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Growth and Spectrometric Tests on Bi 4 Ge 3 O 12 Crystals
Author(s) -
Dafinei I.,
Mitroaica Gh.,
Angelescu T.,
Niculescu I.
Publication year - 1992
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170270702
Subject(s) - crucible (geodemography) , scintillator , monte carlo method , czochralski method , materials science , crystal growth , analytical chemistry (journal) , micro pulling down , crystal (programming language) , crystallography , chemistry , detector , optics , physics , mathematics , chromatography , computational chemistry , statistics , programming language , computer science
A resistance‐heated furnace with a good control of temperature gradients is used for the Czochralski growth of precipitate and colour free Bi 4 Ge 3 O 12 (BGO) crystals up to 30 mm in diameter and 80 mm in length from a 45 mm diameter crucible. The quality of the grown crystals is discussed in connection with the growth conditions. Spectrometric tests made on scintillators obtained from BGO crystals are presented. A Monte Carlo program is used in order to compute the full energy peak efficiency of the detector for different energies and geometries. The computed values are compared to the experimental results.