| 摘要 |
<p>A radiation detection apparatus (10), such as for the detection of infrared radiation, is formed of inner and outer cylindrical stainless steel vessels (11, 19) with the inner vessel (19) supported from the top wall (13) of the outer vessel (11) by a thin, relatively long stainless steel tube (24). A heat transfer mounting member (33) is attached to the bottom of the inner vessel (19) and extends outwardly and then upwardly between and out of contact with the vessels to the position of a window opening within the outer vessel (11). A detector device (36) is affixed in good thermal contact with the mounting member (33) at the position of the window (17) and thus is maintained substantially at the temperature of the bottom surface of the inner vessel. The surfaces of the inner and outer vessels may be highly polished to prevent heat transfer to the inner vessel by infrared radiation. The use of stainless steel for the outer vessel also allows utilization of a vacuum port window structure (15) having a metal gasket (47) to minimize potential gas infiltration.</p> |
