![]() ![]() 0008 ph/cm/s square (coaxial array: 80 to 2000 keV) and less than or approximately. In a typical one day balloon flight, LEGS sensitivity limit (3 sigma) for narrow line features is less than or approximately. In the other configuration, three planar detectors (effective area equal to or approximately square cm) surrounded by a combination of passive Fe and active NaI for shielding and collimation (field of view equal to or approximately 5 deg x 10 deg FWHM) are optimized for the 20 to 200 keV energy range. In one configuration, the instrument uses an array of three coaxial detectors (effective volume equal to or approximately 230 cubic cm) inside an NaI (T1) shield and collimator (field of view equal to or approximately 16 deg FWHM) and operates in the 80 to 8000 keV energy range. The instrument is configured for a particular balloon flight with either of two sets of high purity germanium detectors. The Low Energy Gamma ray Spectrometer (LEGS) is designed to perform fine energy resolution measurements of astrophysical sources. The comparisons show the advantages of the present design in the energy range below 300 keV and its competitiveness up to 1500 keV.Ī balloon-borne instrument for high- resolution astrophysical spectroscopy in the 20-8000 keV energy range Our results indicate that energy resolution should be included in the definition of the figure of merit and we relate the new definition to earlier work. The sensitivity, efficiency, and energy resolution are reported. Polarization measurements at energies as low as 84 keV have been achieved, where the sensitivity was 0.32Â☐.09. #AGFA STRUCTURIX D4 INDUSTRIAL X RAY 8X10 SERIES#Its performance is demonstrated in a series of calibration measurements using both unpolarized radiation from radioactive sources and polarized γ rays from the 168Er(α,2n)170Yb reaction at Eα=25 MeV. ![]() ![]() It is a compact planar device with the sectors defined electrically, and which gives an energy resolution in the add-back mode of 1 keV at 300 keV. An integrated polarimeter is described which is constructed from a single crystal of germanium. Parameters which govern the choice of a detection system to measure the linear polarization of γ rays at low energies are discussed. High- resolution integrated germanium Compton polarimeter for the γ-ray energy range 80 keV-1 MeV ![]()
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