Publications

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2023
Pessanha, Sofia, Alexandre Veiga, Delfim Doutel, Fernanda Silva, João Silva, Patrícia M. Carvalho, Sofia Barbosa, José Paulo Santos, Ana Félix, and Jorge Machado. "Evaluation of the influence of the formalin fixation time on the elemental content of tissues measured with X-ray fluorescence." Spectrochimica Acta Part B: Atomic Spectroscopy. 205 (2023): 106704. AbstractWebsite
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Machado, Jorge, Nancy Paul, Gabrielle Soum-Sidikov, Louis Duval, Stéphane Macé, Robert Loetzsch, Martino Trassinelli, and Paul Indelicato. "Absolute measurement of the relativistic magnetic dipole transition in He-like sulfur." Physical Review A. 107 (2023): 032821. AbstractWebsite
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Duval, Louis, Rοbert Loetzsch, Heinrich Beyer, Dariusz Banaś, Perla Dergham, Jan Glorius, Robert E. Grisenti, Mauro Guerra, Alexandre Gumberidze, Pierre-Michel Hillenbrand, Paweł Jagodziński, Emily Lamour, Yuri Litvinov, Jorge Machado, Gerhard Paulus, Nancy Paul, Nikolaos Petridis, Jose-Paulo Santos, Marius Scheidel, Ragandeep S. Sidhu, Uwe Spillmann, Sébastien Steydli, Karol Szary, Sergiy Trotsenko, Ingo Uschmann, Günther Weber, Thomas Stöhlker, Paul Indelicato, and Martino Trassinelli. "{X-ray spectroscopy of few-electron uranium ions for tests of QED}." Proceedings of FAIR next generation scientists - 7th Edition Workshop — PoS(FAIRness2022). Vol. 419. 2023. 012. Abstract
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2022
Boillos, J. M., D. Cortina-Gil, J. Benlliure, J. L. Rodr{\'ıguez-Sánchez, H. Alvarez-Pol, L. Atar, T. Aumann, V. V. Avdeichikov, S. Beceiro-Novo, D. Bemmerer, C. A. Bertulani, K. Boretzky, M. J. G. Borge, M. Caamano, C. Caesar, E. Casarejos, W. Catford, J. Cederkäll, M. Chartier, L. Chulkov, E. Cravo, R. N. P. Crespo, I. Dillmann, Diaz P. Fernandez, Z. Elekes, J. Enders, O. Ershova, A. Estrade, F. Farinon, L. M. Fraile, M. Freer, Galaviz D. Redondo, H. Geissel, R. Gernhäuser, P. Golubev, K. Göbel, J. Hagdahl, T. Heftrich, M. Heil, M. Heine, A. Heinz, A. Henriques, M. Holl, A. Hufnagel, A. Ignatov, H. T. Johansson, B. Jonson, J. Kahlbow, N. Kalantar-Nayestanaki, R. Kanungo, A. Kelic-Heil, A. Knyazev, T. Kröll, N. Kurz, M. Labiche, C. Langer, T. Le Bleis, R. Lemmon, S. Lindberg, J. F. D. C. Machado, J. Marganiec, A. Movsesyan, E. Nacher, M. A. Najafi, T. Nilsson, C. Nociforo, V. Panin, S. Paschalis, A. Perea, M. Petri, S. Pietri, R. Plag, R. Reifarth, G. Ribeiro, C. Rigollet, D. M. Rossi, M. Röder, D. Savran, H. Scheit, H. Simon, O. Sorlin, I. J. Syndikus, J. T. Taylor, O. Tengblad, R. Thies, Y. Togano, M. Vandebrouck, P. J. F. Velho, V. Volkov, A. Wagner, F. Wamers, H. Weick, C. Wheldon, G. L. Wilson, J. S. Winfield, P. Woods, D. Yakorev, M. Zhukov, A. Zilges, and K. Zuber. "{Isotopic cross sections of fragmentation residues produced by light projectiles on carbon near $400A$ MeV}." (2022): 1-13. Abstract

