Two-dimensional radiation detector

Abstract

Abstract PURPOSE:To elevate the spatial resolution with respect to the intensity distribution of radiation by significantly checking the cross talk of light and that of radiation due to the Compton effect. CONSTITUTION:An NaI (Tl) film 15, an Al thin film 16 and an acryl plate 17 are bonded together with an adhesive to form a 3-layer structure. Then, a groove 18 is formed with a mechanical cutter and a CO2 laser. An optical fiber 11 is connected and the groove 18 is filled with Pb 14 to complete a two-dimensional radiation detector. Light is generated from an NaI (Tl) film 15 by an incident X ray (as indicated by X in the drawing). This light is introduced into the optical fiber 11 directly or reflected with the Al thin film 16. The Pb 14 filled and the Al thin film 16 combine to isolate isolation regions of the NaI (Tl) 15 thereby significantly checking the cross-talk of light. The Pb 14 also permits the separating of isolation regions in the NaI (Tl) film 15 thereby drastically checking the cross talk of radiation due to the Compton effect.

Inventors

• 👤 Yujiro Naruse
• 👤 雄二郎 成瀬
• 👤 Tetsuji Kobayashi
• 👤 小林　哲二

Bibliographic Details