Determination of a source in a box with two detectors. I. Non-absorbing media

O. Presler; O. Pelled; U. German; Y. Leichter; Z. B. Alfassi

doi:10.1016/S0168-9002(02)00507-7

Determination of a source in a box with two detectors. I. Non-absorbing media

O. Presler, O. Pelled, U. German, Y. Leichter, Z. B. Alfassi

Unit of Nuclear Engineering

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

It was found that the activity and the position of a radioactive point source (hot spot) in a large box containing low absorbing material can be measured accurately using two NaI(Tl) gamma-ray detectors at the opposite sides of the box i.e. at 180° one to another. The harmonic mean of the count rates square roots measured with the two detectors was found to be independent of the hot spot position and depends only on the source activity, the box size and the gamma-rays energy. The activity of the radioactive point source can be calculated from the above-mentioned mean. The position of the point source can be calculated from the ratio of the two detectors count rates.

Original language	English
Pages (from-to)	314-325
Number of pages	12
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	491
Issue number	1-2
DOIs	https://doi.org/10.1016/S0168-9002(02)00507-7
State	Published - 21 Sep 2002

Keywords

A source in a box
Unknown radioactive sources
Virtual point detectors

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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10.1016/S0168-9002(02)00507-7

Cite this

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abstract = "It was found that the activity and the position of a radioactive point source (hot spot) in a large box containing low absorbing material can be measured accurately using two NaI(Tl) gamma-ray detectors at the opposite sides of the box i.e. at 180° one to another. The harmonic mean of the count rates square roots measured with the two detectors was found to be independent of the hot spot position and depends only on the source activity, the box size and the gamma-rays energy. The activity of the radioactive point source can be calculated from the above-mentioned mean. The position of the point source can be calculated from the ratio of the two detectors count rates.",

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AU - Presler, O.

AU - Pelled, O.

AU - German, U.

AU - Leichter, Y.

AU - Alfassi, Z. B.

PY - 2002/9/21

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AB - It was found that the activity and the position of a radioactive point source (hot spot) in a large box containing low absorbing material can be measured accurately using two NaI(Tl) gamma-ray detectors at the opposite sides of the box i.e. at 180° one to another. The harmonic mean of the count rates square roots measured with the two detectors was found to be independent of the hot spot position and depends only on the source activity, the box size and the gamma-rays energy. The activity of the radioactive point source can be calculated from the above-mentioned mean. The position of the point source can be calculated from the ratio of the two detectors count rates.

KW - A source in a box

KW - Unknown radioactive sources

KW - Virtual point detectors

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ER -

Determination of a source in a box with two detectors. I. Non-absorbing media

Abstract

Keywords

ASJC Scopus subject areas

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