Abstract

By using the micro-pulling down (μ-PD) method, the barium magnesium fluoride (BaMgF <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> ) single crystalline scintillator was produced. The crystal was cut and mirror polished to the physical dimensions of 1× 2× 10 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> for examination of optical and scintillation properties. BaMgF <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> exhibited more than 70 % transmittance in wavelength range from 170 to 2500 nm, and strong emission peaking around 205 nm was observed under X-ray excitation. The absolute light yield of BaMgF <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> was 1300±100 ph/MeV, and the decay time profile showed two components as 0.45 (76 %) and 1.4 (24 %) ns at room temperature.

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