TRITIUM COUNTING IN LIQUID SCINTILLATORS WITH P-OLIGOPHENYLS

Journal Article · Tue Jan 01 04:00:00 EST 1963 · Radiochimica Acta (West Germany)

OSTI ID:4702161

Erdtmann, G; Herrmann, G

able primary solute in liquid scintillators. As wavelengthshifters 3,3',2'''',3''''' -tetramethylsexiphenyl (TMSP) or POPOP (1,4-di- STA2-(5-phenyl, oxazolyl)!-benzol) can be used. Counting efficiency for tritium in toluene is 30% higher with TMQP-POPOP than with PPO-POPOP. In counting of tritiated water with dioxane-ethanol-xylenescintillators, PPO (2,5-diphenyloxazol) gives the better sensitivity; but with dioxane -anisol-dimethylglycol the figure of merit is somewhat better if TMQP is used. The latter solvent mixture is recommended to count low specific activities. For C/sup 14/ the counting efficiency is nearly the same with TMQP as with PPO. Studies were made on the effect of secondary solvents in scintillators containing TMQP, PPO, and p-terphenyl; naphthalene interferes with the scintillation process of TMQP. Against quenching by mineral acids, TMQP-scintillators are more resistant than those with PPO. (auth)

• Research Organization: Universitat, Mainz
• NSA Number: NSA-17-029217
• OSTI ID: 4702161
• Journal Information: Radiochimica Acta (West Germany), Journal Name: Radiochimica Acta (West Germany) Vol. Vol: 1; ISSN RAACA
• Country of Publication: Country unknown/Code not available
• Language: German

Related Subjects

ALCOHOLS
ALKANES
ANISOLE
CARBON 14
EFFICIENCY
ERRORS
ETHANOL
ETHERS
FREQUENCY
INSTRUMENTS AND INSTRUMENTATION
LABELLED COMPOUNDS
LIQUIDS
MINERAL ACIDS
NAPHTHALENE
ORGANIC NITROGEN COMPOUNDS
PHOSPHORS
POLYPHENYLS
POPOP
SCINTILLATION COUNTERS
STABILITY
TRITIUM
XYLENE