SPECTROCHEMICAL DETERMINATION OF Sm, Eu, Gd, AND Dy IN REACTOR GRAPHITE

Journal Article · Fri Jun 01 04:00:00 EDT 1962 · Nukleonik (West Germany) Discontinued with vol. 12

OSTI ID:4795136

Golling, E; Zagel, R

A spectrochemical method for the detection of Sm, Eu, Gd, and Dy in the concentration range from 10/sup -6/ to 10/sup -7% was worked out. The graphite samples were ashed at 800 deg C and the rare earths in the ashes were enriched with Tm as trace carrier and internal standard. The excitation of the spectra took place in a buffered'' carbon arc of 15 amp. In reference to 100 g graphite samples, the following limits of detection were obtained: Sm, 8.5 x 10/sup -8%; Eu, 4.0 x 10/sup -8%; Gd, 8.5 x 10/sup -8%; and Dy, 7.0 x 10/sup -8/%. The relative accuracy is plus or minus 20%. The agreement of the microscopic effective cross seciion of graphite calculated from the analytical values with the neutron absorption measurements in a pile oscillator is satisfactory. (tr- auth)

• Research Organization: Siemens-Schuckertwerke A.G., Erlangen, Ger.
• NSA Number: NSA-16-026932
• OSTI ID: 4795136
• Journal Information: Nukleonik (West Germany) Discontinued with vol. 12, Journal Name: Nukleonik (West Germany) Discontinued with vol. 12 Vol. Vol: 4; ISSN NUKKA
• Country of Publication: Country unknown/Code not available
• Language: German

Related Subjects

ABSORPTION
CARRIERS
CHEMISTRY
COMBUSTION
CROSS SECTIONS
DYSPROSIUM
EFFICIENCY
ELECTRIC ARCS
EUROPIUM
EXCITATION
GADOLINIUM
GRAPHITE
HIGH TEMPERATURE
NEUTRONS
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
SAMARIUM
SPECTROSCOPY
STANDARDS
THULIUM
TRACE AMOUNTS