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http://hdl.handle.net/20.500.12386/27403
Titolo: | Ion beam figuring of thin glass plates: achievements and perspectives | Autori: | CIVITANI, Marta Maria GHIGO, Mauro Hołyszko, J. VECCHI, Gabriele BASSO, Stefano |
Data pubblicazione: | 2016 | Titolo del volume in cui è pubblicato il poster: | Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray | Curatore/i del volume in cui è pubblicato il contributo: | den Herder, Jan-Willem A.; Takahashi, Tadayuki; Bautz, Marshall | Serie: | PROCEEDINGS OF SPIE | Numero: | 9905 | Da pagina:: | 990578 | Abstract: | Different hot slumping techniques have been developed in the last decade to shape thin glass plates in Wolter-I configuration for high angular resolution x-ray telescopes. The required high quality surface characteristic, both in terms of figure error and of micro-roughness, is challenging and the best results achieved so far are compatible with an HEW of few arcseconds. In order to push forward the technology enabling x-ray optics with final HEW below 1 arcsec, we investigate the ion beam figuring as a deterministic technology which can correct the low frequency components of the residual error directly on thin glasses. In this paper we present the tests performed so far, giving a first assessment on the deterministic process definition. In particular, we report on the results achieved on flat samples of D263 and Eagle glass, focusing on the removal function characterization, the micro-roughness evolution and the plate shape variation. | Titolo del convegno: | Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray | Luogo del convegno: | Edinburgh, United Kingdom | Periodo del convegno: | 26 June - 1 July 2016 | URI: | http://hdl.handle.net/20.500.12386/27403 | URL: | https://www.spiedigitallibrary.org/conference-proceedings-of-spie/9905/1/Ion-beam-figuring-of-thin-glass-plates--achievements-and/10.1117/12.2233821.full | ISSN: | 0277-786X | ISBN: | 9781510601895 9781510619135 |
DOI: | 10.1117/12.2233821 | Bibcode ADS: | 2016SPIE.9905E..78C | Fulltext: | open |
È visualizzato nelle collezioni: | 3.01 Contributi in Atti di convegno |
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