Significant improvement of PbWO

M. Kobayashi, Y. Usuki, M. Ishii, N. Senguttuvan, K. Tanji, M. Chiba, K. Hara, H. Takano, M. Nikl, P. Bohacek, S. Baccaro, A. Cecilia, M. Diemoz

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Abstract

Doping by different trivalent ions (La3+, Lu3+, Gd3+, Y3+, Sc3+) was systematically studied in PbWO4crystals in the same way, using raw material from the same source. The result was compared with an undoped sample (actually a Pb-rich one) and samples doped with divalent (Cd2+) and pentavalent (Nb5+) ions. All the trivalent ions but Sc3+gave a significant improvement in transmittance in the short wavelength region (330-450 nm) and in radiation hardness. Among all the tested dopants, Y3+and Gd3+showed the best result; these dopants may be worth further studies, since they have another advantage of the segregation coefficient close to unity.
Original languageEnglish
Pages (from-to)412 - 423
Number of pages12
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume434
Issue number2
DOIs
Publication statusPublished - 21 Sep 1999
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

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