Abstract: A radiation detection apparatus that utilizes a radiation sensor device that includes a scintillator device that is optically coupled to a plurality of silicon drift detector devices. Each silicon drift detector device segment includes an output anode that supplies the segment output to dedicated sensor processing circuitry. With each anode having dedicated processing circuitry, each output can be processed simultaneously. Also provided is a spectroscopic analysis device that is coupled with the sensor processing circuitry for computing spectral data associated with the radiation detection event. The spectroscopic analysis device accurately characterizes the detected radionuclide and prepares the results for display before the user. Networking capabilities also allow multiples of such apparatuses to communicate in an intelligent grid, providing even greater radionuclide characterization capabilities.