The cadmium L x-ray spectrum induced by electron impact was analyzed in detail. The measurements were performed on a bulk pure sample using a commercial wavelength dispersive spectrometer, and the spectrum was processed with a parameter optimization method previously developed. This procedure permitted the determination of characteristic energies, relative transition probabilities and natural linewidths for this element. The results obtained here were compared to the data found in the literature, when available. Spectral structures related to satellite and radiative Auger Effect emissions were also analyzed, assessing energy shifts and relative intensities. Some of these parameters were determined for the first time, even in overlapping peaks and weak transitions, which was possible due to the robustness of the spectral processing method used.
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http://dx.doi.org/10.1016/j.ultramic.2021.113401 | DOI Listing |
Sci Rep
November 2024
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China.
The L-shell x-ray emission of tellurium induced by H ions impact is investigated in an energy range of 150-300 keV. The blue shifts of various L-subshell x rays and the enhancement of the relative intensity ratios of Lι, Lβ to Lα x ray are observed and interpreted by the multiple ionization of outer-shell electrons. The new experimental x-ray production cross sections, which almost correspond to those of protons with half of the original energy, are extracted and compared with various theoretical estimations.
View Article and Find Full Text PDFPhys Rev Lett
November 2024
Institut für Kernphysik, Goethe-Universität Frankfurt, Max-von-Laue-Str. 1, 60438 Frankfurt am Main, Germany.
We report a fully differential study of ionization of the Ne L shell by Compton scattering of 20 keV photons. We find two physical mechanisms that modify the Compton-electron emission. Firstly, we observe scattering of the Compton electrons at their parent nucleus.
View Article and Find Full Text PDFSci Rep
November 2023
Department of Physics, University of South Africa, P Bag X90, Florida, 1710, South Africa.
Quantitative analysis of materials from Heavy Ion PIXE spectra remains impeded by the lack of reliable X-ray production cross section (XPCS) data. Although efforts at experimental Heavy Ion induced XPCS measurements still continue, Multiple Ionisation (MI) effects, which are not fully described by theory, render simulations of heavy ion PIXE data unreliable for large Z/Z collisions, especially at low energies. This is also exacerbated by the random selection of projectile-target combinations for measured and reported experimental data available to validate theory.
View Article and Find Full Text PDFSci Rep
November 2022
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China.
The L-shell x-ray emissions of gold are investigated for the bombardment of high energy C ions in the high energy region of 154.3-423.9 MeV/u.
View Article and Find Full Text PDFSensors (Basel)
October 2022
CREOL and Department of Physics, University of Central Florida, Orlando, FL 32816, USA.
Electron correlation describes the interaction between electrons in a multi-electron system. It plays an important role in determining the speed of relaxation of atoms and molecules excited by XUV/X-ray pulses, such as the argon decay rate. Most research on electron correlation has centered on the role of correlation in stationary states.
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