Zobrazeno 1 - 10
of 156
pro vyhledávání: '"Atomic form factor"'
Research on Calculation Method of Molecular Interference Effect of Photon-atomic Coherent Scattering
Publikováno v:
Yuanzineng kexue jishu, Vol 58, Iss 3, Pp 573-580 (2024)
Coherent scattering is the theoretical basis of X-ray diffraction, which is widely used in the field of materials. A functional module to calculate the nondestructive testing of photon-atomic and photon-molecular coherent scattering cross sections is
Externí odkaz:
https://doaj.org/article/057d723e4650456f93bab470e7365811
Autor:
Mpshe, Kagiso
The emperical pseudopotential method in the large basis approach was used to calculate the electronic bandstructures of bulk semiconductor materials and layered semiconductor heterostructures. The crucial continuous atomic form factor potentials need
Externí odkaz:
http://hdl.handle.net/10500/20116
Autor:
Simon Grabowsky, Florian Kleemiss, Oleg V. Dolomanov, Luc J. Bourhis, Norbert Peyerimhoff, Laura Midgley, Horst Puschmann
Publikováno v:
Acta Crystallographica Section A Foundations and Advances, 2021, Vol.77(6), pp.519-533 [Peer Reviewed Journal]
When calculating derivatives of structure factors, there is one particular term (the derivatives of the atomic form factors) that will always be zero in the case of tabulated spherical atomic form factors. What happens if the form factors are non-sph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::11ba21c28f4dc2aa83342fdeee40aa96
Autor:
Amy A. Cordones, Xijie Wang, Kathryn Ledbetter, Mianzhen Mo, Martin Centurion, Thomas J. A. Wolf, Xiaozhe Shen, Siegfried Glenzer, Zhijiang Chen, Jie Yang, Elisa Biasin, J. Pedro F. Nunes, Christopher Crissman, Daniel P. DePonte, Ming-Fu Lin, Conor D. Rankine
Publikováno v:
Physical chemistry chemical physics : PCCP. 23(2)
Electron scattering on liquid samples has been enabled recently by the development of ultrathin liquid sheet technologies. The data treatment of liquid-phase electron scattering has been mostly reliant on methodologies developed for gas electron diff
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd80af6a6a04ae21f9d1196f02661b13
https://pubmed.ncbi.nlm.nih.gov/33367391
https://pubmed.ncbi.nlm.nih.gov/33367391
Autor:
Alexis J. Illig, Christopher T. Chantler, Martin J. Schalken, Martin D. de Jonge, Ruwini S. K. Ekanayake, Bernt Johannessen, Daniel Sier, Chanh Q. Tran, Peter Kappen
Publikováno v:
Journal of synchrotron radiation. 28(Pt 5)
High-accuracy X-ray mass attenuation coefficients were measured from the first X-ray Extended Range Technique (XERT)-like experiment at the Australian Synchrotron. Experimentally measured mass attenuation coefficients deviate by ∼50% from the theor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9f6106861b026875b7c5bee6efd18f9
https://pubmed.ncbi.nlm.nih.gov/34475296
https://pubmed.ncbi.nlm.nih.gov/34475296
Autor:
Ahmed Raheem Ahmed, Muhsin Hasan Ali
Publikováno v:
Tikrit Journal of Pure Science. 23:66-71
In the present study, we calculated the imaginary part of the x-ray scattering factor of nickel based on the principles of quantum mechanics to find a wave function that describes the electronic state of atoms by approximate methods, observed the stu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ef7de52559a3803acae4953b823804f
https://doi.org/10.25130/tjps.v23i10.565
https://doi.org/10.25130/tjps.v23i10.565
Autor:
V. P. Koshcheev, Yu. N. Shtanov
Publikováno v:
Technical Physics Letters. 44:566-569
A Fourier component of the potential energy of interaction between two atoms has been presented as a polynomial of the biquadratic atomic form factor. A numerical calculation has been performed in the screened Coulomb potential approximation. It is d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88790fa8c0edd88a66126a1e894a2eb7
https://doi.org/10.1134/s1063785018070088
https://doi.org/10.1134/s1063785018070088
Autor:
M.N. Martins, A. Mangiarotti
Publikováno v:
Radiation Physics and Chemistry. 141:312-338
More than 80 years have passed since the first calculations of electron–nucleus bremsstrahlung cross sections were published by Sommerfeld, for non-relativistic electrons, and, independently, by Sauter, Bethe and Heitler, and Racah, for relativisti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::870f422b8f0ff7edd0b5dab44a4ba35f
https://doi.org/10.1016/j.radphyschem.2017.05.026
https://doi.org/10.1016/j.radphyschem.2017.05.026
Autor:
Abhijit Sen, Z.K. Silagadze
We prove some trigonometric identities involving Chebyshev polynomials of second kind. The identities were inspired by atomic form factor calculations. Generalizations of these identities, if found, will help to increase the numerical stability of at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e7a385d1d02f6c4f126090a87cc4a8e7
Autor:
Takashi Kozaki, Satoru Ohuchi, Osami Sakata, Koji Ohara, Yukihiro Umetani, Satoshi Hiroi, Emiko Igaki
Publikováno v:
J Appl Crystallogr
Total scattering measurements enable understanding of the structural disorder in crystalline materials by Fourier transformation of the total structure factor, S(Q), where Q is the magnitude of the scattering vector. In this work, the direct calculat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e69faaaaddd477d2a15f1cb935e53248
https://pubmed.ncbi.nlm.nih.gov/32684882
https://pubmed.ncbi.nlm.nih.gov/32684882