Results 21 to 30 of about 802,471 (226)
Atomic photoionization cross sections beyond the electric dipole approximation [PDF]
The Journal of Chemical Physics, 2019 A methodology is developed to compute photoionization cross sections beyond the electric dipole approximation from response theory, using Gaussian type orbitals and plane waves for the initial and final states, respectively. The methodology is applied to compute photoionization cross sections of atoms and ions from the first four rows of the periodic ...
Iulia Emilia Brumboiu +2 more
openaire +3 more sources
Effects of atomic electron momentum distribution on resonant dark sector production* [PDF]
EPJ Web of ConferencesExploring resonant positron annihilation on atomic electrons offers a promising method for detecting light dark sector particles that interact with e+e− pairs.
Arias-Aragón Fernando +3 more
doaj +1 more source
Calculation of Atomic Scattering Factor For X-ray in Copper
Tikrit Journal of Pure Science, 2023 In this paper the atomic scattering factor f( has been calculated for x-ray in copper using Wave function involves The independent particle approximation for the values , The physical importance of this factor appears in its relation with the several ...
Muhsin Hasan Ali
doaj +1 more source
Gamma-ray attenuation characteristics of polypropylene filled with nano-sized and bulk Bi2O3 and CuO [PDF]
Nuclear Technology and Radiation ProtectionPolypropylene was produced using compression molding and combined with bulk Bi2O3/CuO, and Bi2O3/CuO nanocomposites at various filler weight fractions (0%, 5%, 10%, 15%, and 20%).
Gouda Mona M. +5 more
doaj +1 more source
Quantitative atomic cross section analysis by 4D-STEM and EELS.
UltramicroscopyWe demonstrate the use of a 4-dimensional scanning transmission electron microscope (4D-STEM) to extract atomic cross section information in amorphous materials.
Shahar Seifer, Lothar Houben, M. Elbaum
semanticscholar +1 more source
مجلة بغداد للعلوم, 2012 The differential cross section for the Rhodium and Tantalum has been calculated by using the Cross Section Calculations (CSC) in range of energy(1keV-1MeV) . This calculations based on the programming of the Klein-Nashina and Rayleigh Equations.
Baghdad Science Journal
doaj +1 more source
Simulated Photoabsorption Spectra for Singly and Multiply Charged Ions
AtomsSimulated (or measured) photoabsorption spectra often provide the first indication of how matter interacts with light when irradiated by some radiation source. In addition to the direct, often slowly varying photoabsorption cross-section as a function of
Stephan Fritzsche +3 more
doaj +1 more source
Nuclear effects on tetraquark production by double parton scattering
EPJ Web of Conferences, 2017 In this work we study the nuclear effects in exotic meson production. We estimate the total cross section as a function of the energy for pPb scattering using a version of the color evaporation model (CEM) adapted to Double Parton Scattering (DPS).
Carvalho F., Navarra F. S.
doaj +1 more source
Electroweak corrections in a pseudo Nambu-Goldstone Dark Matter model revisited
Journal of High Energy Physics, 2020 Having so far only indirect evidence for the existence of Dark Matter a plethora of experiments aims at direct detection of Dark Matter through the scattering of Dark Matter particles off atomic nuclei.
Seraina Glaus +5 more
doaj +1 more source
Measurement of Photoionization Cross-Section for the Excited States of Atoms: A Review
Atoms, 2022 A review of experimental studies of the measurement of the photoionization cross-section for the excited states of the alkali atoms, alkaline earth atoms, and rare-gas atoms is presented, with emphasis on using multi-step laser excitation, ionization ...
Muhammad Aslam Baig
doaj +1 more source