US 12,408,258 B2
Hot cathode for an ion source of a neutron generator
Zilu Zhou, Needham, MA (US); Weijun Guo, Houston, TX (US); and Lesley Allison Fessler, Spring, TX (US)
Assigned to HALLIBURTON ENERGY SERVICES, INC., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on May 8, 2023, as Appl. No. 18/144,500.
Prior Publication US 2024/0381521 A1, Nov. 14, 2024
Int. Cl. H05H 3/06 (2006.01)
CPC H05H 3/06 (2013.01) 18 Claims
OG exemplary drawing
 
1. A neutron generator comprising:
an ion source for generating neutrons for neutron logging downhole in a wellbore, wherein the ion source includes:
a hot cathode;
at least one cylindrical sleeve coupled to an exterior surface of the hot cathode;
at least one electrode coupled to an interior surface of the neutron generator; and
at least one mounting flange, wherein a proximal end of the at least one mounting flange is coupled to the at least one cylindrical sleeve and a distal end of the at least one mounting flange is coupled to the at least one electrode, further wherein the at least one cylindrical sleeve comprises a first cylindrical sleeve and a second cylindrical sleeve that is concentric to the first cylindrical sleeve, wherein the first cylindrical sleeve is coupled to the exterior surface of the hot cathode and the second cylindrical sleeve is coupled to the proximal end of the at least one mounting flange.