Zobrazeno 1 - 10 of 28 pro vyhledávání: '"S. W. Wilkins"'
1
Contrast and resolution in imaging with a microfocus x-ray source
Autor: D. Gao, A. Pogany, S. W. Wilkins
Publikováno v: Review of Scientific Instruments. 68:2774-2782
A simple general treatment of x-ray image formation by Fresnel diffraction is presented; the image can alternatively be considered as an in-line hologram. Particular consideration is given to phase-contrast microscopy and imaging using hard x rays. T
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f0b7657c5e4ef65ac1c952b74514f740
https://doi.org/10.1063/1.1148194
Zobrazit plný text záznamu
2
On uncertainty in maximum-entropy maps and the generalization of 'classic MaxEnt'
Autor: Steen Hansen, S. W. Wilkins
Publikováno v: Acta Crystallographica Section A Foundations of Crystallography. 50:547-550
A Bayesian approach to the treatment of uncertainty in maximum-entropy maps is developed based on a deeper hypothesis space that includes the prior map. The new approach is able to take into account uncertainty in the knowledge of the prior and provi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ecd74d86f4fcb18398b423309d2085cd
https://doi.org/10.1107/s0108767394004459
Zobrazit plný text záznamu
3
A new approach for structure analysis of two-dimensional membrane protein crystals using X-ray powder diffraction data
Autor: R A, Dilanian, C, Darmanin, J N, Varghese, S W, Wilkins, T, Oka, N, Yagi, H M, Quiney, K A, Nugent
Publikováno v: Protein science : a publication of the Protein Society. 20(2)
The application of powder diffraction methods to problems in structural biology is generally regarded as intractable because of the large number of unresolved, overlapping X-ray reflections. Here, we use information about unit cell lattice parameters
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::ccd2e56e9bc5eefd99a6668a4f030d89
https://pubmed.ncbi.nlm.nih.gov/21154412
Zobrazit plný text záznamu
4
Large‐area HgTe–CdTe superlattices and Hg1−xCdxTe multilayers on GaAs and sapphire substrates grown by low‐temperature metalorganic chemical vapor deposition
Autor: Patrick W. Leech, S.R. Glanvill, S. W. Wilkins, C. J. Rossouw, N. Petkovic, J. Thompson, Martyn H. Kibel, M. S. Kwietniak, P. J. Gwynn, Andrew W. Stevenson, T. J. Elms, Geoff N. Pain, D. Gao, T. Warminski, L. S. Wielunski, C. Sandford, N. Bharatula
Publikováno v: Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 8:1067-1077
Specular HgTe–CdTe superlattice epilayers have been obtained on two 2‐in. diam GaAs or sapphire wafers per growth run using a horizontal metalorganic chemical vapor deposition (MOCVD) reactor in which the pyrolysis of the organometallics is induc
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bfa9b25676a4193f898a3d2e2b10915b
https://doi.org/10.1116/1.576963
Zobrazit plný text záznamu
5
Quantitative X-ray projection microscopy: phase-contrast and multi-spectral imaging
Autor: S C, Mayo, P R, Miller, S W, Wilkins, T J, Davis, D, Gao, T E, Gureyev, D, Paganin, D J, Parry, A, Pogany, A W, Stevenson
Publikováno v: Journal of microscopy. 207(Pt 2)
We outline a new approach to X-ray projection microscopy in a scanning electron microscope (SEM), which exploits phase contrast to boost the quality and information content of images. These developments have been made possible by the combination of a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::6bd39ea2d11f434e88275201949e5623
https://pubmed.ncbi.nlm.nih.gov/12180954
Zobrazit plný text záznamu
7
X-ray focusing using capillary arrays
Autor: H. N. Chapman, K. A. Nugent, S. W. Wilkins
Publikováno v: Optical Society of America Annual Meeting.
In this paper, a new class of x-ray focusing devices based on reflections from the interior surfaces of an array of capillaries is presented. The capillaries may have a range of cross sections, although square capillaries are predicted to offer the b
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f16dab28b0fea30d5aabd9389f5aec49
https://doi.org/10.1364/oam.1991.wl2
Zobrazit plný text záznamu
8
Dynamical X-ray diffraction from imperfect crystals in the Bragg case—extinction and the asymmetric limits
Autor: S. W. Wilkins
Publikováno v: Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences. 299:275-317
The variation of X-ray Bragg-reflexion properties of uniformly bent and mosaic-imperfect crystals is systematically explored within the framework of the TakagiTaupin equations by using spherical-wave boundary conditions. For simplicity, consideration
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::09c6daebafd22bbfcc533e32aa699203
https://doi.org/10.1098/rsta.1981.0024
Zobrazit plný text záznamu
9
Anharmonic Debye-Waller factors using quantum statistics
Autor: S. W. Wilkins, S L Mair
Publikováno v: Journal of Physics C: Solid State Physics. 9:1145-1158
Anharmonic Debye-Waller factors and thermal smearing functions are derived for all temperatures in the one-particle-potential (OPP) model of vibrations by applying a perturbed density-matrix expansion about the harmonic case. Where possible, general
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c29cbc4eb9486a8d252ef79ed2682afd
https://doi.org/10.1088/0022-3719/9/7/006
Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání

Omezení vyhledávání
Plný text Recenzováno Digitální knihovna AV ČR
Zdroje