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Detecting hidden sources-STUK/HUT team

Abstract

The task of the team was to locate and to identify hidden sources in a specified area in Padasjoki Auttoinen village. The team used AB-420 helicopter of the Finnish Frontier Guard. The team had two measuring systems: HPGe system (relative efficiency 18%) and 5`x5` NaI system. The team found two sources in real-time and additional two sources after 24 h analysis time. After the locations and characteristics of the sources were announced it was found out that altogether six sources would have been possible to find using the measured data. The total number of sources was ten. The NaI detector was good at detecting and locating the sources and HPGe was most useful in identification and calculation of the activity estimates. The following development should be made: 1) larger detectors are needed, 2) the software has to be improved. (This has been performed after the exercise) and 3) the navigation must be based on DGPS. visual navigation causes easily gaps between the flight lines and some sources may not be detected. (au).
Authors:
Nikkinen, M; Aarnio, P; [1]  Honkamaa, T; Tiilikainen, H [2] 
  1. Helsinki Univ. of Technology, Espoo (Finland)
  2. Finnish Centre for Radiation and Nuclear Safety, Helsinki (Finland)
Publication Date:
Dec 31, 1997
Product Type:
Technical Report
Report Number:
NEI-DK-3090
Reference Number:
SCA: 540230; 440103; PA: AIX-29:015522; EDB-98:062413; SN: 98001946361
Resource Relation:
Other Information: PBD: 1997; Related Information: Is Part Of RESUME 95. Rapid environmental surveying using mobile equipment; PB: 440 p.
Subject:
54 ENVIRONMENTAL SCIENCES; 44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; RADIATION DETECTION; ACCURACY; AERIAL MONITORING; EFFICIENCY; EVALUATION; POINT SOURCES; SIMULATION
OSTI ID:
606702
Research Organizations:
Nordisk Kernesikkerhedsforskning, Roskilde (Denmark).
Country of Origin:
Denmark
Language:
English
Other Identifying Numbers:
Other: ON: DE98616927; CNN: Contract NKS-EKO-3; ISBN 87-7893-014-6; TRN: DK9800036015522
Availability:
INIS; OSTI as DE98616927
Submitting Site:
DKN
Size:
pp. 143-150
Announcement Date:

Citation Formats

Nikkinen, M, Aarnio, P, Honkamaa, T, and Tiilikainen, H. Detecting hidden sources-STUK/HUT team. Denmark: N. p., 1997. Web.
Nikkinen, M, Aarnio, P, Honkamaa, T, & Tiilikainen, H. Detecting hidden sources-STUK/HUT team. Denmark.
Nikkinen, M, Aarnio, P, Honkamaa, T, and Tiilikainen, H. 1997. "Detecting hidden sources-STUK/HUT team." Denmark.
@misc{etde_606702,
title = {Detecting hidden sources-STUK/HUT team}
author = {Nikkinen, M, Aarnio, P, Honkamaa, T, and Tiilikainen, H}
abstractNote = {The task of the team was to locate and to identify hidden sources in a specified area in Padasjoki Auttoinen village. The team used AB-420 helicopter of the Finnish Frontier Guard. The team had two measuring systems: HPGe system (relative efficiency 18%) and 5`x5` NaI system. The team found two sources in real-time and additional two sources after 24 h analysis time. After the locations and characteristics of the sources were announced it was found out that altogether six sources would have been possible to find using the measured data. The total number of sources was ten. The NaI detector was good at detecting and locating the sources and HPGe was most useful in identification and calculation of the activity estimates. The following development should be made: 1) larger detectors are needed, 2) the software has to be improved. (This has been performed after the exercise) and 3) the navigation must be based on DGPS. visual navigation causes easily gaps between the flight lines and some sources may not be detected. (au).}
place = {Denmark}
year = {1997}
month = {Dec}
}