142IH Preamplifier

• Charge-sensitive for universal applications
• Economical and general purpose
• Accepts 0 to ±3 kV bias
• Low noise and fast rise time
• Built-in protection network
• Small size
• Operates in vacuum

The ORTEC Model 142IH charge-sensitive preamplifier is an economical and general-purpose instrument that can be used for universal applications such as x-ray, low- and high-energy gamma-ray spectroscopy, and also for alpha and other charged-particle spectroscopy.

The Model 142IH may be used with semiconductor radiation detectors, proportional counters, ionization chambers, and low-gain photomultiplier tubes.

It will accommodate any detector capacitance up to 2000 pF. Thus the unit is ideally suited for high-resolution spectroscopy applications.

The preamplifier includes a built in protection network to prevent damage to the input FET from inadvertently applied overvoltages. Its small size also allows it to operate in experimental vacuum enclosures when required.

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