Accession Number : ADA011820


Title :   Photonuclear Production of Potassium-38,


Corporate Author : ARMED FORCES RADIOBIOLOGY RESEARCH INST BETHESDA MD


Personal Author(s) : Cole,C. M. ; Gray,F. C. ; Meaburn,G. M. ; Stevenson,J. S.


Report Date : MAR 1975


Pagination or Media Count : 14


Abstract : Radioactive potassium-38 has been produced by the photonuclear reactions 39K (gamma,n) 38K and 40Ca (gamma,np) 38K using the bremsstrahlung field developed by an electron linear accelerator. Noncarrier-free 38K was produced by irradiating potassium hydroxide pellets for 30 minutes using 10 kW of 40 MeV electrons passing through a thick tantalum converter. Yields of 50-70 mCi 38K per gram KOH irradiated were obtained. Carrier-free 38K was produced by similarly irradiating shredded calcium metal, obtaining 1-3 mCi per gram of calcium. In both cases, the target material was dissolved in HCl, neutralized and prepared as sterile solutions of KCl for injection.


Descriptors :   *POTASSIUM, *PHOTONUCLEAR REACTIONS, MEDICAL RESEARCH, RADIOACTIVE ISOTOPES.


Subject Categories : RADIOBIOLOGY
      NUCLEAR PHYSICS & ELEMENTARY PARTICLE PHYSICS


Distribution Statement : APPROVED FOR PUBLIC RELEASE