPMENT
LOW PRESSURE
MAGNET COILS
PLASMA CONFINEMENT
PLASMA GUNS
REACTORS
RF SYSTEMS
TUBES
WATER COOLED REACTORS