Abstract:
A crucible provided with a holding section (12) for holding a raw material (20), an initial distillate recovery section (14) for recovering an initial distillate (24) when the raw material (20) held in the holding section (12) has been vaporized, a main distillate condensing section (16) for condensing a main distillate when the raw material (20) held in the holding section (12) has been vaporized, and a crystal growing section (18) for holding the main distillate (30) comprising a raw material melt (28) condensed by the main distillate condensing section (16) and producing crystals when crystals are grown from the held main distillate (30) is used as a crucible (10) for crystal growth used to grow crystals. This makes it possible to raise the efficiency of manufacturing crystals while achieving high purification of a raw material for semiconductor crystals.
Abstract:
This radiation detection element (1) is provided with: a crystal part (10) that is formed from a mixed ion-electron conductor, which is a compound wherein thallium ions are bonded with bromine ions; a metal electrode (13a) that is formed on one surface of the crystal part (10); and a metal electrode (13b) that is formed on a surface which is on the reverse side of the surface where the metal electrode (13a) is formed. The crystal part (10) has metal-containing parts (12) in the surfaces where the metal electrodes (13a, 13b) are respectively formed, said metal-containing parts (12) containing thallium that is obtained by selectively removing elemental bromine and neutralizing thallium ions. Consequently, there are provided: a practical radiation detection element which is suppressed in the occurrence of problems caused by polarization; and a method for producing this radiation detection element.