Diamonds Utilized in the Development of Single Ion Detector with High Spatial Resolution

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We are developing the Ion Photon Emission Microscopy (IPEM) system at JAEA. To observe a map by IPEM, the position where an ion strikes a scintillator placed over a microelectronics circuit is recorded together with the ion induced event. Since the spatial resolution is determined by the spot size of the Ion Beam Induced Luminescence (IBIL), the scintillator is one of the most important parts of IPEM. In this study we propose that a diamond containing a high concentration of Nitrogen Vacancy (NV) centers can be used as a scintillator with high spatial resolution. For both Y3Al5O12:Ce (YAG:Ce) and the diamond containing NV centers, the minimum spot size is a few micrometers. The IBIL intensity from the diamond containing NV centers is higher than that from YAG:Ce. According to these results, we suggest that a diamond containing NV centers is a rival candidate of a YAG:Ce from the point of view of single ion detection with high spatial resolution.
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