You need JavaScript to view this

Personnel Neutron Monitoring at AB Atomenergi

Abstract

The routine personnel monitoring of fast neutrons is carried out by the counting of tracks in a nuclear emulsion. The tracks are counted in a microscope on a projection screen. This is a very tedious job and is only done on irradiated films which are counted over 6 mm{sup 2}. The irradiated films are selected according to the recorded dose on the gamma film. It is often difficult to tell how much the visible tracks have faded during a two-weeks period. Fortunately the fading does not often exceed 20 % for this period. If the dosimeter has been gamma-irradiated, it may be difficult to recognize the proton tracks. If the film is stored for some time before being developed, this gamma fog will to some extent fade away. For large neutron doses a foil activation dosimeter is used. This dosimeter consists of a cadmium-shielded phosphorus foil, a cadmium shielded gold foil and an unshielded gold foil. The phosphorus foil has to be counted shortly after exposure.
Publication Date:
Feb 15, 1964
Product Type:
Technical Report
Report Number:
AE-137
Resource Relation:
Other Information: 9 refs., 10 figs., 2 tabs.
Subject:
61 RADIATION PROTECTION AND DOSIMETRY; NEUTRON MONITORS; PERSONNEL DOSIMETRY; FAST NEUTRONS; PHOSPHORUS
OSTI ID:
20930932
Research Organizations:
AB Atomenergi, Nykoeping (Sweden)
Country of Origin:
Sweden
Language:
English
Other Identifying Numbers:
TRN: SE0708344
Availability:
Commercial reproduction prohibited; OSTI as DE20930932
Submitting Site:
SWDN
Size:
24 pages
Announcement Date:
Sep 29, 2007

Citation Formats

Hagsgaard, S, and Widell, C O. Personnel Neutron Monitoring at AB Atomenergi. Sweden: N. p., 1964. Web.
Hagsgaard, S, & Widell, C O. Personnel Neutron Monitoring at AB Atomenergi. Sweden.
Hagsgaard, S, and Widell, C O. 1964. "Personnel Neutron Monitoring at AB Atomenergi." Sweden.
@misc{etde_20930932,
title = {Personnel Neutron Monitoring at AB Atomenergi}
author = {Hagsgaard, S, and Widell, C O}
abstractNote = {The routine personnel monitoring of fast neutrons is carried out by the counting of tracks in a nuclear emulsion. The tracks are counted in a microscope on a projection screen. This is a very tedious job and is only done on irradiated films which are counted over 6 mm{sup 2}. The irradiated films are selected according to the recorded dose on the gamma film. It is often difficult to tell how much the visible tracks have faded during a two-weeks period. Fortunately the fading does not often exceed 20 % for this period. If the dosimeter has been gamma-irradiated, it may be difficult to recognize the proton tracks. If the film is stored for some time before being developed, this gamma fog will to some extent fade away. For large neutron doses a foil activation dosimeter is used. This dosimeter consists of a cadmium-shielded phosphorus foil, a cadmium shielded gold foil and an unshielded gold foil. The phosphorus foil has to be counted shortly after exposure.}
place = {Sweden}
year = {1964}
month = {Feb}
}