DocumentCode :
819714
Title :
Properties of a neutron detector based on ionization chamber with /sup 6/Li converters
Author :
Engels, R. ; Clemens, U. ; Kemmerling, G. ; Schelten, J.
Author_Institution :
Zentralinst. fur Elektron., Forschungszentrum Julich GmbH
Volume :
52
Issue :
6
fYear :
2005
Firstpage :
2907
Lastpage :
2910
Abstract :
The ICC neutron detector is an ionization chamber with three neutron absorbing converter electrodes of 6Li metal foils. On both sides the foils face collector electrodes that are positively biased. The neutron detection was investigated at the pulsed neutron source of the Argonne National Laboratory, Argonne, IL. The induced charge due to drifting electrons that are generated by the energetic 3H recoil nucleus in the C2F6 gas between the electrodes was measured as function of gas pressure, gas contamination, and applied drift voltage. The neutron detection efficiency was determined and the gamma insensitivity was estimated. The pulse heights were calibrated by the induced charge from test pulses. The timing characteristics of the detector pulses were assessed, and time-of-flight measurements demonstrated the usefulness of the detector. First, neutron diffraction experiments were made with structured collection electrodes for position-sensitive detection and for estimating the achievable spatial resolution
Keywords :
ionisation chambers; neutron detection; neutron diffraction; neutron sources; position sensitive particle detectors; pulse height analysers; 6Li metal foil; Argonne National Laboratory; C2F6 gas; ICC neutron detector; drift voltage; drifting electrons; energetic recoil nucleus; face collector electrodes; gamma insensitivity; gas contamination; gas pressure; ionization chamber; neutron absorbing converter electrodes; neutron diffraction experiments; position-sensitive detection; pulse heights; pulsed neutron source; spatial resolution; structured collection electrodes; time-of-flight measurements; timing characteristics; Detectors; Electrodes; Electrons; Face detection; Ionization chambers; Laboratories; Neutrons; Pollution measurement; Pulse generation; Pulse measurements;
fLanguage :
English
Journal_Title :
Nuclear Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9499
Type :
jour
DOI :
10.1109/TNS.2005.860171
Filename :
1589297
Link To Document :
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