Published September 1979 | Version v1
Report Restricted

Determination of uranium in minerals by instrumental neutron activation analysis via U-239

Creators

  • 1. Kernforschungszentrum Karlsruhe G.m.b.H. (Germany, F.R.). Inst. fuer Radiochemie

Description

Uranium in partially thorium containing minerals has been determined by measuring U-239 activity without any chemical treatment of the samples after irradiation of the latters with epithermal neutrons at the FR-2 reactor as well as at the cyclotron for only few minutes. Influences of neutron self- shielding and self-absorption effects of energetically poor U-239 gamma radiation were examined. Conditions for simple uranium determinations with results of satisfactory precision are given. (orig.)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (German)

Bei Bestrahlung mit epithermischen Neutronen am FR-2 und am Zyklotron von nur wenigen Minuten Dauer wurde Uran in teilweise Thorium enthaltenden Mineralen ohne chemische Behandlung der Proben durch Messung der U-239-Aktivitaet bestimmt. Der Einfluss von Effekten der Neutronenselbstabschirmung sowie der Eigenabsorption der schwachenergetischen U-239-Gammastrahlung ist untersucht worden. Bedingungen fuer einfach durchzufuehrende, rasche Uranbestimmungen mit befriedigender Genauigkeit werden genannt. (orig.)

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Additional details

Additional titles

Original title (German)
Bestimmung von Uran in Mineralen durch zerstoerungsfreie Neutronenaktivierungsanalyse ueber U-239

Publishing Information

Imprint Pagination
7 p.
Report number
KFK--2871

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
11504539
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S58: GEOSCIENCES;
Descriptors DEI
ACCURACY; ACTIVATION ANALYSIS; NEUTRON BEAMS; SENSITIVITY; THORIUM MINERALS; URANIUM; URANIUM 239
Descriptors DEC
ACTINIDE NUCLEI; ACTINIDES; BEAMS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CHEMICAL ANALYSIS; ELEMENTS; EVEN-ODD NUCLEI; HEAVY NUCLEI; ISOTOPES; METALS; MINERALS; MINUTES LIVING RADIOISOTOPES; NUCLEI; NUCLEON BEAMS; PARTICLE BEAMS; RADIOACTIVE MATERIALS; RADIOACTIVE MINERALS; RADIOISOTOPES; URANIUM ISOTOPES