Method for producing a scintillator ceramic

US5296163A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Juergen Leppert · Forchheim, DE
• Wolfgang Rossner · Holzkirchen, DE

Key dates

• Filing date: Jul 26, 1993
• Grant date: Mar 22, 1994
• Expiry date: Jul 26, 2013

Classification

• Technology area (CPC G): Physics
• CPC primary: G21K2004/06
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

For manufacturing a scintillator ceramic of a rare earth oxisulfide, a pigment powder is compressed by single-axis hot-pressing to form a ceramic member having at least 99.9% of the theoretic density, the pigment powder having the general formula (M.sub.1 xLn.sub.x).sub.2 O.sub.2 S, whereby M denotes at least one element from the group Y, La and Gd, Ln represents at least one element from the group Eu, Ce, Pr, Tb, Yb, Dy, Sm and Ho, and whereby 1.times.10.sup.-6 .ltoreq.x.ltoreq.2.times.10.sup.-1, and the powder having a specific surface according to BET of at least 10 m.sup.-2 /g.