Thick self-standing bent crystals as optical elements for a Laue lens for applications in astrophysics
| العنوان: | Thick self-standing bent crystals as optical elements for a Laue lens for applications in astrophysics |
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| المؤلفون: | Vincenzo Guidi, A. Mazzolari, Thomas Buslaps, M. Romagnoni, Riccardo Camattari, Gianfranco Paternò |
| المصدر: | Experimental Astronomy. 46:309-321 |
| بيانات النشر: | Springer Science and Business Media LLC, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Diffraction, Materials science, Bent molecular geometry, Physics::Optics, Synchrotron radiation, 02 engineering and technology, Astrophysics, Diffraction efficiency, 01 natural sciences, NO, law.invention, Crystal, law, 0103 physical sciences, 010303 astronomy & astrophysics, business.industry, Carbon fibre, Laue lens, Thick bent crystals, Astronomy and Astrophysics, Space and Planetary Science, 021001 nanoscience & nanotechnology, Lens (optics), Interferometry, Semiconductor, 0210 nano-technology, business |
| الوصف: | In this paper we report progresses in the realization of self-standing bent crystals, which are suitable as optical elements for Laue lenses, i.e. for optic to focus hard X-rays in the 100–1000 keV energy range. The curvature of the crystals is a key factor to enhance diffraction efficiency and energy bandpass for such an optic. In particular, two bent crystals featuring a thickness of 5 mm, made of Si and Ge respectively, were produced at the Sensor and Semiconductor Laboratory in Ferrara, Italy. The crystals were bent through the application of a carbon fibre composite. This proved to be a relatively low cost method for crystal bending, suitable for mass production. The manufactured samples were characterised via optical interferometry, and showed a fairly uniform curvature. Finally, the samples were tested exploiting hard X-ray diffraction at the ID11 facility of the European Synchrotron Radiation Facility (ESRF) in Grenoble, France. A careful analysis of the experimental data highlighted that the samples feature large energy bandpass, wide geometrical acceptance for incoming hard X-rays, and high diffraction efficiency. We therefore conclude that such self-standing crystals are good candidates as Laue lens components for astrophysics applications. |
| تدمد: | 1572-9508 0922-6435 |
| DOI: | 10.1007/s10686-018-9603-4 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec3e69ab69e7be0ac5eee07d672d787b https://doi.org/10.1007/s10686-018-9603-4 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....ec3e69ab69e7be0ac5eee07d672d787b |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15729508 09226435 |
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| DOI: | 10.1007/s10686-018-9603-4 |