METHOD FOR OPERATING A PULSED NEUTRON GENERATOR TUBE WHICH EXTENDS THE LIFETIME OF A CATHODE

METHOD FOR OPERATING A PULSED NEUTRON GENERATOR TUBE WHICH EXTENDS THE LIFETIME OF A CATHODE

A method for operating a pulsed neutron generator including an ionizer with an electron emitting cathode and a grid wherein the cathode and grid are disposed in a sealed chamber. At least one of the following is applicable to the ionizer; a distance between the cathode and the grid, a cathode curren...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: VILDE, LOIC, PERKINS, LUKE, CHIROVSKY, LEO, REIJONEN, JANI
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CONVERSION OF CHEMICAL ELEMENTS
DETECTING MASSES OR OBJECTS
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
NUCLEAR ENGINEERING
NUCLEAR PHYSICS
PHYSICS
RADIOACTIVE SOURCES
TESTING
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Beschreibung
Zusammenfassung:A method for operating a pulsed neutron generator including an ionizer with an electron emitting cathode and a grid wherein the cathode and grid are disposed in a sealed chamber. At least one of the following is applicable to the ionizer; a distance between the cathode and the grid, a cathode current and/or a potential on the grid are selected such that the ionizer operates at most about one-half the space charge limited current for a grid current selected to provide a predetermined amount of neutron production.