Effect of impurities on the measurement of tritium with ionization chambers
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Effect of impurities on the measurement of tritium with ionization chambers

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Published by Ontario Hydro in Mississauga, Ontario .
Written in English

Subjects:

  • Tritium -- Measurement.,
  • Ionization chambers.

Book details:

Edition Notes

StatementL. Rodrigo and D. Yin.
ContributionsYin, D., Canadian Fusion Fuels Technology Project.
Classifications
LC ClassificationsTD196.T74 R64 1993
The Physical Object
Paginationii, 44 p. :
Number of Pages44
ID Numbers
Open LibraryOL14733334M

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A certified health physicist since , he has served on the American Board of Health Physics, and since , he has been a member of the National Council on Radiation Protection and Measurements’ Program Area Committee 2, which provides guidance for radiation safety in occupational settings for a variety of industries and activities.   Jesse effect caused by impurities in helium might enhance the output signal significantly in tritium measurements with ionization chamber, which will lead to overestimation of tritium concentration in experiments. A theoretical method was proposed to evaluate Jesse effect quantitatively. Results indicate that besides Penning ionization, sub-excitation electrons also place very important Cited by: 3. The detection and measurement of radiation by means of ionization chambers involves a very simple process. When radiation interacts with gaseous matter, ionization of the gas molecules occurs. If the ions or electrons so produced are collected on an insulated probe, the collected charge represents an electrical voltage or by: 5. (). Tritium Measurement and Monitoring in Experimental and Process Systems with Ionization Chambers. Fusion Technology: Vol. 21, Proceedings of the Fourth National Topical Meeting on Tritium Technology In Fission, Fusion, And Isotopic Applications Albuquerque, New Mexico September 29–October 4, , pp.

Recombination Effects. Germinate or Initial Recombination. Columnar Recombination. The Box Model. Recombination with Impurities. Example of Ionization Chamber Application: The α-Cell. The α-Cell. Charge Measurement with the α-Cell. Examples of Pollution Tests Using the α-Cell. Proportional Counters. Avalanche Multiplication. Evaluation of Ionization Chamber Effective Point of Measurement Iran J Med Phys, Vol. 10, No. 3, Summer range of ion chambers and found that errors of up to mm could occur for certain chamber designs [11]. Wang and Rogers expressed that the values of Pdis for cylindrical chambers in photon beams that are reported in AAPM protocol are. Separate measurements of ionization current as a function of voltage 1=I as a function of 1=V to determine true saturation current Jaroslav Adam (CTU, Prague) DPD_03, Ionization chambers Version 2 . Ionization chambers –Radiation survey meters –Dosimeters (dose calibrator) introduction of “compensating” impurities that donate electrons to fill electron traps caused by other impurities. Rad. Detect & Measure, (TKL) Effects of Pulse Pileup From: Physics in Nuclear Medicine (Sorenson and Phelps).

  While less than 1 min is taken to recover to background level of the ionization chamber after exposing in tritium in HTO form at *10 8 Bq/m 3 about 1 h. Therefore, the improved ionization chamber is suitable for tritium in-line measurements inpile tritium extraction experiments which might last several days one round.   Jesse effect caused by impurities in helium might enhance the output signal significantly in tritium measurements with ionization chamber, which will lead to overestimation of tritium concentration in experiments. A theoretical method was proposed to evaluate Jesse effect quantitatively. Jesse effect caused by impurities in helium might enhance the output signal significantly in tritium measurements with ionization chamber, which will lead to overestimation of tritium. IONIZATION CHAMBERS:PAGE 6 TELEPHONE () SPECIFYING IONIZATION CHAMBERS OTC manufactures a wide variety of single, dual or multiple ionization chambers in sizes from 10 cc to 8 liters. Ionization chambers are available in versions with wire grids (for low plate-out), perforated walls, or as otherwise required.