Author/Authors :
Arpesella، نويسنده , , C. and Bellotti، نويسنده , , E. and Miramonti، نويسنده , , L. and Sverzellati، نويسنده , , P.P.، نويسنده ,
Abstract :
The gamma ray activity of three samples of natural neodymium has been measured and the concentration of radioactive elements from uranium and thorium chains as well as that from radioactive isotopes of lantanium and lutetium has been quantitatively determined. All the samples show significant contaminations up to p.p.m.
