Ultra-Thin Diamond Films For X-Ray Window Applications

Diamond possesses a number of interesting properties that make it an ideal candidate for a variety of x-ray optical applications. Most notable are the high x-ray transmission, exceptional mechanical properties and low diffusion rate of diamond films. One application that has been made possible recently with plasma-enhanced chemical vapor deposition of diamond films is an ultra-thin x-ray detector window for elemental analysis. This paper discusses the advantages of using diamond films for this application and what developments were necessary in order to meet performance specifications. We will also discuss qualification testing of the x-ray window and suggest other areas of application which may benefit from this new technology.