Home Contents Glossary Search Help

Absolute efficiency
Up Next

 

The absolute efficiency is the ratio of the measured count rate within the peak to the gamma ray emission rate of the source.
eabs  = 

Number of pulses recorded

Number of radiation quanta emitted by source

dependent on detector properties and details of counting geometry. Therefore:

Efficiency = 

Peak area

Live time emission probability source activity

 

The University of Liverpool
1999, 2000 The University of Liverpool, Department of Physics

EPSRCProject funded by The Engineering and Physical Sciences Research Council

Materials Teaching Educational ResourcesWebsite developed and maintained by the MATTER Project