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Дата изменения: Wed Aug 28 16:44:46 2002 Дата индексирования: Tue Oct 2 01:20:13 2012 Кодировка: Поисковые слова: propulsion |
Main parameters of Gamma Ray Spectrometer
Parts of GRS facility |
Physical parameters and characteristics |
Gamma Ray Spectrometer [GRS] with cooled germanium detector |
Detector is high-purity germanium 32Ge (67 mm x 67 mm); Spectral resolution of nuclear lines dE/E~10-3;
Spectroscopy of gamma-ray emission from Mars in 16000 channels at the energy range 300-8000 keV; |
Neutron Spectrometer - [NS] |
BC 454 scintillation detector with 4 sections for Doppler filtering of thermal neutrons;
Sensitivity of mass content of hydrogen at the level of 10-3 in 1 m layer of Martian surface; |
High Energy Neutron Detector - [HEND] |
Three proportional counters of 3He with different thickness moderators for detection of neutrons at energy ranges: 0.4- 10.0 eV, 10.0 eV -1.0 keV and 1.0 keV- 1.0 MeV;
Scintillation detector for fast neutrons at energies 1,0 –10,0 MeV, for gamma-rays at energy range 60 keV – 2 MeV and for hard X-rays at energy range 30 keV – 1 MeV;
Sensitivity of mass content of hydrogen at the level of 10-3 in 1 m layer of Martian surface with spatial resolution 300 km; |