PROCEDIMIENTO Y APARATO PARA LA DOSIFICACION DE UN ELEMENTODE GRAN ACTIVIDAD ALFA, DILUIDO EN UN CUERPO DE ACTIVIDAD ALFA REDUCIDA.

摘要

A method of determination of an element having high alpha activity and diluted in a substance having low alpha activity by alpha particle spectrometry of a source having a thickness at least equal to the path of the alpha particles which provide a spectral curve or so-called degraded spectrum having a practically rectilinear portion, wherein said method consists in determining the quantity of said high-alpha activity element contained in said source by measuring the area of one section of the degraded spectrum which is comprised between two fixed energies located between the limits of said rectilinear portion, said area after subtraction of the background and the contribution of the substance which has a low alpha activity being proportional to the content to be determined.