An Si/Li/ detector system for application to X-ray astronomy rocket experiments

Details An Si/Li/ detector system for application to X-ray astronomy rocket experiments An Si/Li/ detector system for application to X-ray astronomy rocket experiments

Feb 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975itns...22..611g&link_type=abstract

(IEEE, AEC, NASA, and NBS, Nuclear Science Symposium, 21st, Scintillation and Semiconductor Counter Symposium, 14th, and Nuclear

Computer Science

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Cryostats, Radiation Counters, Rocket-Borne Instruments, Telescopes, X Ray Apparatus, X Ray Astronomy, Avalanche Diodes, Feasibility Analysis, Field Effect Transistors, Metal Coatings, Parabolic Reflectors, Protective Coatings, Rocket Sounding, Skylark Rocket Vehicle, Spaceborne Telescopes

Scientific paper

The use of a Si(Li) detector for measuring low energy X-rays (0.3 to 2 keV) in rocket experiments is discussed. A typical laboratory detector cryostat using an Si(Li) diode is described, and determination of the optimum FET temperature in the cryostat is presented. An experiment using a Si(Li) detector to measure the characteristic X-ray lines excited from mica by a Po(210) alpha particle source is outlined along with methods to determine the silicon dead-layer thickness. Design parameters for detectors to be used in X-ray astronomy are summarized, including minimization of heat losses from the cryostat; ability to withstand accelerations of 3 g sinusoidal in all axes, between 100 and 2000 cps; reduction of microphonic pick-up to the absolute minimum; and use of a thin Al-coated foil to prevent optical and UV radiation from reaching the detector and contributing to the inverse current.

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