Gamma spectroscopy is a radiochemistry measurement method which
determines the energy and count rate of gamma rays emitted by
DESCRIBE the operation of a gamma spectrometer to
Type of detector used
Multichannel analyzer operation
Gamma spectroscopy is a radiochemistry measurement method that determines the energy and
count rate of gamma rays emitted by radioactive substances. Gamma spectroscopy is an
extremely important measurement. A detailed analysis of the gamma ray energy spectrum is used
to determine the identity and quantity of gamma emitters present in a material.
The equipment used in gamma spectroscopy includes a detector, a pulse sorter (multichannel
analyzer), and associated amplifiers and data readout devices. The detector is normally a sodium
iodide (NaI) scintillation counter. Figure 27 shows a block diagram of a gamma spectrometer.
Figure 27 Gamma Spectrometer Block Diagram