You need JavaScript to view this

Spectrum library concept and pulse shape analysis in liquid scintillation counting

Abstract

Wallac introduced in 1990 a new absolute liquid scintillation counting (LSC) method, Digital Overlay Technique (DOT) to correct for quench. This method allows quantization of multilabel samples by referring to library spectra which are generated against chemical and color quench indices at the factory. The libraries can further be expanded to any beta emitter by user with a method called fine tuning, which can be carried out even with a single sample. Spectrum libraries are created over the whole spectrum range of the radionuclide and allow automatic identification of a single label beta emitting radionuclide, called Easy Count method. Another improvement in LSC is commercial introduction of Pulse Shape Analysis (PSA) in 1986 by Wallac. This method recognizes alpha particle decay by pulse shape and leads to excellent sensitivity in alpha counting because most of the background signal in LSC comprises of short or beta like pulses. PSA detects alpha events in the presence of high excess of beta activity over alphas, up to a ratio 100000 to 1. (orig.)
Authors:
Kaihola, L [1] 
  1. Wallac Oy, Turku (Finland)
Publication Date:
Mar 01, 1997
Product Type:
Conference
Report Number:
FZR-170; CONF-9611197-
Reference Number:
SCA: 440103; PA: DEN-97:0FE074; EDB-97:126871; SN: 97001851062
Resource Relation:
Conference: Workshop on methods and applications of low-level radioactivity measurements (LOWRAD), Rossendorf (Germany), 7-8 Nov 1996; Other Information: PBD: Mar 1997; Related Information: Is Part Of LOWRAD 96. Methods and applications of low-level radioactivity measurements. Proceedings; Fietz, J. [ed.] [Forschungszentrum Rossendorf e.V. (FZR), Dresden (Germany)]; PB: 170 p.
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; LOW LEVEL COUNTING; BETA SPECTROSCOPY; ALPHA SPECTROSCOPY; LIQUID SCINTILLATION DETECTORS; PULSE ANALYZERS; SCINTILLATION QUENCHING; DOSE RATES; RADIUM 226
OSTI ID:
525368
Research Organizations:
Forschungszentrum Rossendorf e.V. (FZR), Rossendorf bei Dresden (Germany); Verein fuer Kernverfahrenstechnik und Analytik Rossendorf e.V. (VKTA), Dresden (Germany)
Country of Origin:
Germany
Language:
English
Other Identifying Numbers:
Other: ON: DE98700903; TRN: DE97FE074
Availability:
INIS; OSTI as DE98700903
Submitting Site:
DEN
Size:
pp. 91-101
Announcement Date:

Citation Formats

Kaihola, L. Spectrum library concept and pulse shape analysis in liquid scintillation counting. Germany: N. p., 1997. Web.
Kaihola, L. Spectrum library concept and pulse shape analysis in liquid scintillation counting. Germany.
Kaihola, L. 1997. "Spectrum library concept and pulse shape analysis in liquid scintillation counting." Germany.
@misc{etde_525368,
title = {Spectrum library concept and pulse shape analysis in liquid scintillation counting}
author = {Kaihola, L}
abstractNote = {Wallac introduced in 1990 a new absolute liquid scintillation counting (LSC) method, Digital Overlay Technique (DOT) to correct for quench. This method allows quantization of multilabel samples by referring to library spectra which are generated against chemical and color quench indices at the factory. The libraries can further be expanded to any beta emitter by user with a method called fine tuning, which can be carried out even with a single sample. Spectrum libraries are created over the whole spectrum range of the radionuclide and allow automatic identification of a single label beta emitting radionuclide, called Easy Count method. Another improvement in LSC is commercial introduction of Pulse Shape Analysis (PSA) in 1986 by Wallac. This method recognizes alpha particle decay by pulse shape and leads to excellent sensitivity in alpha counting because most of the background signal in LSC comprises of short or beta like pulses. PSA detects alpha events in the presence of high excess of beta activity over alphas, up to a ratio 100000 to 1. (orig.)}
place = {Germany}
year = {1997}
month = {Mar}
}