6533b856fe1ef96bd12b2f58
RESEARCH PRODUCT
High-resolution positron lifetime spectrometer with BaF2 scintillators
H. Rajainmäkisubject
PhysicsPhysics and Astronomy (miscellaneous)SpectrometerPhysics::Instrumentation and Detectorsbusiness.industryBarium fluorideGeneral EngineeringGeneral ChemistryScintillatorCathodeCoincidencelaw.inventionchemistry.chemical_compoundFull width at half maximumPositronOpticschemistrylawGeneral Materials SciencebusinessSingle crystaldescription
In this communication we report on a design of a fast coincidence positron lifetime spectrometer, which is based on single crystal barium fluoride (BaF2) scintillators. A good time resolution (190ps, FWHM), combined with a high efficiency, has been obtained in the normal experimental set-up (with cathode earthed in the photo multipliers). The pile-up effect is observed to disturbe the measured lifetimes in the 180 degree geometry due to the high detection efficiency of the BaF2 scintillator.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1987-03-01 | Applied Physics A Solids and Surfaces |