The X-ray Evolving Universe Spectroscopy mission (XEUS) the X-ray mirror design and technology

被引：9

作者：

Bavdaz, M ^{[1
]}

Beijersbergen, M ^{[1
]}

Peacock, A ^{[1
]}

Willingale, R ^{[1
]}

Aschenbach, B ^{[1
]}

Brauninger, H ^{[1
]}

机构：

[1] European Space Agcy, Estec, Dept Space Sci, SCI SA, NL-2200 AG Noordwijk, Netherlands

来源：

X-RAY OPTICS, INSTRUMENTS, AND MISSIONS II | 1999年 / 3766卷

关键词：

X-ray astrophysics; X-ray mirrors; future missions;

D O I：

10.1117/12.363665

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

To achieve the demanding aims of XEUS, which involve the detection of sources as faint as 10(-18) ergs cm(-2) s(-1) a large X-ray mirror will need to be developed. This core scientific aim implies that the XEUS mirror needs to have an effective collecting area at 1 keV of 30 m(2) coupled to a spatial resolution on-axis of between 2 and 5 arcsec (HEW), so as to avoid source confusion at these very faint flux levels. Finally a field of view of at least 5 arcmin must be covered so as to ensure that a significantly large population of high redshift x-ray sources can be observed in a single pointing over the energy band from 0.05 - 30 keV. Clearly the key characteristic of XEUS is the large X-ray mirror aperture coupled to the high spatial resolution. The XEUS mirror aperture of 10 m diameter is divided into annuli with each annulus subdivided into sectors. The basic mirror unit therefore consists of a set of heavily stacked thin mirror plates each retaining the correct geometry. This unit is known as a mirror petal and constitutes a complete free-standing calibrated part of the overall XEUS mirror.

引用

页码：94 / 102

页数：9

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