Calibration of the De Pangher Long Counter used as secondary standard for calibration of neutron moderator detectors

Authors

  • Luiz Alexandre Schuch Departamento de Física, Centro de Ciências Naturais e Exatas - CCNE Universidade Federal de Santa Maria - UFSM, Santa Maria, RS.
  • Ivanor Antonio Sachett Comissão Nacional de Energia Nuclear, Rio de Janeiro, RJ.

DOI:

https://doi.org/10.5902/2179460X25403

Abstract

In this work a De Pangher Long Counter used as a secondary standard for calibration of neutron moderador detectors was calibrated.

A 5 Ci Am-Be standard source calibrated for neutron emission rate by the manganese sulfate bath method was used as a primary standard. Due to the cylindrical shape of the standard source an anisotropy factor was determined. The scattering effects were experimentally determined using the shadow cone method and reproducibility tests were also donne.

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References

SCHUCH, L.A., Calibração de Monitores de Neutrons com Moderadores e Aplicação na Determinação de Fatores de Calibração de Dosimetros de Albedo, Tese de Mestrado, IME, Rio de Janeiro (1979).

NACHTIGALL, D., BURGER, G., Dose Equivalent Determinations in Neutron Fields by Means of Moderator Techniques, Topics in Radiation Dosimetry, Academic Press (1972).

DE PANGHER, J., NICHOLS, L.L., A Precision Long Counter for Measuring Fast Neutron Flux Density, BNWL-260, Washington (1966).

HAJNAL, F., McLAUGHLlN, J.E., OECHSLER, R., Technique for Determining Moderated Neutron Instrument Characteristics, HASL 222, New York (1970).

MIJNHEER, B.J., Standard Fluxes and Standard Moderating Counters for Neutron Fluence Measurements, Thesis, Amsterdam (1971).

HUNT, J.B., ROBERTSON, J.C., The Long Counter as a Secondary Standard for Neutron Flux Density, Proc. First Symp. on Neut. Dosim. In Biol. and Med., EUR 4896 (1972).

MASSAND, O.P., Investigation of Some Properties of the Precision Long Counter, EURATOM-Rep. (1972).

SCRAUBE, A., GRUNAUER, F., BURGER, G., Calibration Problems With Neutron Moderator Detectors, Proc. Neut. Monit. for Rad. Prot. Purposes, II, IAEA (1973).

THOMPSON, I.M.G., LAVENDER, A., Calibration of the De Pangher Long Counter, Proc. Neut. Monit. for Rad. Prot. Purposes, II, IAEA (1973).

LINDENBAUM, S.J., Conf. on Shielding of High-Energy Accelerators, TID-7545, New York (1957).

DE PANGHER, J., A Reproducible Precision Polythene Long Counter for Measuring Fast Neutron Flux, Rep. Hanford Lab., Richland, Washington (1961).

MARSHALL, T.O., Some Tests on the Consistency of the Performance of Six Precision Long Counters Intended as Secondary Standards for the Measurement of Fast Neutron Flux Density, Health Phisics, 18, (1979).

REINERT DE LIMA, C.A., PAJMQ - Programa para Ajustamento Automático por Mínimos Quadrados, IME.

Published

1985-12-10

How to Cite

Schuch, L. A., & Sachett, I. A. (1985). Calibration of the De Pangher Long Counter used as secondary standard for calibration of neutron moderator detectors. Ciência E Natura, 7(7), 19–30. https://doi.org/10.5902/2179460X25403