• DocumentCode
    808317
  • Title

    A Technique for Measuring Extremely Low Ionization Chamber Currents Using MOS FET Circuitpry

  • Author

    Rosenblum, Lewis H. ; Bartky, W.S. ; Shaifer, T.R., Jr.

  • Author_Institution
    Picker Corporation Nuclear and Ultrasound Operations North Haven, Connecticut
  • Volume
    20
  • Issue
    1
  • fYear
    1973
  • Firstpage
    221
  • Lastpage
    224
  • Abstract
    A circuit has been developed for an Isotope Calibrator which will accurately measure ionization chamber currents in the order of 10-14 to 10-7amps. The circuit incorporates a self-zeroing feedback network which virtually eliminates drift, as well as high impedance MOS FET switches and a MOS insulated gate FET source follower in the input circuit to minimize errors due to leakage currents.
  • Keywords
    Current measurement; FETs; Feedback circuits; Impedance; Insulation; Ionization chambers; Isotopes; Leakage current; Switches; Switching circuits;
  • fLanguage
    English
  • Journal_Title
    Nuclear Science, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9499
  • Type

    jour

  • DOI
    10.1109/TNS.1973.4326911
  • Filename
    4326911
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=808317