TOOL neutron logging, the available sources and the target, with the addition of deuterium-tritium GAS

摘要

FIELD: physics.;SUBSTANCE: neutron logging tool has a neutron generator including a mixture of deuterium gas and tritium gas selected to generate a desired output ratio of 2.45 MeV and 14 MeV neutrons, said ratio ranging from 10:1 to 2:1; at least two neutron detectors spaced from said neutron generator.;EFFECT: high radiation safety when using the device.;21 cl, 13 dwg