An investigation into the development of Graphene X-ray intensity detectors for use with soft X-rays in synchrotron radiation

P.T. Docker, J. Kay, J. Edgeworth
Diamond light source, UK

Keywords: craphene sensors X-ray detection


There is an increasing requirement for a soft X-ray beam intensity detector for synchrotron applications. Such a detector needs to allow for the beam to travel through the detector with minimum attenuation, with only a small amount of its energy being converted to an electrical signal to indicate the beam’s intensity. Graphene offers unique properties that can be developed to fulfil this application the first being minimal X-ray beam attenuation. The literature describes two key approaches that have employed graphene for the detection of electromagnetic radiation. This work describes them both before going on to detail the initial production route for graphene that has already been developed by the authors. Neither of the detection methods described in the literature have been used to detect irradiation in the soft X-ray regime. It is the aim of the authors to develop a sensor that is suitable for detecting these energies (250-3000eV). The impact of the work will be to exploit graphene to be able to determine energies entering a sample when using soft X-ray imaging at the world’s synchrotron light sources.