Optimization of electrochemical-etching parameters for highly sensitive CR-39 fast neutron dosimeters Metadata

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Title

  • Main Title Optimization of electrochemical-etching parameters for highly sensitive CR-39 fast neutron dosimeters

Creator

  • Author: Gammage, R.B.
    Creator Type: Personal
  • Author: Chowdhury, A.
    Creator Type: Personal

Publisher

  • Name: Oak Ridge National Laboratory
    Place of Publication: Tennessee

Date

  • Creation: 1981-01-01

Language

  • English

Description

  • Content Description: Voltage gradient and frequency were studied for their influence on the electrochemical etching of CR-39 plastic irradiated with fission spectrum, fast neutrons. A power supply having outputs of up to 1.5 kV (rms) and 5 kHz was used. Differential leakage current measurements under non-etching conditions indicated that the optimal values in electrochemical etching would be 20 kV/cm and 1.3 kHz. That these parameters produced a maximum sensitivity was verified in subsequent electrochemical etching experiments with foils that were both unirradiated and irradiated. The introduction of a proton irradiator cover and a conventional etching step prior to the electrochemical etching, increased the sensitivity to neutrons (approx. 30-fold) and decreased the background track density to 4.4 +- 0.6 tracks/cm/sup 2/. The corresponding sensitivity was then 1.3 tracks/cm/sup 2//mrem with a minimum level of detectability (3sigma) of 1.4 mrem.
  • Physical Description: Pages: 14

Subject

  • Keyword: Dosimetry
  • Keyword: Synthetic Materials 440102* -- Radiation Instrumentation-- Radiation Dosemeters
  • Keyword: Baryons
  • Keyword: Petroleum Products
  • Keyword: Fast Neutrons
  • Keyword: Materials
  • Keyword: Optimization
  • Keyword: Hadrons
  • Keyword: Foils
  • Keyword: Surface Finishing
  • Keyword: Nucleons
  • Keyword: Radiation Detectors
  • Keyword: Plastics
  • Keyword: Elementary Particles
  • Keyword: Neutron Dosimetry
  • Keyword: Sensitivity
  • Keyword: Neutrons
  • Keyword: Dielectric Track Detectors
  • Keyword: Petrochemicals
  • Keyword: Fission Neutrons
  • STI Subject Categories: 46 Instrumentation Related To Nuclear Science And Technology
  • Keyword: Etching
  • Keyword: Measuring Instruments
  • Keyword: Fermions
  • Keyword: Readout Systems

Source

  • Conference: 8. DOE workshop on personnel neutron dosimetry, Louisville, KY, USA, 18 Jun 1981

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Other: DE82017538
  • Report No.: CONF-8106182-2
  • Grant Number: W-7405-ENG-26
  • Office of Scientific & Technical Information Report Number: 5219532
  • Archival Resource Key: ark:/67531/metadc1063569

Note

  • Display Note: NTIS, PC A02/MF A01.