scholarly journals XSPECT: A Telescope/Spectrometer System on SPECTRUM RÖNTGEN GAMMA

1990 ◽  
Vol 115 ◽  
pp. 307-317
Author(s):  
Herbert W. Schnopper
Keyword(s):  
Narrow Band Imaging ◽  
Focal Length ◽  
Imaging Spectroscopy ◽  
Thin Foil ◽  
Spectroscopic Studies ◽  
Space Research ◽  
Space Research Institute ◽  
Wide Range ◽  
Spectrometer System ◽  
Research Institute

AbstractThe SPECTRUM RÖNTGEN-GAMMA mission is being developed by the Babakin Center (BC) together with the Space Research Institute (IKI) of the Academy of Sciences, USSR and is scheduled for launch in 1993. Mission objectives include broad and narrow band imaging spectroscopy over a wide range of energies from the EUV through gamma rays with particular emphasis on the study of extragalactic objects. The Danish Space Research Institute (DSRI) BC and IKI share the responsibility for the preparation of the XSPECT system. Two thin foil telescopes which are conical shell approximations to Wolter 1 geometry, each with an aperture of 60 cm and a focal length of 8 m, are designed to have a half-power width of less than 2 arcmin and will have collecting areas of 1700 and 1200 cm at 2 and 8 keV, respectively. Images and spectra will be recorded with position sensitive proportional counters with good spectral resolution. An objective Bragg crystal panel, placed in front of one of the telescopes, will make high resolution spectroscopic studies (E/ΔE ~103) of point- and extended sources. Other instruments are under consideration.

scholarly journals Sodart Telescope on Spectrum-Röntgen-Gamma and its Instrumentation

1990 ◽  
Vol 123 ◽  
pp. 119-128
Author(s):  
Herbert W. Schnopper
Keyword(s):  
Soviet Union ◽  
Spectral Resolution ◽  
Narrow Band Imaging ◽  
Focal Length ◽  
Broad Band ◽  
Imaging Spectroscopy ◽  
Thin Foil ◽  
Spectroscopic Studies ◽  
The Soviet Union ◽  
Wide Range

AbstractSPECTRUM-RÖNTGEN-GAMMA (SRG) is one of a new series of large astronomical missions being planned by the Soviet Union and is scheduled for launch in mid-1993. The Space Research Institute (IKI) of the Academy of Sciences of the USSR and the Babakin Center (BC) are responsible for the scientific supervision and spacecraft construction, respectively. Mission objectives include broad and narrow band imaging spectroscopy over a wide range of energies from EUV through gamma rays with particular emphasis on extragalactic objects. The design of the Soviet Danish Röntgen Telescope (SODART) consists of two thin foil, conical shell approximations to Wolter 1 geometry. The reflectors are rolled aluminum foils which have been dipped in acrylic lacquer and coated with gold resulting in a super smooth surface. Each telescope has an aperture of 60 cm, a focal length of 8 m, a field of view of 1 deg and is designed to have a halfpower width of ≤2 arcmin. The conical geometry contributes 15 arcsec and manufacturing tolerances in the support structure and the quality of the figure of the foil the rest. The contribution from X-ray scattering is insignificant. Focal plane slides can position one of four instruments at the focus of each telescope. Images and spectra will be recorded with position sensitive proportional counters with spectral resolution as good as 13% at 6 keV. Spectral resolution of 2.5% at 6 keV is provided by an array of 19 cooled silicon detectors. A broad band polarimeter will be sensitive to residual polarization as low as 1%. An objective Bragg crystal panel, placed in front of one of the telescopes, will be capable of high resolution spectroscopic studies ((E/ΔE)) ~1000) of point- and extended sources.

scholarly journals SIXA: The Solid State Spectrometer Array Onboard Spectrum-X-Gamma

