Patent ID: 8575750

Claim:
A semiconductor Gamma Ray detector comprising: a cylindrical semiconductor body of crystal construction having two ends at one end a center hole is formed that extends from said one end of said cylindrical semiconductor body and stops just prior to the other end of said cylindrical semiconductor body; a second hole of a coaxial groove construction is formed in said cylindrical semiconductor and extends from said other end of said semiconductor body and stops just prior to said one end of said cylindrical semiconductor body; a first electrode formed on the inner surface of said center hole and covers said one end of said cylindrical semiconductor body as well as the main outer body of said cylindrical semiconductor body; a second electrode formed on the inner surface of said coaxial groove and on said other end of said cylindrical semiconductor body that is surrounded by the opening of said second hole of coaxial groove construction; and a passivation layer formed on said other end of said cylindrical semiconductor body that lies outside the opening formed by the opening of said second hole of coaxial groove construction; wherein said cylindrical semiconductor body forms two radial layers of a coaxial nature that are folded back on one another.