Sources and prevention of recoil contamination of solid-state alpha detectors

摘要: Most recoil contamination of the solid-state detectors used in alpha spectrometry results from radioactive chains in which short-lived, alpha-emitting daughters are produced either directly from alpha-emitting parents or indirectly by decayof a short-lived beta-emitting daughter which in turn was produced from an alpha-emitting parent. Spectra are given showing the recoil products resulting from various combinations of exposure and decay time for each of the four main radioactive series. Recoil contamination of the detector can be …