1990 ◽  
Vol 123 ◽  
pp. 433-438 ◽  
Author(s):  
O. Vilhu ◽  
H. Sipilä ◽  
V.J. Kämäräinen ◽  
I. Taylor ◽  
E. Laegsgaard ◽  
...  
Keyword(s):  
Solid State ◽  
Supernova Remnants ◽  
Cooling System ◽  
Space Research ◽  
Solid State Detector ◽  
Iron Line ◽  
X Ray ◽  
Space Research Institute ◽  
Wide Range ◽  
Research Institute

AbstractThe SPECTRUM - X-GAMMA mission is being developed by the Space Research Institute (IKI), USSR, together with many other countries and is scheduled for launch in 1993 ( Sunyaev,1990; Schnopper,1990). Mission objectives include broad and narrow band imaging spectroscopy over a wide range of energies from the EUV through gamma rays, with an emphasis on studying galactic and extragalactic X-ray sources. The Danish Space Research Institute (DSRI) and IKI will provide two thin-foil X-ray telescopes (SODART), each with an aperture of 60 cm and focal length of 8 m. They are designed to have a half-power width of less than 2 arc minutes and will have collecting areas of 1700, 1200 and 100 cm2 at 1, 8 and 20 keV, respectively. Images and polarization will be recorded by position-sensitive proportional counters. Moderate resolution spectroscopy will be done by the segmented solid state detector SIXA (Silicon X-ray Array), designed and to be constructed by a consortium in Finland, Denmark and USSR. Finland will have the main responsibility in financing and delivering the detector. The Institute of Electromechanics in Moscow will provide its passive cooling system (110 K). The detector will consist of 19 segments (Si(Li)), each with a diameter of about 8 mm. The spectral resolution of 160 eV (at 6 keV), combined with the large collecting area, provide good opportunities for time-resolved iron line spectroscopy ( 6-8 keV). The potential observing program includes stellar coronae, cataclysmic variables and X-ray binaries, accretion discs and coronae of neutron stars and black hole candidates, supernova-remnants, active galactic nuclei, clusters of galaxies and the diffuse cosmic X-ray background. We demonstrate the instrument’s power through some astrophysical simulations.

Galeev to Head Space Research Institute

Science ◽  
1988 ◽  
Vol 242 (4884) ◽  
pp. 1376-1376
Author(s):  
M. Mitchell Waldrop
Keyword(s):  
Space Research ◽  
Head Space ◽  
Space Research Institute ◽  
Research Institute

X-Ray Gas Detector Development At The Danish Space Research Institute

1988 ◽  
Author(s):  
C. Budtz-Jorgensen ◽  
M. M. Madsen ◽  
P. Jonasson ◽  
H. W. Schnopper ◽  
A. Oed
Keyword(s):  
Space Research ◽  
X Ray ◽  
Space Research Institute ◽  
Gas Detector ◽  
Research Institute

scholarly journals Solidification Furnace Developed for Sounding Rockets: Rio Verde Mission

2019 ◽  
Author(s):  
Rafael Cardoso Toledo ◽  
Manuel Francisco Ribeiro ◽  
Irajá Newton Bandeira ◽  
Chen Ying An
Keyword(s):  
Parabolic Flight ◽  
Space Research ◽  
Metal Alloys ◽  
Sounding Rocket ◽  
Sounding Rockets ◽  
Space Research Institute ◽  
Solidification Furnace ◽  
Research Institute

Brazil has a Microgravity Program mainly based on experiments using sounding rockets. Up to now, four missions have been carried out with approximately 35 experiments submitted in total. In all flights, the Associate Laboratory of Sensors and Materials of the Brazilian Space Research Institute (LABAS/INPE) participated with a fast solidification furnace, capable of producing temperatures up to 900 °C, which was tested with semiconductor and metal alloys. This paper describes the construction and the performance of that furnace during the last parabolic flight, Rio Verde Mission, occurred in 2016. The solidification furnace is now qualified and ready to be used by other institutions in sounding rocket flights.

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