Apparatus for Measuring the Energy Spectra of Mass-Selected Particles in Coincidence with Fission

Publisher Website
Google Scholar
Abstract
An apparatus used to observe the energy spectrum of protons in coincidence with 14‐Mev deuteron‐induced fission is described. One feature is a mass identifier which operates over a range of 5 to 25 Mev and gives good separation of protons, deuterons, and tritons. Its operation depends on measuring the particle energy loss, ΔE, in a transmission counter and the residual energy, E, in a separate counter. The E and ΔE pulses are introduced into an electronic computer which in 1 μsec produces a pulse whose height is closely proportional to mass. The accuracy of mass separation is illustrated by a representative case in which less than 0.1% of the elastically scattered deuterons appear in the proton energy spectrum. In the presence of the complicating effects of cyclotron beam modulation, the chance coincidence correction to the proton‐fission coincidence spectrum is made by simultaneously measuring the delayed and undelayed spectra.

This publication has 3 references indexed in Scilit: