detector was designed with an active surface of 12mm
2
and thickness of about 300µm. The working condition is in 600V bias voltage
with pulse shaping time 3 µs using an uncollimated source and at room temperature the obtained energy resolution (FWHM) of the detector is 2.4 keV for 59.5 keV X-rays of
241
Am (4%) .
The applicability of mercuric iodide detectors is discussed.