Initial investigation of strengthening agents for lanthanide halide scintillators

M. J. Harrison; F. P. Doty

doi:10.1117/12.740524

29 September 2007 Initial investigation of strengthening agents for lanthanide halide scintillators

M. J. Harrison, F. P. Doty

Proceedings Volume 6707, Penetrating Radiation Systems and Applications VIII; 67070B (2007) https://doi.org/10.1117/12.740524
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

Lanthanide halide alloys have recently enabled scintillating gamma ray spectrometers comparable to room-temperature semiconductors (< 3% FWHM energy resolutions at 662keV). However brittle fracture of these materials hinders the growth of large volume crystals. Efforts to improve the strength through non-lanthanide alloy substitution, while preserving scintillation, are being pursued. Isovalent alloys nominal Ce_0.9Al_0.1Br₃, Ce_0.9Ga_0.1Br₃, Ce_0.9Sc_0.1Br₃, Ce_0.9In_0.1Br₃ and Ce_0.8Y_0.2Br₃, as well as aliovalent alloys nominal (CeBr₃)_0.99(CdCl₂)_0.01, (CeBr₃)_0.99(CdBr₂)_0.01, (CeBr₃)_0.99(ZnBr₂)_0.01, (CeBr₃)_0.99(CaBr₂)_0.01, (CeBr₃)_0.99(SrBr₂)_0.01, (CeBr₃)_0.99(PbBr₂)_0.01, (CeBr₃)_0.99(ZrBr₄)_0.01, (CeBr₃)_0.99(HfBr₄)_0.01 were prepared. All of these alloys exhibit bright fluorescence under UV excitation, with varying shifts in the spectral peaks and intensities relative to pure CeBr₃. Further, these alloys scintillate when coupled to a photomultiplier tube (PMT) and exposed to ¹³⁷Cs gamma rays. These data and the potential for improved crystal growth will be discussed.

Citation Download Citation

M. J. Harrison and F. P. Doty "Initial investigation of strengthening agents for lanthanide halide scintillators", Proc. SPIE 6707, Penetrating Radiation Systems and Applications VIII, 67070B (29 September 2007); https://doi.org/10.1117/12.740524

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available