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Multilayer reflective polarizers for the far ultraviolet (Contributo in atti di convegno)

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Multilayer reflective polarizers for the far ultraviolet (Contributo in atti di convegno) (literal)

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Juan I. Larruquert ; José A. Aznárez ; Luis Rodríguez-de Marcos ; José A. Méndez ; A. Marco Malvezzi ; Angelo Giglia ; Paolo Miotti ; Fabio Frassetto ; Giuseppe Massone ; Stefano Nannarone ; Giuseppe Crescenzio ; Gerardo Capobianco ; Silvano Fineschi (2013)
Multilayer reflective polarizers for the far ultraviolet
in Damage to VUV, EUV, and X-ray Optics IV; and EUV and X-ray Optics: Synergy between Laboratory and Space III, prague, 15 april 2013
(literal)

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Juan I. Larruquert ; José A. Aznárez ; Luis Rodríguez-de Marcos ; José A. Méndez ; A. Marco Malvezzi ; Angelo Giglia ; Paolo Miotti ; Fabio Frassetto ; Giuseppe Massone ; Stefano Nannarone ; Giuseppe Crescenzio ; Gerardo Capobianco ; Silvano Fineschi (literal)

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http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1685679 (literal)

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Damage to VUV, EUV, and X-ray Optics IV; and EUV and X-ray Optics: Synergy between Laboratory and Space III (literal)

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Juan I. Larruquert, José A. Aznárez, Luis Rodríguez-de Marcos, José A. Méndez GOLD-Instituto de Óptica, Consejo Superior de Investigaciones Científicas (Spain) A. Marco Malvezzi Univ. degli Studi di Pavia (Italy) Angelo Giglia CNR, Istituto Officina dei Materiali (Italy) Paolo Miotti, Fabio Frassetto CNR, Istituto di Fotonica e Nanotecnologie (Italy) Giuseppe Massone, Giuseppe Crescenzio, Gerardo Capobianco, Silvano Fineschi INAF - Osservatorio Astronomico di Torino (Italy) Stefano Nannarone Univ. di Modena e Reggio Emilia (Italy) (literal)

Titolo

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Abstract

Polarimetry in the far ultraviolet (FUV) is a powerful tool for the interpretation of the role of the coronal plasma in the energy transfer processes from the inner parts of the Sun to the outer space. FUV polarimetry from space provides more accurate observations on the kinetics of the features and on local magnetic fields through the Doppler and Hanle resonant electron scattering effects. Particularly interesting lines for FUV polarimetry are H Lyman ? (121.6 nm) and ? (102.6 nm), along with OVI lines at 103.2 and 103.8 nm. One key element to perform polarimetry measurements at these wavelengths is the need of efficient polarizers. A limitation of the available polarizers, such as crystal plates of MgF2 and LiF working at Brewster angle, is their moderate reflectance at the non-extinguished component of the electric field, which results in a modest polarizer efficiency. (literal)

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