Spectroscopic measurements with a silicon drift detector having a continuous implanted drift cathode-voltage divider

A silicon drift detector (SDD) prototype where the drift electrode also plays the role of a high-voltage divider has been realised and characterised for spectroscopic applications at near-room temperatures. Among the advantages of this design, is the absence of metal on the sensitive surface which makes this detector interesting for soft X-rays. The detector prototype has a large sensitive area (2×130 mm2) and the charge is collected by two anodes (butterfly-like detector). ergy resolution of a such a detector has been investigated at near-room temperatures using a commercial, hybrid, low-noise charge-sensitive preamplifier. The results obtained for the X-ray lines from 55Fe and 241Am are presented.