Accession Number:

AD0781346

Title:

Reactor Dosimetry with Diodes, Pocket Dosimeters, and Paired Chambers

Descriptive Note:

Technical note

Corporate Author:

ARMED FORCES RADIOBIOLOGY RESEARCH INST BETHESDA MD

Personal Author(s):

• Tumbraegel, G. E.
• Shosa, D. W.
• Verrelli, D. M.

Report Date:

1973-10-01

Pagination or Media Count:

21.0

Abstract:

Paired ionization chambers with nominal volumes of 0.5 cc have been used for measuring the neutron and gamma ray dose components in different AFRRI-TRIGA reactor fields. The results of these measurements have been compared with measurements made with other dosimetry systems such as wide based silicon diodes and pocket dosimeters. The saturation behavior of the pocket dosimeters has been tested by exposures with the AFRRI LINAC. Results indicate that the pocket dosimeters have a lower sensitivity to fast neutrons than to gamma rays, which could probably be improved, and, more important, that the dose rate dependence is very strong. On the other hand, the silicon diode is a very attractive device for measuring neutron doses because of its simplicity of readout, its negligible gamma response and its neutron energy response which does not change if a small shift in the neutron energy spectrum occurs.

Descriptors:

• *DOSIMETRY
• *NUCLEAR REACTORS
• DIODES
• DOSIMETERS
• GAMMA RAYS
• IONIZATION CHAMBERS
• NEUTRON SPECTRUM

Subject Categories:

• Radiobiology
• Nuclear Instrumentation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE