Zobrazeno 1 - 10
of 134
pro vyhledávání: '"Biraben, François"'
Autor:
The CREMA Collaboration, Schuhmann, Karsten, Fernandes, Luis M. P., Nez, François, Ahmed, Marwan Abdou, Amaro, Fernando D., Amaro, Pedro, Biraben, François, Chen, Tzu-Ling, Covita, Daniel S., Dax, Andreas J., Diepold, Marc, Franke, Beatrice, Galtier, Sandrine, Gouvea, Andrea L., Götzfried, Johannes, Graf, Thomas, Hänsch, Theodor W., Hildebrandt, Malte, Indelicato, Paul, Julien, Lucile, Kirch, Klaus, Knecht, Andreas, Kottmann, Franz, Krauth, Julian J., Liu, Yi-Wei, Machado, Jorge, Monteiro, Cristina M. B., Mulhauser, Françoise, Naar, Boris, Nebel, Tobias, Santos, Joaquim M. F. dos, Santos, José Paulo, Szabo, Csilla I., Taqqu, David, Veloso, João F. C. A., Voss, Andreas, Weichelt, Birgit, Antognini, Aldo, Pohl, Randolf
Hydrogen-like light muonic ions, in which one negative muon replaces all the electrons, are extremely sensitive probes of nuclear structure, because the large muon mass increases tremendously the wave function overlap with the nucleus. Using pulsed l
Externí odkaz:
http://arxiv.org/abs/2305.11679
Publikováno v:
The European Physical Journal D : Atomic, molecular, optical and plasma physics, 2023, 77 (2), pp.23
We study the 1S-3S two-photon transition of hydrogen in a thermal atomic beam, using a homemade cw laser source at 205 nm. The experimental method is described, leading in 2017 to the measurement of the 1S-3S transition frequency in hydrogen atom wit
Externí odkaz:
http://arxiv.org/abs/2302.07537
Autor:
Thomas, Simon, Fleurbaey, Hélène, Galtier, Sandrine, Julien, Lucile, Biraben, François, Nez, François
Publikováno v:
Annalen der Physik 2019, 1800363
High resolution spectroscopy of the hydrogen atom takes on particular importance in the new SI, as it allows to accurately determine fundamental constants, such as the Rydberg constant and the proton charge radius. Recently, the second most precisely
Externí odkaz:
http://arxiv.org/abs/1903.04252
The fine structure constant $\alpha$ and the ratio $h/m_{\mathrm{u}}$ between the Planck constant and the unified atomic mass are keystone constants for the determination of other fundamental physical constants, especially the ones involved in the fr
Externí odkaz:
http://arxiv.org/abs/1901.01990
Autor:
Fleurbaey, Hélène, Galtier, Sandrine, Thomas, Simon, Bonnaud, Marie, Julien, Lucile, Biraben, François, Nez, François, Abgrall, Michel, Guéna, Jocelyne
Publikováno v:
Phys. Rev. Lett. 120, 183001 (2018)
We present a new measurement of the $1S-3S$ two-photon transition frequency of hydrogen, realized with a continuous-wave excitation laser at 205 nm on a room-temperature atomic beam, with a relative uncertainty of $9\times10^{-13}$. The proton charge
Externí odkaz:
http://arxiv.org/abs/1801.08816
Publikováno v:
Phys. Rev. A 95, 052503 (2017)
We calculate the cross-damping frequency shift of a laser-induced two-photon transition monitored through decay fluorescence, by adapting the analogy with Raman scattering developed by Amaro et al. [P. Amaro et al., PRA 92, 022514 (2015)]. We apply t
Externí odkaz:
http://arxiv.org/abs/1704.09003
Autor:
Pohl, Randolf, Nez, François, Fernandes, Luis M. P., Ahmed, Marwan Abdou, Amaro, Fernando D., Amaro, Pedro, Biraben, François, Cardoso, João M. R., Covita, Daniel S., Dax, Andreas, Dhawan, Satish, Diepold, Marc, Franke, Beatrice, Galtier, Sandrine, Giesen, Adolf, Gouvea, Andrea L., Götzfried, Johannes, Graf, Thomas, Hänsch, Theodor W., Hildebrandt, Malte, Indelicato, Paul, Julien, Lucile, Kirch, Klaus, Knecht, Andreas, Knowles, Paul, Kottmann, Franz, Krauth, Julian J., Bigot, Eric-Olivier Le, Liu, Yi-Wei, Lopes, José A. M., Ludhova, Livia, Machado, Jorge, Monteiro, Cristina M. B., Mulhauser, Françoise, Nebel, Tobias, Rabinowitz, Paul, Santos, Joaquim M. F. dos, Santos, José Paulo, Schaller, Lukas A., Schuhmann, Karsten, Schwob, Catherine, Szabo, Csilla I., Taqqu, David, Veloso, João F. C. A., Voss, Andreas, Weichelt, Birgit, Antognini, Aldo
Laser spectroscopy of the Lamb shift (2S-2P energy difference) in light muonic atoms or ions, in which one negative muon $\mu^-$ is bound to a nucleus, has been performed. The measurements yield significantly improved values of the root-mean-square c
Externí odkaz:
http://arxiv.org/abs/1609.03440
Autor:
Pohl, Randolf, Nez, François, Udem, Thomas, Antognini, Aldo, Beyer, Axel, Fleurbaey, Hélène, Grinin, Alexey, Hänsch, Theodor W., Julien, Lucile, Kottmann, Franz, Krauth, Julian J., Maisenbacher, Lothar, Matveev, Arthur, Biraben, François
Publikováno v:
Metrologia 54, L1 (2017)
We give a pedagogical description of the method to extract the charge radii and Rydberg constant from laser spectroscopy in regular hydrogen (H) and deuterium (D) atoms, that is part of the CODATA least-squares adjustment (LSA) of the fundamental phy
Externí odkaz:
http://arxiv.org/abs/1607.03165
Autor:
Diepold, Marc, Fernandes, Luis M. P., Machado, Jorge, Amaro, Pedro, Abdou-Ahmed, Marwan, Amaro, Fernando D., Antognini, Aldo, Biraben, François, Chen, Tzu-Ling, Covita, Daniel S., Dax, Andreas J., Franke, Beatrice, Galtier, Sandrine, Gouvea, Andrea L., Götzfried, Johannes, Graf, Thomas, Hänsch, Theodor W., Hildebrandt, Malte, Indelicato, Paul, Julien, Lucile, Kirch, Klaus, Knecht, Andreas, Kottmann, Franz, Krauth, Julian J., Liu, Yi-Wei, Monteiro, Cristina M. B., Mulhauser, Françoise, Naar, Boris, Nebel, Tobias, Nez, François, Santos, José Paulo, Santos, Joaquim M. F. dos, Schuhmann, Karsten, Szabo, Csilla I., Taqqu, David, Veloso, João F. C. A., Voss, Andreas, Weichelt, Birgit, Pohl, Randolf
Publikováno v:
Rev. Sci. Inst. 86, 053102 (2015)
Avalanche photodiodes are commonly used as detectors for low energy x-rays. In this work we report on a fitting technique used to account for different detector responses resulting from photo absorption in the various APD layers. The use of this tech
Externí odkaz:
http://arxiv.org/abs/1505.06879
Autor:
Biraben, François
Publikováno v:
In Comptes rendus - Physique November-December 2019 20(7-8):671-681