Phys. Rev. C 105, 014611 (2022). doi:10.1103/PhysRevC.105.014611

2021
Krauth, Julian J., Karsten Schuhmann, Marwan Abdou Ahmed, Fernando D. Amaro, Pedro Amaro, Fran{\c c}ois Biraben, Tzu-Ling Chen, Daniel S. Covita, Andreas J. Dax, Marc Diepold, Luis M. P. Fernandes, Beatrice Franke, Sandrine Galtier, Andrea L. Gouvea, Johannes Götzfried, Thomas Graf, Theodor W. Hänsch, Jens Hartmann, Malte Hildebrandt, Paul Indelicato, Lucile Julien, Klaus Kirch, Andreas Knecht, Yi-Wei Liu, Jorge Machado, Cristina M. B. Monteiro, Fran{\c c}oise Mulhauser, Boris Naar, Tobias Nebel, Fran{\c c}ois Nez, Joaquim M. F. dos Santos, José Paulo Santos, Csilla I. Szabo, David Taqqu, João F. C. A. Veloso, Jan Vogelsang, Andreas Voss, Birgit Weichelt, Randolf Pohl, Aldo Antognini, and Franz Kottmann. "{Measuring the $\alpha$-particle charge radius with muonic helium-4 ions}." Nature. 589 (2021): 527-531. AbstractWebsite

The energy levels of hydrogen-like atomic systems can be calculated with great precision. Starting from their quantum mechanical solution, they have been refined over the years to include the electron spin, the relativistic and quantum field effects, and tiny energy shifts related to the complex structure of the nucleus. These energy shifts caused by the nuclear structure are vastly magnified in hydrogen-like systems formed by a negative muon and a nucleus, so spectroscopy of these muonic ions can be used to investigate the nuclear structure with high precision. Here we present the measurement of two 2S–2P transitions in the muonic helium-4 ion that yields a precise determination of the root-mean-square charge radius of the $\alpha$ particle of 1.67824(83) femtometres. This determination from atomic spectroscopy is in excellent agreement with the value from electron scattering1, but a factor of 4.8 more precise, providing a benchmark for few-nucleon theories, lattice quantum chromodynamics and electron scattering. This agreement also constrains several beyond-standard-model theories proposed to explain the proton-radius puzzle2–5, in line with recent determinations of the proton charge radius6–9, and establishes spectroscopy of light muonic atoms and ions as a precise tool for studies of nuclear properties. The 2S–2P transitions in muonic helium-4 ions are measured using laser spectroscopy and used to obtain an $\alpha$-particle charge-radius value five times more precise than that from electron scattering.

Ensina, Ana, Patr{\'ıcia M. Carvalho, Jorge Machado, Maria Luisa Carvalho, Diogo Casal, Diogo Pais, José Paulo Santos, António A. Dias, and Sofia Pessanha. "{Analysis of human tissues using Energy Dispersive X Ray Fluorescence ? Dark matrix determination for the application to cancer research}." Journal of Trace Elements in Medicine and Biology. 68 (2021): 126837. AbstractWebsite

Journal of Trace Elements in Medicine and Biology, 68 (2021) 126837. doi:10.1016/j.jtemb.2021.126837

Boretzky, K., I. Gasparic, M. Heil, J. Mayer, A. Heinz, C. Caesar, D. Kresan, H. Simon, H. T. Törnqvist, D. Körper, G. Alkhazov, L. Atar, T. Aumann, D. Bemmerer, S. V. Bondarev, L. T. Bott, S. Chakraborty, M. I. Cherciu, L. V. Chulkov, M. Ciobanu, U. Datta, E. De Filippo, C. A. Douma, J. Dreyer, Z. Elekes, J. Enders, D. Galaviz, E. Geraci, B. Gnoffo, K. Göbel, V. L. Golovtsov, Gonzalez D. Diaz, N. Gruzinsky, T. Heftrich, H. Heggen, J. Hehner, T. Hensel, E. Hoemann, M. Holl, A. Horvat, Á. Horváth, G. Ickert, Jelavić D. Malenica, H. T. Johansson, B. Jonson, J. Kahlbow, N. Kalantar-Nayestanaki, A. Kelic-Heil, M. Kempe, K. Koch, N. G. Kozlenko, A. G. Krivshich, N. Kurz, V. Kuznetsov, C. Langer, Y. Leifels, I. Lihtar, B. Löher, J. Machado, N. S. Martorana, K. Miki, T. Nilsson, E. M. Orischin, E. V. Pagano, S. Pirrone, G. Politi, P. M. Potlog, A. Rahaman, R. Reifarth, C. Rigollet, M. Röder, D. M. Rossi, P. Russotto, D. Savran, H. Scheit, F. Schindler, D. Stach, E. Stan, Stomvall J. Gill, P. Teubig, M. Trimarchi, L. Uvarov, M. Volknandt, S. Volkov, A. Wagner, V. Wagner, S. Wranne, D. Yakorev, L. Zanetti, A. Zilges, K. Zuber, and R. 3B. collaboration. "{NeuLAND: The high-resolution neutron time-of-flight spectrometer for R3B at FAIR}." Nuclear Inst. and Methods in Physics Research, A. 1014 (2021): 165701. AbstractWebsite

Nuclear Inst. and Methods in Physics Research, A, 1014 (2021) 165701. doi:10.1016/j.nima.2021.165701

2020
Syndikus, I., M. Petri, A. O. Macchiavelli, S. Paschalis, C. A. Bertulani, T. Aumann, H. Alvarez-Pol, L. Atar, S. Beceiro-Novo, J. Benlliure, J. M. Boillos, K. Boretzky, M. J. G. Borge, B. A. Brown, M. Caamano, C. Caesar, E. Casarejos, W. Catford, J. Cederkäll, S. Chakraborty, L. V. Chulkov, D. Cortina-Gil, E. Cravo, R. Crespo, Datta U. Pramanik, I. Dillmann, Diaz P. Fernandez, Z. Elekes, J. Enders, F. Farinon, L. M. Fraile, D. Galaviz, H. Geissel, R. Gernhäuser, P. Golubev, K. Göbel, M. Heil, M. Heine, A. Heinz, A. Henriques, M. Holl, H. T. Johansson, B. Jonson, N. Kalantar-Nayestanaki, R. Kanungo, A. Kelic-Heil, T. Kröll, N. Kurz, C. Langer, T. Le Bleis, J. Machado, J. Marganiec-Gałązka, E. Nacher, T. Nilsson, C. Nociforo, V. Panin, A. Perea, S. B. Pietri, R. Plag, A. Rahaman, R. Reifarth, A. Revel, G. Ribeiro, C. Rigollet, D. M. Rossi, D. Savran, H. Scheit, H. Simon, O. Sorlin, O. Tengblad, Y. Togano, M. Vandebrouck, V. Volkov, F. Wamers, C. Wheldon, G. L. Wilson, J. S. Winfield, H. Weick, P. Woods, D. Yakorev, M. Zhukov, A. Zilges, K. Zuber, and R. 3B. collaboration. "{Probing the Z=6 spin-orbit shell gap with (p,2p) quasi-free scattering reactions}." Physics Letters B. 809 (2020): 135748. AbstractWebsite

Physics Letters B, 809 (2020) 135748. 10.1016/j.physletb.2020.135748

Machado, Jorge, Patr{\'ıcia Miguel Carvalho, Ana Félix, Delfin Doutel, José Paulo Santos, Maria Luisa Carvalho, and Sofia Pessanha. "{Accuracy improvement in XRF analysis for the quantification of elements ranging from tenths to thousands $μ$g g$^{-1}$ in human tissues using different matrix reference materials}." Journal of Analytical Atomic Spectrometry. 35 (2020): 2920-2927. AbstractWebsite

Journal of Analytical Atomic Spectrometry (2020), 35, 2920-2927, doi:10.1039/D0JA00307G

