Published December 16, 1981 | Version v1
Miscellaneous Restricted

Investigation of quenching and of the distortion of #betta# spectra occurring in the measuring process when liquid scintillation counters are used

Creators

Description

For quenches about 30 organic substances are used which are added to liquid scintillators on the basis of toluol/PPO and dioxan/naphtalene/PPO. From a model a modified Stern-Volmer equation is derived governing all quenchers. For investigation of the problem of chemical quenching the energy spectra of 14C-n-hexadecane is used. It is assumed that for 32P, 3H, and possibly 187Re similar results may be obtained. (HP)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (German)

Als Quencher dienen etwa 30 organische Substanzen, die in Fluessigszintillatoren auf der Basis Toluol/PPO und Dioxan/Naphtalin/PPO zugesetzt werden. Aus einem Modell wird eine modifizierte Stern-Volmer-Gleichung abgeleitet, der alle Quencher gehorchen. Zur Untersuchung des Problems des chemischen Quenching dienen die #betta#-Energiespektren des 14C-n-Hexadekan. Es wird erwartet, dass fuer 32P, 3H und eventuell 187Re aehnliche Ergebnisse erreichbar sind. (HP)

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Additional details

Additional titles

Original title (German)
Untersuchung des Quenching und der beim Messprozess mit Fluessigszintillationszaehlern auftretenden Verzerrung von #betta#-Spektren

Publishing Information

Imprint Pagination
108 p.
Report number
INIS-mf--8233

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
14780167
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Resource subtype / Literary indicator
Thesis
Descriptors DEI
BETA DETECTION; BETA SPECTRA; CARBON 14; LIQUID SCINTILLATION DETECTORS; LOW LEVEL COUNTERS; PHOSPHORUS 32; RHENIUM 187; SCINTILLATION QUENCHING; TRITIUM
Descriptors DEC
BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CARBON ISOTOPES; CHARGED PARTICLE DETECTION; DAYS LIVING RADIOISOTOPES; EVEN-EVEN NUCLEI; HEAVY NUCLEI; HYDROGEN ISOTOPES; ISOTOPES; LIGHT NUCLEI; MEASURING INSTRUMENTS; NUCLEI; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; PHOSPHORUS ISOTOPES; RADIATION DETECTION; RADIATION DETECTORS; RADIOISOTOPES; RHENIUM ISOTOPES; SCINTILLATION COUNTERS; SPECTRA; STABLE ISOTOPES; YEARS LIVING RADIOISOTOPES