37 citations · 118 across the 7 of their papers we have counts for
7 papers
X-ray scattering of periodic and graded multilayers: comparison of experiments to simulations from surface microroughness characterization
B. Salmaso, D. Spiga, R. Canestrari +1
To enhance the reflectivity of X-ray mirrors beyond the critical angle, multilayer coatings are required. Interface imperfections in the multilayer growth process are known to caus…
X-ray beam-shaping via deformable mirrors: analytical computation of the required mirror profile
D. Spiga, L. Raimondi, C. Svetina +1
X-ray mirrors with high focusing performances are in use in both mirror modules for X-ray telescopes and in synchrotron and FEL (Free Electron Laser) beamlines. A degradation of th…
POLARIX: a pathfinder mission of X-ray polarimetry
Enrico Costa, Ronaldo Bellazzini, Gianpiero Tagliaferri +30
Since the birth of X-ray astronomy, spectral, spatial and timing observation improved dramatically, procuring a wealth of information on the majority of the classes of the celestia…
Optics for X-ray telescopes: analytical treatment of the off-axis effective area of mirrors in optical modules
Daniele Spiga
Optical modules for X-ray telescopes comprise several double-reflection mirrors operating in grazing incidence. The concentration power of an optical module, which determines prima…
Simbol-X Hard X-ray Focusing Mirrors: Results Obtained During the Phase A Study
G. Tagliaferri, S. Basso, G. Borghi +16
Simbol-X will push grazing incidence imaging up to 80 keV, providing a strong improvement both in sensitivity and angular resolution compared to all instruments that have operated…
Analytical evaluation of the X-ray scattering contribution to imaging degradation in grazing-incidence X-ray telescopes
Daniele Spiga
The focusing performance of X-ray optics (conveniently expressed in terms of HEW, Half Energy Width) strongly depend on both mirrors deformations and photon scattering caused by th…