High voltage supply for neutron tubes in well logging applications

Humphreys, D Russell

Title: High voltage supply for neutron tubes in well logging applications

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Abstract

A high voltage supply is provided for a neutron tube used in well logging. The "biased pulse" supply of the invention combines DC and "full pulse" techniques and produces a target voltage comprising a substantial negative DC bias component on which is superimposed a pulse whose negative peak provides the desired negative voltage level for the neutron tube. The target voltage is preferably generated using voltage doubling techniques and employing a voltage source which generates bipolar pulse pairs having an amplitude corresponding to the DC bias level.

Inventors:

Humphreys, D Russell ^[1]

Albuquerque, NM

Issue Date:: 1989-01-01

Research Org.:: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)

OSTI Identifier:: 866858

Patent Number(s):: 4808368

Assignee:: United States of America as represented by United States (Washington, DC)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS

G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION

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G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
G01V5/00 - Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity

G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION
G01T1/18 - with counting-tube arrangements, e.g. with Geiger counters

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DOE Contract Number:: AC04-76

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: voltage; supply; neutron; tubes; logging; applications; provided; tube; biased; pulse; combines; dc; techniques; produces; target; comprising; substantial; negative; bias; component; superimposed; peak; provides; desired; level; preferably; generated; doubling; employing; source; generates; bipolar; pairs; amplitude; corresponding; negative voltage; bipolar pulse; voltage supply; voltage source; dc bias; voltage level; negative peak; preferably generated; neutron tube; /376/250/307/315/

Citation Formats


                    Humphreys, D Russell. High voltage supply for neutron tubes in well logging applications.  United States: N. p., 1989. 
        Web.

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                    Humphreys, D Russell. High voltage supply for neutron tubes in well logging applications.  United States.

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                    Humphreys, D Russell. Sun .  
        "High voltage supply for neutron tubes in well logging applications".  United States.  https://www.osti.gov/servlets/purl/866858.

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@article{osti_866858,

  title        = {High voltage supply for neutron tubes in well logging applications},

  author       = {Humphreys, D Russell},

  abstractNote = {A high voltage supply is provided for a neutron tube used in well logging. The "biased pulse" supply of the invention combines DC and "full pulse" techniques and produces a target voltage comprising a substantial negative DC bias component on which is superimposed a pulse whose negative peak provides the desired negative voltage level for the neutron tube. The target voltage is preferably generated using voltage doubling techniques and employing a voltage source which generates bipolar pulse pairs having an amplitude corresponding to the DC bias level.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1989},

  month        = {1}

}

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