Single-crystal CeCl3 (CH3OH)4: A new metal-organic cerium chloride methanol adduct for scintillator applications

L. A. Boatner, D. Wisniewski, J. S. Neal, J. O. Ramey, J. A. Kolopus, B. C. Chakoumakos, M. Wisniewska, R. Custelcean

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Abstract

A new scintillator material consisting of a methanol adduct of cerium trichloride with the composition CeCl3 (CH3OH)4 has been discovered and crystallized in the form of large single crystals by solution growth in methanol. The peak emission of the x-ray-excited luminescence spectrum occurs at ∼364 nm. A light yield of up to ∼16 600 photons/MeV and an energy resolution of 11.4% were obtained using 662 keV gamma-ray photons. The scintillator decay time for 662 keV gamma-ray excitation was measured using the time-correlated, single-photon-counting method, and a nominal value of 64.4 ns was obtained. The molecular adduct CeCl3 (CH3OH) 4 represents the first example of a rare-earth, metal-organic scintillator that is applicable to gamma ray, x ray, and neutron detection.

Original languageEnglish
Article number244104
JournalApplied Physics Letters
Volume93
Issue number24
DOIs
StatePublished - 2008

Funding

Research carried out in the Center for Radiation Detection Materials and Systems at ORNL is supported by the NNSA Office of Nonproliferation Research and Engineering (NA-22), U.S. DOE. ORNL is operated by UT-Battelle, LLC for the U.S. DOE under Contract No. DE-AC05-00OR22725.

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