3/27/2023 0 Comments Irad geiger![]() ![]() Radiation incidents on a smartphone camera’s Complementary Metal Oxide Semiconductor (CMOS) sensor creates a signal which can be isolated from a visible light signal to turn the smartphone into a radiation detector. For Permissions, please email: advanced image sensors installed on now-ubiquitous smartphones can be used to detect ionising radiation in addition to visible light. Photon impact angle variation gave a measured signal variation of only about 10 %. A considerable energy dependence was observed below 100 keV but not for the higher energy range more relevant for incident scenarios. ![]() Most applications significantly over- or underestimate the dose rate or are not calibrated in terms of dose rate. All applications exhibited a flat dose rate response in the studied ambient dose equivalent range from 2 to 1000 μSv h(-1). It was shown that the measurement stabilises only after at least 10-25 min. Six applications were tested by means of irradiations with calibrated X-ray and gamma sources. However, it is important to assess these applications. They are potentially useful for data collection and personal dose assessment in case of a radiological incident. These applications measure radiation using the smartphone camera complementary metal-oxide-semiconductor sensor. During the past years, several smartphone applications have been developed for radiation detection. ![]()
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