Personnel neutron dosimetry using hot, low-frequency electrochemical etching

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We have developed an electrochemical-etch procedure for the processing of large numbers of CR-39 dosimeters. Specially designed Homann-Type chambers can etch up to 24 CR-39 chips, or foils, at one time. In our two-step procedure, the second step, called blow-up, increases the tracks' size and makes them relatively uniform. The energy response is fairly flat from approx.150 keV to 4.5 MeV, but drops by about a factor of three in the 13 to 16 MeV range. The sensitivity of the dosimetry system is 6 tracks/mrem with a background of 8 mrem, giving a lower limit of sensitivity of approximately 10 ... continued below

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Pages: 5

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Hankins, D.E.; Homann, S.G. & Davis, J.M. September 19, 1985.

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Description

We have developed an electrochemical-etch procedure for the processing of large numbers of CR-39 dosimeters. Specially designed Homann-Type chambers can etch up to 24 CR-39 chips, or foils, at one time. In our two-step procedure, the second step, called blow-up, increases the tracks' size and makes them relatively uniform. The energy response is fairly flat from approx.150 keV to 4.5 MeV, but drops by about a factor of three in the 13 to 16 MeV range. The sensitivity of the dosimetry system is 6 tracks/mrem with a background of 8 mrem, giving a lower limit of sensitivity of approximately 10 mrem for the dosimeter (when three foils are used). Because greater numbers of CR-39 foils can be accommodated at any one time, our procedure is quite efficient for operations with large numbers of dosimeters to be processed. 12 refs., 6 figs., 3 tabs.

Physical Description

Pages: 5

Notes

NTIS, PC A02/MF A01.

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  • 13. international conference on solid state nuclear track detectors, Rome, Italy, 23 Sep 1985

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  • Other: DE86001561
  • Report No.: UCRL-92652
  • Report No.: CONF-850933-2
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 5028076
  • Archival Resource Key: ark:/67531/metadc1057999

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • September 19, 1985

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  • Jan. 22, 2018, 7:23 a.m.

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  • Jan. 31, 2018, 6:34 p.m.

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Hankins, D.E.; Homann, S.G. & Davis, J.M. Personnel neutron dosimetry using hot, low-frequency electrochemical etching, article, September 19, 1985; California. (digital.library.unt.edu/ark:/67531/metadc1057999/: accessed April 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.