$alpha$ Counting of Plutonium Isotopes with Liquid Scintillators. Elimination of Errors, Due to Wall Adsorption of Plutonium; $alpha$-ZAHLUNG VON PLUTONIUM-ISOTOPEN MIT FLUSSIGSZINTILLATOREN. VERMEIDUNG VON FEHLERN, DIE VON EINER WAND-ADSORPTION DES PLUTONIUMS HERRUHREN

Technical Report · Mon Jul 01 04:00:00 EDT 1963

OSTI ID:4163310

ihle, H; Murrenhoff, A; Aulich, H

Tri-n-octylphosphine oxide (TOPO) was found to be a suitable non- quenching complexing agent for application to internal liquid scintillation of Pu by eliminating the errors due to chemical wall-adsorption of hydrolized species of Pu-ions. The light yield and transmission properties of the (Dioxan + PPO + POPOP + Naphthalene + TOPO) liquid scintillator allow the use of conventional counting equipment as normally used with ZnS and Nal scintillation crystals. With such equipment counting plateaus with a slope of less than 0.1% per 100 V over tue best range are obtained. With low-noise equipment excellent precision for absolute alpha counting can be achieved. The scintillator mixes with samples of aqueous Pu-solutions containing considerable quantities of salts and with samples of organic Pu-solutions containing organic complexing agents of low volatility. Both these types of samples cause difficulty for counting plate techniques due to self-absorption. The liquid scintillation method described is therefore favorable in the analytical evaluation of solvent extraction experiments. (auth)

• Research Organization: Kernforschungsanlage. Institut fur Physikalische Chemie, Julich, Germany
• NSA Number: NSA-18-000266
• OSTI ID: 4163310
• Report Number(s): JUL-127-PC
• Country of Publication: Germany
• Language: English

Related Subjects

ACCIDENTS
ALDEHYDES
ALKYL RADICALS
ALPHA DETECTION
ANODES
BERYLLIUM ALLOYS
BERYLLIUM COMPOUNDS
CHEMISTRY
CHROMIUM OXIDES
CORROSION
CURRENTS
DECOMPOSITION
DIOXANE
ELECTROLYSIS
ERRORS
ETHYLENE
FABRICATION
FORMALDEHYDE
FORMIC ACID
FUEL ELEMENTS
FUELS
JOINTS
LIQUIDS
MINERAL ACIDS
NAPHTHALENE
NIOBIUM COMPOUNDS
NITRIC ACID
ORGANIC NITROGEN COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
OXIDES
PHOSPHORUS COMPOUNDS
PLATES
PLUTONIUM ISOTOPES
POPOP
POWER PLANTS
QUANTITY RATIO
RADIATION PROTECTION
SCINTILLATION COUNTERS
SEPARATION PROCESSES
SOLUBILITY
SOLUTIONS
SOLVENT EXTRACTION
SOLVENTS
STAINLESS STEELS
TESTING
TOPO
VARIATIO