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.
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 = []
volume = {11}
journal type = {AC}
place = {France}
year = {1950}
month = {Jan}
}
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 = []
volume = {11}
journal type = {AC}
place = {France}
year = {1950}
month = {Jan}
}