AN ALL-GLASS PLANAR ELECTRON-OPTICAL INTENSIFIER WITH A MICROCHANNEL PLATE

The design of an all-glass electron-optical intensifier (EOI) with a m icrochannel plate, whose main parts are made of glass and quartz, is d escribed. The bases of the photocathode and screen are sealed to the c ase with the help of hard-tipped indium gaskets pressed against the me tallized surfaces of the jointed parts. Owing to this technique, the E OI assembling accuracy depends only on the manufacturing accuracy of i ts individual units. Utilizing the Cr-Cu sublayer, along with the main indium layer for sealing the EOI units, ensures a stable coating with good adhesion over a wide temperature interval from -50 to 400 degree s C. Based on the described design and technology, experimental EOIs w ith an active area diameter of 24 mm, a case diameter of 40 mm, and a height of 13 mm, were manufactured. The spectral band of the EOI sensi tivity ranges from 200 to 850 nm and resolution equals 20 mm(-1).