تقرير
Proportional counter windows for the Bragg Crystal Spectrometer on AXAF
| العنوان: | Proportional counter windows for the Bragg Crystal Spectrometer on AXAF |
|---|---|
| المؤلفون: | Markert, T. H, Bauer, J. M, Canizares, C. R, Isobe, T, Nenonen, S, O'Connor, J, Schattenburg, M. L, Flanagan, K. A, Zombeck, M. V |
| المصدر: | In: EUV, X-ray, and gamma-ray instrumentation for astronomy II; Proceedings of the Meeting, San Diego, CA, July 24-26, 1991 (A93-34376 13-35). |
| بيانات النشر: | United States: NASA Center for Aerospace Information (CASI), 1991. |
| سنة النشر: | 1991 |
| مصطلحات موضوعية: | Optics |
| الوصف: | A Bragg Crystal Spectrometer (BCS) using a gas flow proportional counter as its primary detector is among the instruments under development for AXAF. The BCS will employ windows of 1-micron-thick polyimide coated on both sides with 200 A of Al; this window composition, while X-ray transmitting, will leak gas at a lower rate than the polypropylene film-based windows formerly employed. Accounts are given of the results obtained with additional innovative X-ray window materials currently under development, including diamond and Si-enriched Si3N4. |
| نوع الوثيقة: | Report |
| اللغة: | English |
| URL الوصول: | https://ntrs.nasa.gov/citations/19930050401 |
| ملاحظات: | NAGW-2003 NAS8-36748 |
| رقم الأكسشن: | edsnas.19930050401 |
| قاعدة البيانات: | NASA Technical Reports |
| الوصف غير متاح. |