Figure 1
From: In-situ γ-ray analysis of ground surface radioactivity using portable HPGe γ spectrometer
Schematic diagram of the detection model. The HPGe γ spectrometer was erected at a height of 1 m from the ground using a tripod, and the γ radiation source is placed at a horizontal distance of 0–6 m from the detector, and the interval is 1 m.
