Theoretical investigations suggest that the nonproportionality in a scintillator is caused by the high excitation density created within the track of an X-ray or ? ray photon entering in a scintillating crystal. In this paper an analytical expression for the scintillator yield is derived. For the case of BaF2 scintillator the role of excitons created within the ?-ray track in the scintillator yield is studied. By comparing the results of two theories an analytical expression is also derived for an energy parameter which could otherwise only be determined by fitting the theoretical yield to the experimental data. � 2010 IOP Publishing Ltd.
|Title of host publication||Journal of Physics|
|Subtitle of host publication||Conference Series|
|Place of Publication||United Kingdom|
|Publisher||Institute of Physics Publishing (IOP Publishing)|
|Number of pages||6|
|Publication status||Published - 2010|
|Event||16th International School of Condensed Matter Physics - Bulgaria|
Duration: 30 Aug 2010 → 3 Sep 2010
|Conference||16th International School of Condensed Matter Physics|
|Period||30/08/10 → 3/09/10|
Singh, J. (2010). Role of excitons in the energy resolution of scintillators used for medical imaging. In Journal of Physics: Conference Series (Vol. 253, pp. -). Institute of Physics Publishing (IOP Publishing).