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Title: Neutron field measurements in phantom with foil-activation methods. Technical report, 29 November 1985-29 November 1986

Abstract

The threshold neutron-foil spectrometry method, utilizing the SAND II spectrum unfolding code, was evaluated by carrying out a measurement in the standard fission-source facility, simultaneous with six (6) in-phantom measurements of neutron spectra. The foil spectrometry was done with the full set of threshold foils, mid-thorax in ER1, where a 2 in. lead wall separated reactor and phantom. A five-foil set was utilized for the phantom mid-head and phantom hip measurements in ER1, as well as for mid-thorax, mid-head and hip in ER2, free field. Calculations of the mid-thorax and mid-head spectra in ER1 and ER2 were carried out, with the source term normalized to nickel foil activations at the reactor entrance window. A simple 5-foil perturbation method for neutron dosimetry, utilizing hand calculations, was developed and evaluated for the ER1 and ER2 spectra. It appears to be the order of 6% accurate versus 3-4% for SAND II, which utilizes the best (calculated) a prior data available for spectral shape information.

Authors:
;
Publication Date:
Research Org.:
Science Applications International Corp., San Diego, CA (USA)
OSTI Identifier:
7198046
Report Number(s):
AD-A-192122/0/XAB; SAIC-85-1090-R
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; FISSION FOIL DETECTORS; NEUTRON DOSIMETRY; NEUTRON SPECTROSCOPY; PHANTOMS; FIELD TESTS; NEUTRONS; NICKEL; PROGRESS REPORT; RADIATION EFFECTS; SHAPE; SPECTRA; BARYONS; DOCUMENT TYPES; DOSIMETRY; ELEMENTARY PARTICLES; ELEMENTS; FERMIONS; HADRONS; MEASURING INSTRUMENTS; METALS; MOCKUP; NEUTRON DETECTORS; NUCLEONS; RADIATION DETECTORS; SPECTROSCOPY; STRUCTURAL MODELS; TESTING; TRANSITION ELEMENTS; 440103* - Radiation Instrumentation- Nuclear Spectroscopic Instrumentation; 654003 - Radiation & Shielding Physics- Neutron Interactions with Matter

Citation Formats

Verbinski, V V, and Cassapakis, C G. Neutron field measurements in phantom with foil-activation methods. Technical report, 29 November 1985-29 November 1986. United States: N. p., 1986. Web.
Verbinski, V V, & Cassapakis, C G. Neutron field measurements in phantom with foil-activation methods. Technical report, 29 November 1985-29 November 1986. United States.
Verbinski, V V, and Cassapakis, C G. 1986. "Neutron field measurements in phantom with foil-activation methods. Technical report, 29 November 1985-29 November 1986". United States.
@article{osti_7198046,
title = {Neutron field measurements in phantom with foil-activation methods. Technical report, 29 November 1985-29 November 1986},
author = {Verbinski, V V and Cassapakis, C G},
abstractNote = {The threshold neutron-foil spectrometry method, utilizing the SAND II spectrum unfolding code, was evaluated by carrying out a measurement in the standard fission-source facility, simultaneous with six (6) in-phantom measurements of neutron spectra. The foil spectrometry was done with the full set of threshold foils, mid-thorax in ER1, where a 2 in. lead wall separated reactor and phantom. A five-foil set was utilized for the phantom mid-head and phantom hip measurements in ER1, as well as for mid-thorax, mid-head and hip in ER2, free field. Calculations of the mid-thorax and mid-head spectra in ER1 and ER2 were carried out, with the source term normalized to nickel foil activations at the reactor entrance window. A simple 5-foil perturbation method for neutron dosimetry, utilizing hand calculations, was developed and evaluated for the ER1 and ER2 spectra. It appears to be the order of 6% accurate versus 3-4% for SAND II, which utilizes the best (calculated) a prior data available for spectral shape information.},
doi = {},
url = {https://www.osti.gov/biblio/7198046}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Nov 29 00:00:00 EST 1986},
month = {Sat Nov 29 00:00:00 EST 1986}
}

Technical Report:
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