39 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Universidade Nova de LisboaPT16 papers
- Centre National de la Recherche ScientifiqueFR10 papers
- Laboratoire Kastler BrosselFR8 papers
- Sorbonne UniversitéFR6 papers
- Collège de FranceFR5 papers
- Institute of Science and Technology AustriaAT5 papers
- École Normale Supérieure - PSLFR4 papers
- ETH ZurichCH4 papers
- GSI Helmholtz Centre for Heavy Ion ResearchDE4 papers
- Max Planck Institute of Quantum OpticsDE4 papers
- Paul Scherrer InstituteCH4 papers
- Université Paris Sciences et LettresFR4 papers
16 papers
X-ray spectra of the Fe-L complex III: systematic uncertainties in the atomic data
Liyi Gu, Chintan Shah, Junjie Mao +14
There has been a growing request from the X-ray astronomy community for a quantitative estimate of systematic uncertainties originating from the atomic data used in plasma codes. T…
Experimental and theoretical approaches for determining the K-shell fluorescence yield of carbon
Philipp Hönicke, Rainer Unterumsberger, Mauro Guerra +8
The knowledge of atomic fundamental parameters, such as the fluorescence yields with low uncertainties, is of decisive importance in elemental quantification involving X-ray fluore…
Influence of atomic modeling on electron capture and shaking processes
A. Andoche, L. Mouawad, P. -A. Hervieux +3
Ongoing experimental efforts to measure with unprecedented precision electron-capture probabilities challenges the current theoretical models. The short range of the weak interacti…
Observation of strong two-electron--one-photon transitions in few-electron ion
Moto Togawa, Steffen Kühn, Chintan Shah +22
We resonantly excite the series of O and O up to principal quantum number with monochromatic x rays, producing -shell holes, and observe their relaxatio…
Relativistic electron impact ionization cross sections of carbon ions and application to an optically thin plasma
Miguel A. de Avillez, Mauro Guerra, José Paulo Santos +4
Aims. Determination of K- and L-shell cross sections of the carbon atom and ions using the modified relativistic binary encounter Bethe (MRBEB) method, a simple analytical scheme b…
Revisiting the Fe XVII line emission problem: laboratory measurements of the 3s-2p and 3d-2p line-formation channels
Chintan Shah, José R. Crespo López-Urrutia, Ming Feng Gu +5
We determined relative X-ray photon emission cross sections in Fe XVII ions that were mono-energetically excited in an electron beam ion trap. Line formation for the 3s (3s-2p) and…
The next generation of laser spectroscopy experiments using light muonic atoms
S. Schmidt, M. Willig, J. Haack +41
Precision spectroscopy of light muonic atoms provides unique information about the atomic and nuclear structure of these systems and thus represents a way to access fundamental int…
Strong neutron pairing in core+4n nuclei
A. Revel, F. M. Marques, O. Sorlin +100
The emission of neutron pairs from the neutron-rich isotones C and O has been studied by high-energy nucleon knockout from N and O secondary…
Quantum interference in laser spectroscopy of highly charged lithiumlike ions
Pedro Amaro, Ulisses Loureiro, Laleh Safari +4
We investigate the quantum interference induced shifts between energetically close states in highly charged ions, with the energy structure being observed by laser spectroscopy. In…
High-precision measurements of transition energies and level widths in He- and Be-like Argon Ions
J. Machado, C. I. Szabo, J. P. Santos +7
We performed a reference-free measurement of the transition energies of the line in He-like argon, and of the $1s 2s^2 2p\,^1P\_1\to 1s^2 2s^2\,^1S…
Two-photon processes based on quantum commutators
Filippo Fratini, Laleh Safari, Pedro Amaro +1
We developed a new method to calculate two-photon processes in quantum mechanics that replaces the infinite summation over the intermediate states by a perturbation expansion. This…
Cross Sections for proton induced high energy -ray emission (PIGE) in reaction F(p,)O at incident proton energies between 1.5 and 4 MeV
P. Cabanelas, J. Cruz, M. Fonseca +11
We have studied the high energy gamma-rays produced in the reaction F(p,)O for incident proton energies from 1.5 to 4.0 MeV over NaF/Ag and CaF/Ag thin target…
Quantum interference shifts in laser spectroscopy with elliptical polarization
Pedro Amaro, Filippo Fratini, Laleh Safari +4
We investigate the quantum interference shifts between energetically close states, where the state structure is observed by laser spectroscopy. We report a compact and analytical e…
Experiments towards resolving the proton charge radius puzzle
A. Antognini, K. Schuhmann, F. D. Amaro +34
We review the status of the proton charge radius puzzle. Emphasis is given to the various experiments initiated to resolve the conflict between the muonic hydrogen results and the…
Relativistic evaluation of the two-photon decay of the metastable ${1s}^{2} 2s 2p~^3\mbox{P}_0$ state in berylliumlike ions with an active-electron model
Pedro Amaro, Filippo Fratini, Laleh Safari +4
The two-photon ${1s}^{2} 2s 2p~^3\mbox{P}_0 \rightarrow {1s}^{2} {2s}^2$ $^1\mbox{S}_0$ transition in berylliumlike ions is theoretically investigated within a full relativistic fr…
Quantum interference effects in laser spectroscopy of muonic hydrogen, deuterium, and helium-3
Pedro Amaro, Beatrice Franke, Julian J. Krauth +9
Quantum interference between energetically close states is theoretically investigated, with the state structure being observed via laser spectroscopy. In this work, we focus on hyp…