Machado, J., Guojie Bian, Nancy Paul, M. Trassinelli, P. Amaro, M. Guerra, C. I. Szabo, A. Gumberidze, J. M. Isac, J. P. Santos, J. P. Desclaux, and P. Indelicato. "{Reference-free measurements of the 1s2s2p2P1/2,3/2o$\rightarrow$1s22s2S1/2and 1s2s2p4P5/2$\rightarrow$1s22s2S1/2transition energies and widths in lithiumlike sulfur and argon ions}." Physical Review A. 101 (2020): 062505. AbstractWebsite
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2019
Holl, M., V. Panin, H. Alvarez-Pol, L. Atar, T. Aumann, S. Beceiro-Novo, J. Benlliure, C. A. Bertulani, J. M. Boillos, K. Boretzky, M. Caamano, C. Caesar, E. Casarejos, W. Catford, J. Cederkäll, L. Chulkov, D. Cortina-Gil, E. Cravo, I. Dillmann, Diaz P. Fernandez, Z. Elekes, J. Enders, L. M. Fraile, Galaviz D. Redondo, R. Gernhäuser, P. Golubev, T. Heftrich, M. Heil, M. Heine, A. Heinz, A. Henriques, H. T. Johansson, B. Jonson, N. Kalantar-Nayestanaki, R. Kanungo, A. Kelic-Heil, T. Kröll, N. Kurz, C. Langer, T. Le Bleis, S. Lindberg, J. Machado, E. Nacher, M. A. Najafi, T. Nilsson, C. Nociforo, S. Paschalis, M. Petri, R. Reifarth, G. Ribeiro, C. Rigollet, D. M. Rossi, D. Savran, H. Scheit, H. Simon, O. Sorlin, I. Syndikus, O. Tengblad, Y. Togano, M. Vandebrouck, P. Velho, F. Wamers, H. Weick, C. Wheldon, G. L. Wilson, J. S. Winfield, P. Woods, M. Zhukov, K. Zuber, and R. 3B. collaboration. "{Quasi-free neutron and proton knockout reactions from light nuclei in a wide neutron-to-proton asymmetry range}." Physics Letters B. 795 (2019): 682-688. AbstractWebsite

