학술논문
The INTEGRAL spectrometer SPI.
Document Type
Article
Author
Source
Subject
*GAMMA ray spectrometer
*GAMMA rays
*ASTROPHYSICS
*
*
Language
ISSN
0888-6512
Abstract
ABSTRACT: The INTEGRAL spectrometer SPI features a compact array of high purity Germanium detectors cooled by a Stirling cooler system and shielded by a BGO anticoincidence system. A coded mask modulates the astrophysical signal. In the energy range between 20 keV - 8 MeV SPI will perform spectral analysis of high-energy sources such as supernovae remnants, novae, compact Galactic sources, annihilation sites, Active Galactic Nuclei etc. The anticipated performance for narrow line spectroscopy is characterized by an energy resolution in the parts per thousand range, an angular resolution of order 2.5° within a fully coded field of view of 160°, and a sensitivity 3-7-10[sup -6] ph cm[sup -2] s[sup 1] in the energy range relevant for nuclear astrophysics. [ABSTRACT FROM AUTHOR]