The SPI Spectrometer for the integral mission

被引:4
作者
Vedrenne, G
Jean, P
Kandel, B
Albernhe, F
Borrel, V
Mandrou, P
Roques, JP
von Ballmoos, P
Durouchoux, P
Cordier, B
Diallo, N
Schönfelder, V
Lichti, GG
Diehl, R
Varendorff, M
Strong, AW
Georgii, R
Teegarden, BJ
Naya, J
Seifert, H
Sturner, S
Matteson, J
Lin, R
Slassi, S
Sanchez, F
Caraveo, P
Leleux, P
Skinner, GK
Connell, P
机构
[1] CESR, F-31028 Toulouse 4, France
[2] Ctr Etud Saclay, SAp, F-91191 Gif Sur Yvette, France
[3] MPE, D-85748 Munich, Germany
[4] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
[5] NASA USRA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
[6] Univ Calif San Diego, La Jolla, CA 92093 USA
[7] Univ Calif Berkeley, Berkeley, CA 94720 USA
[8] Univ Valencia, IFIC, E-46100 Burjassot, Spain
[9] CNR, IFC, I-20133 Milan, Italy
[10] Univ Catholique Louvain, Inst Phys Nucl, B-1348 Louvain, Belgium
[11] Univ Birmingham, Birmingham B15 2TT, W Midlands, England
来源
PHYSICA SCRIPTA | 1998年 / T77卷
关键词
D O I
10.1088/0031-8949/1998/T77/009
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
SPI (Spectrometer for INTEGRAL) is a high spectral resolution gamma-ray telescope to be flown on board the ESA mission INTEGRAL. It consists of an array of 19 closely packed Germanium detectors surrounded by an active anticoincidence shield of EGO. The imaging capabilities of the instrument are obtained with a tungsten coded aperture mask located 1.7 m from the Ge array. The fully coded field-of-view is 16 degrees and the angular resolution approximate to 2 degrees. The energy range extends from 20 keV to 8 MeV with a typical energy resolution approximate to 2 keV at 1 MeV. The point-source narrow-line sensitivity is estimated to be (3-7) x 10(-6) ph/cm(-2) s(-1) over most of the energy range of the instrument (E > 200 keV) for a 10(6) s observing time. With these expected performances a major step forward can be expected in fine gamma-ray spectroscopy of astrophysical objects.
引用
收藏
页码:35 / 38
页数:4
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