Published 1991 | Version v1
Journal article Metadata-only

Field measurements of radon exhalation and Ra-226 content in soil using the can-technique

Creators

  • 1. Alexandria Univ. (Egypt). Dept. of Physics
  • 2. Cairo Univ., Khartoum (Sudan). Faculty of Science
  • 3. Alexandria Univ. (Egypt). Biophysics Dept.
  • 4. Alexandria Univ. (Egypt). Physical Chemistry Dept.

Description

CR-39 and LR-115 plastic nuclear track detectors in the can-technique have been employed in the field measurements of radon exhalation, Ra-226 and U-238 content in dry-soil air at numerous regions in Sudan (the Blue and White Nile and Mogran regions). Measurements gave an average radon exhalation from the soil to the atmosphere and Ra-226 content of (23.4±2.60) kBq.m-2 and (123±13.65) Bq.kg-1 respectively. A polyethylene permeable memebrane cover was used to eliminate the contribution of thoron activity inside the can. Assuming a radioactive equilibrium between the U-series, the average U-238 content in the soil was found to be (9.92±1.01) ppm. This survey may be used for uranium prospection in soil. (orig.)

Abstract (German)

Die CR-39- und LR-115-Plast-Kernspurdetektoren wurden verwendet, um die Radon-Exhalation, den Ra-226- und den U-238-Gehalt in zahlreichen Regionen des Sudans (Blauer und Weisser Nil und Mogran-Region) zu ermitteln. Dabei wurde fuer diese Feldmessungen die Buechsentechnik angewendet. Die Messungen ergeben eine mittlere Radon-Exhalation vom Boden in die Atmosphaere (23,4±2,60) kBq.m-2 und einen mittleren Ra-226-Gehalt von (123±13,65) Bq.kg-1. Um die Thoronaktivitaet zu verhindern, wurde innerhalb des Behaelters eine permeable Polyethylenmembran zur Abdeckung verwendet. Unter der Annahme eines radioaktiven Gleichgewichts zwischen den Uran-Zerfallsreihen wird ein mittlerer U-238-Gehalt im Boden von (9,92±1,01) ppm gefunden. Diese Erkundung kann fuer eine Uranprospektion im Boden eingesetzt werden. (orig.)

Additional details

Publishing Information

Journal Title
Isotopenpraxis
Journal Volume
27
Journal Issue
4
Series
Isotopenpraxis.
Journal Page Range
188-190
ISSN
0021-1915
CODEN
IPRXA

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
22083816
Subject category
S58: GEOSCIENCES; S11: NUCLEAR FUEL CYCLE AND FUEL MATERIALS;
Descriptors DEI
DAUGHTER PRODUCTS; DIELECTRIC TRACK DETECTORS; FIELD TESTS; PROSPECTING; RADIOACTIVITY; RADIUM 226; RADON ISOTOPES; SOILS; SUDAN; URANIUM 238
Descriptors DEC
ACTINIDE NUCLEI; AFRICA; ALPHA DECAY RADIOISOTOPES; CARBON 14 DECAY RADIOISOTOPES; DEVELOPING COUNTRIES; EVEN-EVEN NUCLEI; HEAVY ION DECAY RADIOISOTOPES; HEAVY NUCLEI; ISOTOPES; MEASURING INSTRUMENTS; NUCLEI; RADIATION DETECTORS; RADIOISOTOPES; RADIUM ISOTOPES; SPONTANEOUS FISSION RADIOISOTO; URANIUM ISOTOPES; YEARS LIVING RADIOISOTOPES