Question

What is the order of efficiency for gamma ray detection for the following detectors: HPGe, Si(Ge), scintillation, gas ionization

Answer 1

* Not all gamma rays emitted by the source that passes through the detector will produce a count in the system. The probability that an emilted gamma ray will interact with the detector and produce a count is the efficiency of the detectro. * Detector efficiency is measured by comparing a spectrum from a source of known activity to the count rate. AYSHINE

x the order of elforency of or gamma say detection for the following delectuos, HP Ge, si he, Scintillatim, gas imisation. - HP Ge> Semiconductor detector) Scintillatum delechors) gal ronisatim. - ie. HiGe 7 Sike) Scintillation > gasimisation HP Ge - This has higher sensitivity. - scintillatim detector - It has pour resolution. - Gas imisation - It cannot measure the energy of the radiation, ic. no spectrosouphic information, it will not measure high radiation rates due to dead time. NE