IODIDE SINGLE CRYSTAL, METHOD FOR PRODUCTION THE IODIDE SINGLE CRYSTAL, AND SCINTILLATOR COMPRISIN

文件类型：PDF文档
文件大小：1649K
Disclosed is an iodide single crystal which has the same crystalline structure as that of LuI3, which is activated at its luminescent center RE [wherein RE represents at least one element selected from the group consisting of Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm and Yb], and wherein one or some or all of lutetium (Lu) atoms in the iodide single crystal are substituted by Y and/or Gd. Also disclosed is a method for producing an iodide single crystal, which comprises the steps of : preparing a starting material comprising an RE metal or REI3, I2 and a metal of at least one element selected from the group consisting of Lu, Y and Gd and/or an iodide of the element (provided that when only Lu is selected as the element, only metal Lu is employed); maintaining the starting material under reduced pressure; heating the starting material at a reaction temperature to produce a raw material polycrystal comprising at least XI3 : RE [wherein X represents the above-mentioned at least one element]; and converting the raw material polycrystal into a single crystal.