LA-DOPED PBWO4, SCINTILLATING CRYSTALS GROWN IN LARGE INGOTS

Authors
HARA K ISHII M KOBAYASHI M NIKL M TAKANO H TANAKA M TANJI K USUKI Y
Citation
K. Hara et al., LA-DOPED PBWO4, SCINTILLATING CRYSTALS GROWN IN LARGE INGOTS, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 414(2-3), 1998, pp. 325-331
Citations number
7
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
414
Issue
2-3
Year of publication
1998
Pages
325 - 331
Database
ISI
SICI code
0168-9002(1998)414:2-3<325:LPSCGI>2.0.ZU;2-H
Abstract
We achieved a significant increase in the ingot size of La-doped PbWO4 single crystals to 65 mm in diameter and 300 mm in length by using th e Czochralski technique and three times of recrystallization. Four blo cks each with a typical size of 20 x 20 x 230 mm(3) were taken from an ingot. The optical as well as the scintillation characteristics of th e large-size crystals, including the radiation hardness, were found to be similar to or even better than those of smaller crystals. The radi ation-induced absorption coefficient mu(ir) was as small as 0.5-1 m(-1 ) at 10(7) rad of Co-60 gamma-ray irradiation. (C) 1998 Elsevier Scien ce B.V. All rights reserved.