La-doped PbWO4 scintillating crystals grown in large ingots

Kazuhiko Hara, Mitsuru Ishii, Masaaki Kobayashi, Martin Nikl, Hideaki Takano, Masashi Tanaka, Kiyokazu Tanji, Yoshiyuki Usuki

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)

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 the Czochralski technique and three times of recrystallization. Four blocks each with a typical size of 20 × 20 × 230 mm3 were taken from an ingot. The optical as well as the scintillation characteristics of the large-size crystals, including the radiation hardness, were found to be similar to or even better than those of smaller crystals. The radiation-induced absorption coefficient μir was as small as 0.5-1 m-1 at 107 rad of 60Co γ-ray irradiation.

Original languageEnglish
Pages (from-to)325-331
Number of pages7
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume414
Issue number2-3
DOIs
Publication statusPublished - 1998 Sep 11
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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