Accession Number : ADA321408

Title :   Some New Radioactive Isotopes,

Corporate Author : TECHNICAL INFORMATION SERVICE (AEC) OAK RIDGE TN

Personal Author(s) : Wilkinson, Geoffrey ; Hicks, Harry G.

PDF Url : ADA321408

Report Date : AUG 1948

Pagination or Media Count : 3

Abstract : In order to allow quantitative interpretation of the reactions of high energy particles from the 184-inch cyclotron with tantalum and heavier elements, a systematic survey is being made of radioactive isotopes of the rare earth elements and hafnium, tantalum, tungsten, and rhenium. Bombardments of various elements are being made using 38-Mev and 20-Mev helium ions, 19-Mev deuterons, and 10-Mev protons from the 60-inch Crocker Laboratory cyclotron. Chemical separation of the rare earth elements is made by ion-exchange resin columns. The accompanying table summarizes present data; energies of radiations are determined from absorption measurements; positrons are observed using a magnetic counter; mass allocations are made on the basis of measured cross sections.

Descriptors :   *RADIOACTIVE ISOTOPES, HAFNIUM, TANTALUM, TUNGSTEN, ION EXCHANGE, HELIUM BOMBARDMENT, HOLMIUM, THULIUM, RHENIUM, POSITRONS, CYCLOTRONS, TERBIUM, DEUTERON BOMBARDMENT, PROTON BOMBARDMENT, LUTETIUM.

Subject Categories : Isotopes

Distribution Statement : APPROVED FOR PUBLIC RELEASE