9 documents found, page 1 of 1
Testing quantum electrodynamics in extreme fields using helium-like uranium
Loetzsch, R.; Beyer, H. F.; Duval, L.; Spillmann, U.; Banaś, D.; Dergham, P.; Kröger, F. M.; Glorius, J.; Grisenti, R. E.; Guerra, M.; Gumberidze, A.Funding Information: The results presented here are based on the experiment E125, which is performed at the infrastructure ESR at the GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, in the framework of FAIR Phase-0 and SPARC collaboration. This work is supported by the Horizon 2020 research and innovation programme of the European Union and grant agreement no. 6544002. We acknowledge the support provi...
Antifibrotics in rheumatoid arthritis-associated interstitial lung disease – re...
Duarte, Ana Catarina; Marques Gomes, C.; Correia, M.; Mendes, B.; Mazeda, C.; Guimarães, F.; Abelha-Aleixo, J.; Guerra, M.; Pereira da Costa, R.Publisher Copyright: © 2024 Sociedade Portuguesa de Reumatologia.; Introduction: Interstitial lung disease (ILD) is the most common pulmonary manifestation of rheumatoid arthritis (RA) and is associated with an increased mortality. Clinical trials have shown that antifibrotics (nintedanib and pirfenidone) can slow the progression of connective tissue disease-associated ILD. This study aims to evaluate the effec...
Diffusion of muonic hydrogen in hydrogen gas and the measurement of the 1s hype...
Nuber, J.; Adamczak, A.; Abdou Ahmed, M.; Affolter, L.; Amaro, F. D.; Amaro, P.; Antognini, A.; Carvalho, P.; Chang, Y. H.; Chen, T. L.; Chen, W. L.725039; and the Swiss National Science Foundation through the projects SNF 200021_165854 and SNF 200020_197052. Publisher Copyright: © 2022 Cosmos Publishing Cooperative. All rights reserved.; The CREMA collaboration is pursuing a measurement of the ground-state hyperfine splitting (HFS) in muonic hydrogen (µp) with 1 ppm accuracy by means of pulsed laser spectroscopy. In the proposed experiment, the µp atom is...
Laser excitation of the 1s-hyperfine transition in muonic hydrogen
Amaro, Pedro; Adamczak, A.; Ahmed, M. Abdou; Affolter, L.; Amaro, F. D.; Carvalho, Patricia; Chen, T. -L.; Fernandes, L. M. P.; Ferro, M.; Goeldi, D.725039, and the Swiss National Science Foundation through the projects SNF 200021_165854 and SNF 200020_197052.; The CREMA collaboration is pursuing a measurement of the ground-state hyperfine splitting (HFS) in muonic hydrogen (μp) with 1 ppm accuracy by means of pulsed laser spectroscopy to determine the two-photon-exchange contribution with 2×10-4 relative accuracy. In the proposed experiment, the μp atom un...
Precise x-ray energies of gadolinium determined by a combined experimental and ...
Ménesguen, Y.; Lépy, M. C.; Ito, Y.; Yamashita, M.; Fukushima, S.; Polasik, M.; Słabkowska, K.; Syrocki; Wȩder, E.; Indelicato, P.; Marques, J. P.This work was also supported by the National Science Centre , Poland under grant number 2017/25/B/ST2/00901.; We combined different experimental techniques with a theoretical approach to determine a consistent set of diagram lines energies and binding energies. We propose an original approach consisting in determining the mass attenuation coefficients in an energy range covering the L-, M- and N- absorption edg...
Portuguese recommendations for the prevention, diagnosis and management of prim...
Maria Rodrigues, Ana; Canhão, Helena; Marques, A.; Ambrosio, C.; Borges, J.; S. Coelho, Pedro; Costa, L.; Fernandes, S.; Goncalves, I; Goncalves, M. J.
Relativistic calculations of screening parameters and atomic radii of neutral a...
Guerra, M.; Amaro, P.; Santos, J. P.; Indelicato, P.Calculations of the effective nuclear charge for elements with 1≤Z≤118 have been performed in a Dirac–Fock approach including all relativistic effects as well as contributions from quantum electrodynamics. Maximum charge density for every subshell of every element in the periodic table was also computed in the same framework as well as atomic radii based on the total charge density. Results were compared with t...
Possibilities of low-power X-ray fluorescence spectrometry methods for rapid mu...
Gallardo, H.; Queralt, I.; Tapias, J.; Guerra, M.; Carvalho, M. L.; Marguí, E.Spanish National Research Programmes (Project ref. CGL2010-22168-C03-01 and Project ref. CGL2013-48802-C3-2-R). H. Gallardo gratefully acknowledges a research mobility grant from the Spanish Ministry (EEBB-I-107976) and Laboratorio de Instrumentacao, Engenharia Biomedica e Fisica da Radiacao, LIBPhys-UNL for laboratory facilities.; In the present contribution the possibilities and drawbacks of two analytical st...
K-shell width, fluorescence yield, and Kβ/Kα intensity ratio calculation for Fe...
Marques, J. P.; Guerra, M.; Parente, F.; Santos, J. P.; Indelicato, P.; Sampaio, J. M.K-shell fluorescence yield, width, and Kβ/Kα intensity ratio for Fe are calculated using the Dirac-Fock approach. Results are compared with available data.