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Use of photographic emulsions for the determination of radioactivity of rocks by the examination of the trajectories of. cap alpha. rays

Journal Article:

Abstract

The author describes the use of photographic plates for determining the uranium and thorium content of rocks. By this method he evaluates the ratio of thorium to uranium concentrations, and the total radioactive content of several rocks found in Brittany. The radioactive material was found to be distributed in the following way: in very small inclusions (with areas measured in tens of square microns); in crystals as large as 1 mm containing thorium (1 part in 100) very unevenly distributed, with little or no uranium; in small grains (several hundreds of square millimeters) with high thorium concentration (75 parts in 100), possibly in the form of pure thorite.
Authors:
Publication Date:
Jan 01, 1950
Product Type:
Journal Article
Reference Number:
EDB-79-128989
Resource Relation:
Journal Name: J. Phys. Radium; (France); Journal Volume: 11; Other Information: In NSA; 4: 2331(1950)
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; THORIUM; AUTORADIOGRAPHY; THORIUM ORES; EXPLORATION; URANIUM; URANIUM DEPOSITS; ALPHA PARTICLES; FRANCE; PARTICLE TRACKS; PHOTOGRAPHIC EMULSIONS; QUANTITATIVE CHEMICAL ANALYSIS; RADIOACTIVITY; ROCKS; ACTINIDES; CHARGED PARTICLES; CHEMICAL ANALYSIS; ELEMENTS; EUROPE; GEOLOGIC DEPOSITS; METALS; ORES; RESOURCES; 050200* - Nuclear Fuels- Exploration- (-1987); 400101 - Activation, Nuclear Reaction, Radiometric & Radiochemical Procedures
OSTI ID:
5952020
Country of Origin:
France
Language:
French
Other Identifying Numbers:
Journal ID: CODEN: JPAAA
Submitting Site:
TIC
Size:
Pages: 21-32
Announcement Date:

Journal Article:

Citation Formats

Coppens, R. Use of photographic emulsions for the determination of radioactivity of rocks by the examination of the trajectories of. cap alpha. rays. France: N. p., 1950. Web.
Coppens, R. Use of photographic emulsions for the determination of radioactivity of rocks by the examination of the trajectories of. cap alpha. rays. France.
Coppens, R. 1950. "Use of photographic emulsions for the determination of radioactivity of rocks by the examination of the trajectories of. cap alpha. rays." France.
@misc{etde_5952020,
title = {Use of photographic emulsions for the determination of radioactivity of rocks by the examination of the trajectories of. cap alpha. rays}
author = {Coppens, R}
abstractNote = {The author describes the use of photographic plates for determining the uranium and thorium content of rocks. By this method he evaluates the ratio of thorium to uranium concentrations, and the total radioactive content of several rocks found in Brittany. The radioactive material was found to be distributed in the following way: in very small inclusions (with areas measured in tens of square microns); in crystals as large as 1 mm containing thorium (1 part in 100) very unevenly distributed, with little or no uranium; in small grains (several hundreds of square millimeters) with high thorium concentration (75 parts in 100), possibly in the form of pure thorite.}
journal = {J. Phys. Radium; (France)}
volume = {11}
journal type = {AC}
place = {France}
year = {1950}
month = {Jan}
}