ZnO-based scintillation ceramics for application in HENPA LENPA analyzers have been investigated. The following ceramic samples have been prepared: undoped ones (ZnO), an excess of zinc in stoichiometry (ZnO:Zn), doped with gallium (ZnO:Ga) and lithium (ZnO:Li). Optical transmission, x-ray excited emission, scintillation decay and pulse height spectra were measured and analyzed. Ceramics have reasonable transparency in visible range (up to 60% for 0.4 mm thickness) and energy resolution (14.9% at 662 keV Cs137 gamma excitation). Undoped ZnO shows slow (1.6 {\mu}s) luminescence with maximum at 2.37 eV and light yield about 57% of CsI:Tl. ZnO:Ga ceramics show relatively low light yield with ultra fast decay time (1 ns). Lithium doped ceramics ZnO:Li have better decay time than undoped ZnO with fair light yield. ZnO:Li ceramics show good characteristics under alpha-particle excitation and can be applied for the neutral particle analyzers.
Cite
@article{arxiv.1111.2147,
title = {Novel Scintillation Material - ZnO Transparent Ceramics},
author = {P. A. Rodnyi and K. A. Chernenko and E. I. Gorokhova and S. S. Kozlovskii and V. M. Khanin and I. V. Khodyuk},
journal= {arXiv preprint arXiv:1111.2147},
year = {2015}
}
Comments
4 pages, 8 figures, research covered in this paper was presented at SCINT2011 conference as a poster, submitted for publication at IEEE Trans. Nucl. Sci