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Measurement of the purity of graphite and heavy water; Controle de purete du graphite et de l'eau lourde

Abstract

The analytical methods used by the C.E.A. are described, I -- Graphite. The determination of the change in the neutron capture cross section from sample to sample is determined by, an oscillation method in the Zoe reactor, or by measuring the attenuation of a neutron flux in the subcritical system Mireille. Methods of analysing total ash, B, H, Cl, Na, Ca. Fe, Mo, Ti, V, Sm, Eu, Dy, S, Co and Cd are described and mean results are given. The methods for sampling are indicated. II -- Heavy crater. The isotopic analysis of heavy water is carried out by infra-red absorption measurements. Chemical purity is evaluated by electrical conductivity measurements, B, Na, Mg, K, Cr, Mn, Ni, Cu, Cd, are determined by spectrographic methods, and Cl{sup -}, NO{sub 3}{sup -}, SO{sub 4}{sup --}, NH{sub 4}{sup +} by chemical methods; finally, sensitive pH measurements are described. [French] On decrit les methodes d'examen en usage au Commissariat a l'Energie Atomique. I -- Graphite. L'evaluation de la capture neutronique se fait par oscillation dans la pile Zoe, ou par mesure de l'attenuation d'un flux neutronique dans l'empilement sous critique Mireille. On indique les methodes de dosages et des resultats de: cendres, B, H,  More>>
Authors:
Publication Date:
Feb 01, 1959
Product Type:
Technical Report
Report Number:
CEA-1094
Resource Relation:
Other Information: 33 refs; PBD: Feb 1959
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ABSORPTION SPECTROSCOPY; ASHES; CAPTURE; CROSS SECTIONS; ELECTRIC CONDUCTIVITY; GRAPHITE; HEAVY WATER; IMPURITIES; ISOTOPE RATIO; PH VALUE
OSTI ID:
20468443
Research Organizations:
Commissariat a l'Energie Atomique, Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR04A1094044153
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
[31] pages
Announcement Date:

Citation Formats

Hering, H. Measurement of the purity of graphite and heavy water; Controle de purete du graphite et de l'eau lourde. France: N. p., 1959. Web.
Hering, H. Measurement of the purity of graphite and heavy water; Controle de purete du graphite et de l'eau lourde. France.
Hering, H. 1959. "Measurement of the purity of graphite and heavy water; Controle de purete du graphite et de l'eau lourde." France.
@misc{etde_20468443,
title = {Measurement of the purity of graphite and heavy water; Controle de purete du graphite et de l'eau lourde}
author = {Hering, H}
abstractNote = {The analytical methods used by the C.E.A. are described, I -- Graphite. The determination of the change in the neutron capture cross section from sample to sample is determined by, an oscillation method in the Zoe reactor, or by measuring the attenuation of a neutron flux in the subcritical system Mireille. Methods of analysing total ash, B, H, Cl, Na, Ca. Fe, Mo, Ti, V, Sm, Eu, Dy, S, Co and Cd are described and mean results are given. The methods for sampling are indicated. II -- Heavy crater. The isotopic analysis of heavy water is carried out by infra-red absorption measurements. Chemical purity is evaluated by electrical conductivity measurements, B, Na, Mg, K, Cr, Mn, Ni, Cu, Cd, are determined by spectrographic methods, and Cl{sup -}, NO{sub 3}{sup -}, SO{sub 4}{sup --}, NH{sub 4}{sup +} by chemical methods; finally, sensitive pH measurements are described. [French] On decrit les methodes d'examen en usage au Commissariat a l'Energie Atomique. I -- Graphite. L'evaluation de la capture neutronique se fait par oscillation dans la pile Zoe, ou par mesure de l'attenuation d'un flux neutronique dans l'empilement sous critique Mireille. On indique les methodes de dosages et des resultats de: cendres, B, H, Cl, Na, Ca, Fe, Mo, Ti, V, Sm, Eu, Dy, et de S, Co, Cd, ainsi que les modalites d'echantillonnage. II.- Eau lourde. Le dosage isotopique dans les eaux lourdes se fait par absorptiometrie infrarouge. Leur purete chimique est evaluee par mesure de leur conductibilite electrique; les dosages d'impuretes se font par spectrographie d'emission (B, Na, Mg, K, Mn, Ni, Cu, Cd) et par des methodes chimiques (Cl{sup -}, NO{sub 3}{sup -}, SO{sub 4}{sup --}, NH{sub 4}{sup +}). On decrit la delicate mesure de pH. (auteur)}
place = {France}
year = {1959}
month = {Feb}
}