Accession Number : ADD013253

Title :   Vacuum Tight Window Through Which a High Power Laser Beam and a High Energy Particle Beam Can be Transmitted Within Close Proximity to Each Other.

Descriptive Note : Patent, Filed 9 Sep 82, patented 22 May 84,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Kimura, Wayne D

Report Date : 22 May 1984

Pagination or Media Count : 6

Abstract : This patent discloses an apparatus and method by which a high-power laser beam and a high-energy particle beam may enter or exit a region, typically filled with gas, to or from another region, typically under vacuum. The two beams are spaced about 3-4 mm apart center-to-center at the entry point and no gas is permitted to leak into the vacuum region. A disc of material capable of resisting high radiation fluxes without forming color centers is sealed into a metallic holding block. Prior to sealing of the disc, a hole approximately 0.16 cm is drilled into the disc while the disc is tilted at or above Brewster's angle forming an elliptical hole. A thin film, approximately 6000 A, indium metallization is sputtered in a circular pattern about the hole and around the edges of a beryllium disc. An indium disc is then sandwiched between the disc with the hole and the beryllium disc touching the indium metallization on each piece.

Descriptors :   *PATENTS, *WINDOWS, *LASER BEAMS, *PARTICLE BEAMS, *FREE ELECTRON LASERS, VACUUM SEALS, INDIUM, BERYLLIUM, CROSS SECTIONS

Subject Categories : Nuclear Physics & Elementary Particle Physics
      Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE