Author/Authors :
Akimov، نويسنده , , D.Yu. and Akindinov، نويسنده , , A.V. and Alexandrov، نويسنده , , I.S. and Belov، نويسنده , , V.A. and Borshchev، نويسنده , , O.V. and Burenkov، نويسنده , , A.A. and Danilov، نويسنده , , M.V. and Kovalenko، نويسنده , , A.G. and Luponosov، نويسنده , , Y.N. and Ponomarenko، نويسنده , , S.A. and Stekhanov، نويسنده , , V.N. and Surin، نويسنده , , N.M. and Zavʹyalov، نويسنده , , S.A. and Yablo، نويسنده ,
Abstract :
Development study of a wavelength shifter (WLS) to convert a noble gas emission light from the VUV region to the visible range is presented. The shifter is developed for the use with an array of blue-sensitive multipixel avalanche Geiger photodiodes (MRS APD) to detect Xe 175 nm emission. It was found that a polycrystalline p-terphenyl having an absorption peak at 180 nm with a molar extinction coefficient ε of 37500±5000 mol−1·l cm−1 is well suited for this. To satisfy a requirement of compatibility with an extra pure noble gas detection medium the p-terphenyl layer was coated with an ∼1 μm thick poly-para-xylylene protection film.
WLS with maximum of emission spectrum at 390 nm and at 420 nm is developed on the basis of a nanostructured organosilicon luminophore.