Physics Letters B, 795 (2019) 682–688. 10.1016/j.physletb.2019.06.069

2018
Atar, L., et al. "Quasifree ($p$, $2p$) Reactions on Oxygen Isotopes: Observation of Isospin Independence of the Reduced Single-Particle Strength." Phys. Rev. Lett.. 120 (2018): 052501. AbstractWebsite
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Monteiro, C. M. B., F. D. Amaro, M. S. Sousa, M. Abdou-Ahmed, P. Amaro, F. Biraben, T. 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. Liu, J. Machado, F. Mulhauser, B. Naar, T. Nebel, F. Nez, R. Pohl, J. P. Santos, J. M. F. dos Santos, K. Schuhmann, C. I. Szabo, D. Taqqu, J. F. C. A. Veloso, and A. Antognini. "{On the double peak structure of avalanche photodiode response to monoenergetic x-rays at various temperatures and bias voltages}." Journal of Instrumentation. 13 (2018): C01033. Abstract
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Revel, A., et al. "Strong Neutron Pairing in $\textrm{core}+4n$ Nuclei." Phys. Rev. Lett.. 120 (2018): 152504. AbstractWebsite
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Diaz Fernandez, P., et al. "{Quasifree ( p,pN) scattering of light neutron-rich nuclei near N=14}." Physical Review C. 97 (2018): 1459. Abstract
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2017
Vandebrouck, M., et al. "{Effective proton-neutron interaction near the drip line from unbound states in $^{25,26}$F}." Physical Review C. 96 (2017): 054305. AbstractWebsite
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Heine, M., et al. "{Determination of the neutron-capture rate of $^{17}$C for r-process nucleosynthesis}." Physical Review C. 95 (2017): 014613. AbstractWebsite
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Pohl, Randolf, Fran{\c c}ois Nez, Luis M. P. Fernandes, Marwan Abdou Ahmed, Fernando D. Amaro, Pedro Amaro, Fran{\c c}ois Biraben, João M. R. Cardoso, Daniel S. Covita, Andreas Dax, Satish Dhawan, Marc Diepold, Beatrice Franke, Sandrine Galtier, Adolf Giesen, Andrea L. Gouvea, Johannes Götzfried, Thomas Graf, Theodor W. Hänsch, Malte Hildebrandt, Paul Indelicato, Lucile Julien, Klaus Kirch, Andreas Knecht, Paul Knowles, Franz Kottmann, Julian J. Krauth, Eric-Olivier Le Bigot, Yi-Wei Liu, José A. M. Lopes, Livia Ludhova, Jorge Machado, Cristina M. B. Monteiro, Fran{\c c}oise Mulhauser, Tobias Nebel, Paul Rabinowitz, Joaquim M. F. dos Santos, José Paulo Santos, Lukas A. Schaller, Karsten Schuhmann, Catherine Schwob, Csilla I. Szabo, David Taqqu, João F. C. A. Veloso, Andreas Voss, Birgit Weichelt, and Aldo Antognini. "{Laser Spectroscopy of Muonic Atoms and Ions}." Proceedings of the 12th International Conference on Low Energy Antiproton Physics (LEAP2016). Journal of the Physical Society of Japan, 2017. Abstract
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2016
Thies, R., et al. "{Systematic investigation of projectile fragmentation using beams of unstable B and C isotopes}." Physical Review C. 93 (2016): 054601. AbstractWebsite
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Röder, Marko, et al. "{Coulomb dissociation of $^{20,21}$N}." Physical Review C. 93 (2016): 065807. AbstractWebsite
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Antognini, A., 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. "{Experiments towards resolving the proton charge radius puzzle}." Vol. 113. EPJ Web of Conferences, 2016. 01006. Abstract
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Reifarth, R., et al. "{Nuclear astrophysics with radioactive ions at FAIR}." Vol. 665. Journal of Physics: Conference Series, 2016. 012044. Abstract
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2015
Diepold, Marc, Luis M. P. Fernandes, Jorge Machado, Pedro Amaro, Marwan Abdou-Ahmed, Fernando D. Amaro, Aldo Antognini, Fran{\c c}ois Biraben, Tzu-Ling Chen, Daniel S. Covita, Andreas J. Dax, Beatrice Franke, Sandrine Galtier, Andrea L. Gouvea, Johannes Götzfried, Thomas Graf, Theodor W. Hänsch, Malte Hildebrandt, Paul Indelicato, Lucile Julien, Klaus Kirch, Andreas Knecht, Franz Kottmann, Julian J. Krauth, Yi-Wei Liu, Cristina M. B. Monteiro, Fran{\c c}oise Mulhauser, Boris Naar, Tobias Nebel, Fran{\c c}ois Nez, José Paulo Santos, Joaquim M. F. dos Santos, Karsten Schuhmann, Csilla I. Szabo, David Taqqu, João F. C. A. Veloso, Andreas Voss, Birgit Weichelt, and Randolf Pohl. "{Improved x-ray detection and particle identification with avalanche photodiodes}." Review of Scientific Instruments. 86 (2015): 053102. AbstractWebsite
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Amaro, Pedro, Beatrice Franke, Julian J. Krauth, Marc Diepold, Filippo Fratini, Laleh Safari, Jorge Machado, Aldo Antognini, Franz Kottmann, Paul Indelicato, Randolf Pohl, and José Paulo Santos. "{Quantum interference effects in laser spectroscopy of muonic hydrogen, deuterium, and helium-3}." Physical Review A. 92 (2015): 022514. AbstractWebsite
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2014
Altstadt, S. G., et al. "{$^{13,14}$B(n, $\gamma$) via Coulomb Dissociation for Nucleosynthesis towards the r-Process}." Nuclear Data Sheets. 120 (2014): 197-200. AbstractWebsite
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