You are welcome to study our new model range of HPGe detectors with extended energy range and over-square shape Germanium crystals. Detectors provide ability to reach lower limit of energy range by having thin contact and different types of input windows like Beryllium or Carbon Fiber. Another notable advantage is improved resolution in lower part of energy range. For example, from 100 keV to 700 keV. More information is available by following the link HPGe detectors with extended energy range GCDX.