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The INTEGRAL spectrometer SPI
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The INTEGRAL spectrometer: SPI

January 5, 2013
Date: 25 Sep 2002 Satellite: INTEGRAL Depicts: SPI Copyright: ESA The spectrometer SPI (Spectrometer on INTEGRAL) is 100 times more sensitive than the previous high spectral-resolution space instruments. SPI performs spectral analysis of gamma-ray point sources and extended regions over an energy range between 20 keV and 8 MeV with an unprecedented energy resolution of 2.2 keV (FWHM) at 1.33 MeV.