Zobrazeno 1 - 10
of 178
pro vyhledávání: '"G. Rasigni"'
Publikováno v:
Physics Letters A. 263:65-69
Graph theory through the minimal spanning tree is used to study the so-called long-range percolation (LRP). The percolation thresholds are determined for the ten nearest-neighbour connections related to the eleven mosaics permitted in the plane. It i
Publikováno v:
Journal of Physics A: Mathematical and General. 32:2611-2622
Graph theory, through the minimal spanning tree (MST), is used to determine site percolation thresholds related to 2D regular lattices. It is shown that there is a direct relation between and a geometrical parameter characterizing the lattices. Moreo
Publikováno v:
Journal of X-Ray Science and Technology. 7:24-36
The influence of the number of bilayers on the optical performances of actual X-UV multilayer interferential mirrors (MIMs) has been studied in order to emphasize the experimental restrictions in the designing of “thick” mirrors used for the deve
Publikováno v:
Physics Letters A. 209:95-98
A quite new appoach based on the graph theory through the minimal spanning tree analysis is applied to the study of site percolation transitions in 2D regular lattices. The critical probability thresholds p c are computed for regular and semi-regular
Publikováno v:
Microscopy Microanalysis Microstructures. 5:189-202
Publikováno v:
Applied optics. 31(22)
The distribution of zero crossings for the profile of a statistically rough surface of a silver thin film is determined and compared with a Poisson distribution. It is shown that the density of zero crossings may be related to the autocorrelation len
Autor:
Herbert W. Schnopper, Jacqueline Palmari, Monique Rasigni, Finn Erland Christensen, G. Rasigni, Allan Hornstrup
Publikováno v:
Applied optics. 30(25)
It has been proposed to use the 220 reflection of LiF with a multilayer deposited upon the top for simultaneous spectroscopy near Fe-k and O-k and below the C-k absorption edge (284 eV) in x-ray astronomy. We demonstrate that a substantial reduction
Publikováno v:
Applied optics. 28(1)
Statistical parameters, rms roughness delta and autocovariance length sigma, are determined both for rough surfaces of CaF(2) deposits and for surfaces of silver films deposited on these CaF(2) underlayers. The dependence of delta and sigma on the Ca
Publikováno v:
Applied optics. 27(10)
Autor:
G. Rasigni, Yves Lepetre, René Philip, Michel Pirocchi, J.M. Esteva, R. Barchewitz, R. Rivoira, S. Bodeur
Publikováno v:
Applied optics. 25(20)
Recent sputtering techniques have been used to produce layered synthetic microstructures (LSMs) as dispersing devices for varied applications in x-ray optics and spectroscopy. These analyzers, specially suited for synchrotron radiation, have been mou