Effects of interference and oxidation on the UV/visible rejection properties of filters for soft x-ray detectors

被引：16

作者：

Barbera, M

Collura, A

Dara, A

Leone, M

Powell, FR

Serio, S

Varisco, S

Zombeck, MV

机构：

[1] CNR,IST APPL INTERDISCIPLINARI FIS,PALERMO,ITALY

[2] UNIV PALERMO,IST FIS,PALERMO,ITALY

[3] LUXEL CORP,FRIDAY HARBOR,WA

[4] HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138

来源：

EXPERIMENTAL ASTRONOMY | 1997年 / 7卷 / 01期

关键词：

x-ray; calibration; filters; interference; oxidation;

D O I：

10.1023/A:1007919005280

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on UV/Visible transmission measurements of aluminum coated Lexan filters designed as UV blocking filters for soft x-ray detectors. Transmission of the filters in the 2300 - 8000 A wavelength range is significantly higher than expected. It cannot be accounted for applying a simple slab model of the transmission and adopting material properties reported in the literature. We show that this is due to interference effects which are strongly dependent on the filter geometry, and to oxidation of exposed aluminum surfaces and/or chemical interaction with the plastic support. The results of this work have led to the redesign of the Advanced X-ray Astrophysics Facility High Resolution Camera UV blocking filters.

引用

页码：51 / 63

页数：13

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