X-ray spectrometer with SiLi detector Canberra Industries

Si(Li) detectors, which cover the energy range from a few hundred eV to 50 keV or so, are used in a wide variety of applications including x-ray fluorescence, x-ray microanalysis, PIXE, EXAFS, x-ray diffraction, and M%uFFFDssbauer.

The finest in semiconductor technology and cryogenics, combined with advanced signal processing electronics give CANBERRA Si(Li) detectors solid performance and reliability. Unlike early Si(Li) detectors and unlike those manufactured by some companies today, CANBERRA Si(Li) detectors are stable at room temperature so they can be shipped and stored without LN2.

CANBERRA Si(Li) detectors are available in two versions. The standard detector uses conventional geometry and a gold surface barrier entrance window. The Super Si(Li) uses a proprietary geometry and entrance window. This, along with a special shaping amplifier, improves resolution by at least 10 eV (FWHM) and increases the peak/background by about ten-fold to greater than 10,000:1.

CANBERRA offers a full complement of signal processing and data acquisition electronics. The detector includes a low-noise preamplifier of the pulsed-optical feedback type. This pre-amplifier employs a specially fabricated FET which is cooled along with the detector in a cryostat.

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