US 4,400,621 A · Detector device

Abstract

A device for simultaneously detecting alpha and beta particles which comprises a detector element, amplification means coupled to the output of the detector element and measuring means coupled to the output of the amplification means. The alpha and beta particles which impinge on the detector element exhibit different ionization densities, and this results in a voltage being generated at the output of the amplification means which has a rise time and amplitude corresponding to the type of particle impinging on the detector element. The measuring means measures at least the rise time of the voltage at the output of the amplification means, the rise time being different for the alpha and beta particles and providing a means for distinguishing between the two types of particles.

Claims10

Dependent claims

A device for simultaneously detecting alpha and beta particles comprising

a detector element for detecting both alpha and beta particles impinging thereon, said alpha and beta particles exhibiting different ionization densities;
and
amplification means coupled to the output of said detector element, said amplification means generating a voltage at its output having a rise time and amplitude corresponding to the type of particle impinging on said detector element, said rise time being different for said alpha and beta particles and providing a means for distinguishing therebetween.

Dependencies are inferred from the claim text.

Detector device

Life of this patent

Detector device

Life of this patent

Abstract

Claims10