Accession Number : AD0636530

Title :   ROCKET-BORNE AURORAL X-RAY INSTRUMENTATION.

Corporate Author : UTAH UNIV SALT LAKE CITY UPPER AIR RESEARCH LABS

Personal Author(s) : Howlett, L. Carl

Report Date : 28 FEB 1966

Pagination or Media Count : 76

Abstract : An X-ray detector suitable for inclusion in a rocket payload for X-ray studies must be capable of measuring X-ray flux and energy spectrum between 1 and 10 A. The instrument must also be insensitive to acceleration, temperature changes, vacuum, and a flux of up to 10 to the 8th power electrons/sec sq cm ster having energies from 1 to 50 kev. Three practical types of detectors suitable for rocket flight are energy selective Geiger tubes, scintillation spectrometers, and proportional counters. Geiger tubes which are made sensitive over a relatively narrow range of energies by careful selection of fill gas and window material provide outputs which are easily handled electrically but at the sacrifice of energy resolution. The proportional counter system has the best energy resolution but also the lowest level output and, therefore, requires considerable care in shielding from extraneous sources of electrical noise. Flight systems using scintillation spectrometers and proportional counters telemeter the amplified and broadened pulses directly from the detectors. (Author)

Descriptors :   (*SOUNDING ROCKETS, *NUCLEAR RADIATION SPECTROMETERS), (*X RAY SPECTROSCOPY, *AURORAE), ATMOSPHERIC SOUNDING, X RAY SPECTRA, ENERGY, MEASUREMENT

Subject Categories : Atmospheric Physics
      Nuclear Instrumentation
      Unmanned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE