DOI:10.1038/s41586-021-03183-1
Observation of Strong Two-Electron One-Photon Transitions in Few-Electron Ions,T. Togawa, S. Kühn, C. Shah, P. Amaro, R. Steinbrügge, J. Stierhof, N. Hell, M. Rosner, K. Fujii, M. Bissinger, R. Ballhausen, M. Hoesch, J. Seltmann, S. Park, F. Grilo, F. S. Porter, J. P. Santos, M. Chung, T. Stöhlker, J. Wilms, T. Pfeifer, G. V. Brown, M. A. Leutenegger, S. Bernitt, and J. R. Crespo López-Urrutia,
Phys. Rev. A 102, 052831 (2020)
DOI:10.1103/PhysRevA.102.052831
Structure of Kα1,2- and Kβ1,3-Emission X-ray Spectra for Se, Y, and Zr,Y. Ito, T. Tochio, M. Yamashita, S. Fukushima, A. M. Vlaicu, J. P. Marques, J. M. Sampaio, M. Guerra, J. P. Santos, Ł. Syrocki, K. Słabkowska, E. Węder, M. Polasik, J. Rzadkiewicz, P. Indelicato, Y. Ménesguen, M.-Ch. Lépy, and F. Parente,
Phys. Rev. A 102, 052820 (2020)
DOI:10.1103/PhysRevA.102.052820
Reference-Free Measurements of the 1s2s2p 2P°1/2,3/2 → 1s22s 2S1/2 and 1s2s2p 4P5/2 → 1s22s 2S1/2 Transition Energies and Widths in Lithiumlike Sulfur and Argon Ions,J. Machado, G.-J. Bian, N. Paul, M. Trassinelli, P. Amaro, M. Guerra, C. I. Szabo, A. Gumberidze, J. M. Isac, J. P. Santos, J. P. Desclaux, and P. Indelicato,
Phys. Rev. A 101, 062505 (2020)
DOI:10.1103/PhysRevA.101.062505
Structure of High-Resolution Kβ1,3 X-ray Emission Spectra for the Elements from Ca to Ge,Y. Ito, T. Tochio, M. Yamashita, S. Fukushima, A. M. Vlaicu, Ł. Syrocki, K. Słabkowska, E. Weder, M. Polasik, K. Sawicka, P. Indelicato, J. P. Marques, J. M. Sampaio, M. Guerra, J. P. Santos, and F. Parente,
Phys. Rev. A 97, 052505 (2018)
DOI:10.1103/PhysRevA.97.052505
High-Precision Measurements of n = 2 → n = 1 Transition Energies and Level Widths in He- and Be-like Argon Ions,J. Machado, C. I. Szabo, J. P. Santos, P. Amaro, M. Guerra, A. Gumberidze, G.-J. Bian, J. M. Isac, and P. Indelicato,
Phys. Rev. A 97, 032517 (2018)
DOI:10.1103/PhysRevA.97.032517
Quantum Interference in Laser Spectroscopy of Highly Charged Lithiumlike Ions,P. Amaro, U. Loureiro, L. Safari, F. Fratini, P. Indelicato, Th. Stöhlker, and J. P. Santos,
Phys. Rev. A 97, 022510 (2018)
DOI:10.1103/PhysRevA.97.022510
Radiative Transition Rates of 1s2s(3S)3p Levels for Li-like Ions with 5 ≤ Z ≤ 10,J. P. Santos, F. Parente, M. C. Martins, P. Indelicato, E. P. Benis, T. J. M. Zouros, and J. P. Marques,
Nucl. Instrum. Methods Phys. Res. B 408, 100–102 (2017)
DOI:10.1016/j.nimb.2017.04.015
Relativistic Calculations of Screening Parameters and Atomic Radii of Neutral Atoms,M. Guerra, P. Amaro, J. P. Santos, and P. Indelicato,
At. Data Nucl. Data Tables 117-118, 439–457 (2017)
DOI:10.1016/j.adt.2017.01.001
Experiments towards Resolving the Proton Charge Radius Puzzle,A. Antognini, K. Schuhmann, F. D. Amaro, P. Amaro, M. Abdou-Ahmed, F. Biraben, T.-L. Chen, D. S. Covita, A. J. Dax, M. Diepold, L. M. P. Fernandes, B. Franke, S. Galtier, A. L. Gouvea, J. Götzfried, T. Graf, T. W. Hänsch, M. Hildebrandt, P. Indelicato, L. Julien, K. Kirch, A. Knecht, F. Kottmann, J. J. Krauth, Y.-W. Liu, J. Machado, C. M. B. Monteiro, F. Mulhauser, F. Nez, J. P. Santos, J. M. F. dos Santos, C. I. Szabo, D. Taqqu, J. F. C. A. Veloso, A. Voss, B. Weichelt, and R. Pohl,
EPJ Web Conf. 113, 01006 (2016)
DOI:10.1051/epjconf/201611301006
Kα1,2 X-ray Linewidths, Asymmetry Indices, and [KM] Shake Probabilities in Elements Ca to Ge and Comparison with Theory for Ca, Ti, and Ge,Y. Ito, T. Tochio, H. Ohashi, M. Yamashita, S. Fukushima, M. Polasik, K. Słabkowska, Ł. Syrocki, E. Szymańska, J. Rzadkiewicz, P. Indelicato, J. P. Marques, M. C. Martins, J. P. Santos, and F. P. Parente,
Phys. Rev. A 94, 042506 (2016)
DOI:10.1103/PhysRevA.94.042506
Ground-State Landé g Factors for Selected Ions Along the Boron Isoelectronic Sequence,J. P. Marques, P. Indelicato, F. Parente, J. M. Sampaio, and J. P. Santos,
Phys. Rev. A 94, 042504 (2016)
DOI:10.1103/PhysRevA.94.042504
Relativistic Evaluation of the Two-Photon Decay of the Metastable 1s22s2p 3P0 State in Berylliumlike Ions with an Effective-Potential Model,P. Amaro, F. Fratini, L. Safari, J. Machado, M. Guerra, P. Indelicato, and J. P. Santos,
Phys. Rev. A 93, 032502 (2016)
DOI:10.1103/PhysRevA.93.032502
Quantum Interference Shifts in Laser Spectroscopy with Elliptical Polarization,P. Amaro, F. Fratini, L. Safari, A. Antognini, P. Indelicato, R. Pohl, and J. P. Santos,
Phys. Rev. A 92, 062506 (2015)
DOI:10.1103/PhysRevA.92.062506
Quantum Interference Effects in Laser Spectroscopy of Muonic Hydrogen, Deuterium, and Helium-3,P. Amaro, B. Franke, J. J. Krauth, M. Diepold, F. Fratini, L. Safari, J. Machado, A. Antognini, F. Kottmann, P. Indelicato, R. Pohl, and J. P. Santos,
Phys. Rev. A 92, 022514 (2015)
DOI:10.1103/PhysRevA.92.022514
A Vacuum Double-Crystal Spectrometer for Reference-Free X-ray Spectroscopy of Highly Charged Ions,P. Amaro, C. I. Szabo, S. Schlesser, A. Gumberidze, E. G. Kessler, Jr., A. Henins, E. O. Le Bigot, M. Trassinelli, J. M. Isac, P. Travers, M. Guerra, J. P. Santos, and P. Indelicato,
Radiat. Phys. Chem. 98, 132–149 (2014)
DOI:10.1016/j.radphyschem.2014.01.015
Approach towards the Critical Charge of Some Excited States of the Be Isoelectronic Series,J. Katriel, J. P. Marques, P. Indelicato, A. M. Costa, M. C. Martins, J. P. Santos, and F. Parente,
Phys. Rev. A 90, 052519 (2014)
DOI:10.1103/PhysRevA.90.052519
Theoretical Determination of K X-ray Transition Energy and Probability Values for Highly Charged Ions of Lanthanum and Cerium,J. P. Santos, M. C. Martins, A. M. Costa, J. P. Marques, P. Indelicato, and F. Parente,
Eur. Phys. J. D 68, 244 (2014)
DOI:10.1140/epjd/e2014-50300-7
Reference Free, High-Precision Measurements of Transition Energies in Few Electron Argon Ions,C. I. Szabo, P. Amaro, M. Guerra, S. Schlesser, A. Gumberidze, J. P. Santos, and P. Indelicato,
AIP Conf. Proc. 1525, 68–72 (2013)
DOI:10.1063/1.4802292
Electron Impact Ionization Cross Sections of Several Ionization Stages of Kr, Ar and Fe,M. Guerra, F. Parente, and J. P. Santos,
Int. J. Mass Spectrom. 348, 1–8 (2013)
DOI:10.1016/j.ijms.2013.02.011
Absolute Measurements and Simulations of X-ray Line Energies of Highly Charged Ions with a Double-Crystal Spectrometer,P. Amaro, S. Schlesser, M. Guerra, E. Le Bigot, J. P. Santos, C. I. Szabo, A. Gumberidze, and P. Indelicato,
Phys. Scr. T156, 014104 (2013)
DOI:10.1088/0031-8949/2013/T156/014104
Observation of 2p3d(1P°) → 1s3d(1De) Radiative Transition in He-like Si, S, and Cl Ions,S. Kasthurirangan, J. K. Saha, A. N. Agnihotri, S. Bhattacharyya, D. Misra, A. Kumar, P. K. Mukherjee, J. P. Santos, A. M. Costa, P. Indelicato, T. K. Mukherjee, and L. C. Tribedi,
Phys. Rev. Lett. 111, 243201 (2013)
DOI:10.1103/PhysRevLett.111.243201
Analysis of the Charge State Distribution in an ECRIS Ar Plasma Using High-Resolution X-ray Spectra,M. Guerra, P. Amaro, C. I. Szabo, A. Gumberidze, P. Indelicato, and J. P. Santos,
J. Phys. B 46, 065701 (2013)
DOI:10.1088/0953-4075/46/6/065701
Absolute Measurement of the Relativistic Magnetic Dipole Transition Energy in Heliumlike Argon,P. Amaro, S. Schlesser, M. Guerra, E.-O. Le Bigot, J.-M. Isac, P. Travers, J. P. Santos, C. I. Szabo, A. Gumberidze, and P. Indelicato,
Phys. Rev. Lett. 109, 043005 (2012)
DOI:10.1103/PhysRevLett.109.043005
Decay of the 1s22s3p 3P0 Level in Be-like Ions,J. P. Marques, F. Parente, A. M. Costa, M. C. Martins, P. Indelicato, and J. P. Santos,
Phys. Rev. A 86, 052521 (2012)
DOI:10.1103/PhysRevA.86.052521
Modeling Praseodymium K X-ray Lines in an Electron Beam Ion Trap,J. P. Santos, A. M. Costa, M. C. Martins, F. Parente, and P. Indelicato,
Eur. Phys. J. D 66, 202 (2012)
DOI:10.1140/epjd/e2012-30049-9
Production and Decay of Chlorine Ion Excited Species in an Electron Cyclotron Resonance Ion Source Plasma,J. P. Santos, M. C. Martins, A. M. Costa, J. P. Marques, P. Indelicato, and F. Parente,
Phys. Scr. T144, 014005 (2011)
DOI:10.1088/0031-8949/2011/T144/014005
X-ray-Spectroscopy Analysis of Electron-Cyclotron-Resonance Ion-Source Plasmas,J. P. Santos, A. M. Costa, J. P. Marques, M. C. Martins, P. Indelicato, and F. Parente,
Phys. Rev. A 82, 062516 (2010)
DOI:10.1103/PhysRevA.82.062516
Production and Decay of Sulfur Excited Species in an Electron-Cyclotron-Resonance Ion-Source Plasma,M. C. Martins, J. P. Marques, A. M. Costa, J. P. Santos, F. Parente, S. Schlesser, E.-O. Le Bigot, and P. Indelicato,
Phys. Rev. A 80, 032501 (2009)
DOI:10.1103/PhysRevA.80.032501
X-ray Spectra Emitted by Cl14+ Ions in ECRIS Plasmas,J. P. Santos, M. C. Martins, A. M. Costa, P. Indelicato, and F. Parente,
Vacuum 82, 1522–1524 (2008)
DOI:10.1016/j.vacuum.2008.03.044
QED and Relativistic Corrections in Superheavy Elements,P. Indelicato, J. P. Santos, S. Boucard, and J.-P. Desclaux,
Eur. Phys. J. D 45, 155–170 (2007)
DOI:10.1140/epjd/e2007-00229-y
Transition Wavelengths and Probabilities for Spectral Lines of Zr III,M. C. Martins, J. P. Santos, A. M. Costa, and F. Parente,
Eur. Phys. J. D 39, 167–172 (2006)
DOI:10.1140/epjd/e2006-00101-8
Relativistic Correlation Correction to the Binding Energies of the Ground Configuration of Beryllium-like, Neon-like, Magnesium-like and Argon-like Ions,J. P. Santos, G. C. Rodrigues, J. P. Marques, F. Parente, J. P. Desclaux, and P. Indelicato,
Eur. Phys. J. D 37, 201–207 (2006)
DOI:10.1140/epjd/e2006-00002-x
X-ray Energies of Circular Transitions in Sigmonic Atoms,J. P. Santos, F. Parente, S. Boucard, and P. Indelicato,
Nucl. Instrum. Methods Phys. Res. B 235, 206–209 (2005)
DOI:10.1016/j.nimb.2005.03.174
X-ray Energies of Circular Transitions and Electron Screening in Kaonic Atoms,J. P. Santos, F. Parente, S. Boucard, P. Indelicato, and J. P. Desclaux,
Phys. Rev. A 71, 032501 (2005)
DOI:10.1103/PhysRevA.71.032501
Systematic Calculation of Total Atomic Energies of Ground State Configurations,G. C. Rodrigues, P. Indelicato, J. P. Santos, P. Patté, and F. Parente,
At. Data Nucl. Data Tables 86, 117–233 (2004)
DOI:10.1016/j.adt.2003.11.005
Energy Levels of Hydrogenlike Kaonic Atoms,J. P. Santos, F. P. Parente, S. Boucard, and P. Indelicato,
Hyperfine Interact. 146-147, 325–329 (2003)
DOI:10.1023/B:HYPE.0000004232.42716.6f
Cross Sections for K-Shell Ionization of Atoms by Electron Impact,J. P. Santos, F. Parente, and Y.-K. Kim,
J. Phys. B 36, 4211–4224 (2003)
DOI:10.1088/0953-4075/36/21/002
Relativistic Calculations for Trapped Ions,P. Indelicato, E. Lindroth, T. Beier, J. Bieroń, A. M. Costa, I. Lindgren, J. P. Marques, A.-M. Mårtensson-Pendrill, M. C. Martins, M. A. Ourdane, F. Parente, P. Patté, G. C. Rodrigues, S. Salomonson, and J. P. Santos,
Hyperfine Interact. 132, 349–363 (2001)
DOI:10.1023/A:1011917316335
Dirac-Fock Transition Energies and Radiative and Radiationless Transition Probabilities for Ar9+ to Ar16+ Ion Levels with K-Shell Holes,A. M. Costa, M. C. Martins, F. Parente, J. P. Santos, and P. Indelicato,
At. Data Nucl. Data Tables 79, 223–239 (2001)
DOI:10.1006/adnd.2001.0869
Interpretation of X-ray Spectra Emitted by Ar Ions in an Electron-Cyclotron Resonance Ion Source,M. C. Martins, A. M. Costa, J. P. Santos, P. Indelicato, and F. Parente,
J. Phys. B 34, 533–543 (2001)
DOI:10.1088/0953-4075/34/4/303
Extension of the Binary-Encounter-Dipole Model to Relativistic Incident Electrons,Y.-K. Kim, J. P. Santos, and F. Parente,
Phys. Rev. A 62, 052710 (2000)
DOI:10.1103/PhysRevA.62.052710
Rydberg States of Atoms in Parallel Electric and Magnetic Fields,J. P. Santos, F. Mota-Furtado, M. F. Laranjeira, and F. Parente,
Phys. Rev. A 59, 1703–1706 (1999)
DOI:10.1103/PhysRevA.59.1703
Multiconfiguration Dirac-Fock Calculation of Transition Energies in Highly Ionized Bismuth, Thorium, and Uranium,J. P. Santos, J. P. Marques, F. Parente, E. Lindroth, S. Boucard, and P. Indelicato,
Eur. Phys. J. D 1, 149–163 (1998)
DOI:10.1007/s100530050075