Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Sven Bernitt"'
Autor:
Renata Cumbee, Thomas Pfeifer, Jörn Wilms, P. Micke, C. Gräfe, Gregory V. Brown, Jakob Stierhof, Maurice A. Leutenegger, SungNam Park, Ralf Ballhausen, Natalie Hell, Moses Chung, F. S. Porter, S. Wipf, Chintan Shah, Sven Bernitt, G. L. Betancourt-Martinez, M. Bissinger, Vladimir A. Yerokhin, René Steinbrügge, Andrey Surzhykov, M. Lang, Steffen Kühn, J. Niskanen, M. Hirsch, Thomas Stöhlker, J. R. Crespo López-Urrutia, W. C. Stolte
Publikováno v:
Physical Review Letters. 125
We demonstrate a widely applicable technique to absolutely calibrate the energy scale of x-ray spectra with experimentally well-known and accurately calculable transitions of highly charged ions, allowing us to measure the K-shell Rydberg spectrum of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91fe2afb6d74719634a3d0c66d9f4224
https://doi.org/10.1103/physrevlett.125.243001
https://doi.org/10.1103/physrevlett.125.243001
Autor:
Gregory V. Brown, Jörn Seltmann, Moritz Hoesch, Chintan Shah, SungNam Park, Sven Bernitt, Thomas Pfeifer, Maurice A. Leutenegger, Pedro Amaro, Ralf Ballhausen, Keisuke Fujii, Thomas Stöhlker, F. Grilo, Moto Togawa, M. Chung, Natalie Hell, F. S. Porter, Steffen Kühn, Jörn Wilms, José Paulo Santos, Michael Rosner, Jakob Stierhof, René Steinbrügge, M. Bissinger, J. R. Crespo López-Urrutia
Publikováno v:
Physical review / A 102(5), 052831 (2020). doi:10.1103/PhysRevA.102.052831
We resonantly excite the $K$ series of O$^{5+}$ and O$^{6+}$ up to principal quantum number $n=11$ with monochromatic x rays, producing $K$-shell holes, and observe their relaxation by soft-x-ray emission. Some photoabsorption resonances of O$^{5+}$
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c6865676beab0f03190996e85d2897a
https://doi.org/10.1103/physreva.102.052831
https://doi.org/10.1103/physreva.102.052831
Autor:
Julian C. Berengut, Chintan Shah, Thomas Pfeifer, Sven Bernitt, Mikhail Kozlov, Maurice A. Leutenegger, René Steinbrügge, Jörn Wilms, Jakob Stierhof, Gregory V. Brown, Charles Cheung, Christoph H. Keitel, Moritz Hoesch, Thomas Stöhlker, Ralf Ballhausen, M. Bissinger, José R. Crespo López-Urrutia, Andrey Surzhykov, Keisuke Fujii, Moses Chung, Vladimir A. Yerokhin, Natalie Hell, Natalia S. Oreshkina, Michael Rosner, F. Scott Porter, Moto Togawa, Jörn Seltmann, Steffen Kühn, SungNam Park, Zoltán Harman, Marianna Safronova, Sergey G. Porsev
Publikováno v:
Physical Review Letters
Physical review letters 124(22), 225001 (2020). doi:10.1103/PhysRevLett.124.225001
Physical review letters 124(22), 225001 (1-7) (2020). doi:10.1103/PhysRevLett.124.225001
Physical review letters 124(22), 225001 (2020). doi:10.1103/PhysRevLett.124.225001
Physical review letters 124(22), 225001 (1-7) (2020). doi:10.1103/PhysRevLett.124.225001
Physical review letters 124(22), 225001 (1-7) (2020). doi:10.1103/PhysRevLett.124.225001
For more than 40 years, most astrophysical observations and laboratory studies of two key soft x-ray diagnostic $2p$−$3d$ transitions, $3C$ and $3D$, in F
For more than 40 years, most astrophysical observations and laboratory studies of two key soft x-ray diagnostic $2p$−$3d$ transitions, $3C$ and $3D$, in F
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d924b4d4aeb7d67fae148a537c917ba0
Autor:
Jérôme Palaudoux, Cédric Bomme, Alvaro Sanchez-Gonzalez, Rebecca Boll, M. A. Khalal, Clemens Weninger, Andrei Benediktovitch, Benjamin Erk, Nina Rohringer, René Steinbrügge, Francis Penent, J. R. Crespo López-Urrutia, Zhong Yin, Daniel Rolles, Sven Bernitt, Artem Rudenko, Stepan Dobrodey, Laurent Mercadier, H. Bekker, Pascal Lablanquie, Michael A. Blessenohl, Vinay P. Majety
Publikováno v:
Physical Review Letters
Physical Review Letters, American Physical Society, 2019, 123 (2), ⟨10.1103/PhysRevLett.123.023201⟩
Physical review letters 123(2), 023201 (2019). doi:10.1103/PhysRevLett.123.023201
Physical Review Letters, 2019, 123 (2), ⟨10.1103/PhysRevLett.123.023201⟩
Physical Review Letters, American Physical Society, 2019, 123 (2), ⟨10.1103/PhysRevLett.123.023201⟩
Physical review letters 123(2), 023201 (2019). doi:10.1103/PhysRevLett.123.023201
Physical Review Letters, 2019, 123 (2), ⟨10.1103/PhysRevLett.123.023201⟩
We present a comprehensive experimental and theoretical study on superfluorescence in the extreme ultraviolet wavelength regime. Focusing a free-electron laser pulse in a cell filled with Xe gas, the medium is quasi-instantaneously population inverte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d520c64c7534384c1aaf99b88c848ea9
https://hal.archives-ouvertes.fr/hal-02381351
https://hal.archives-ouvertes.fr/hal-02381351
Autor:
Sven Bernitt, René Steinbrügge, José R. Crespo López-Urrutia, Chintan Shah, Pedro Amaro, Stanislav Tashenov
Publikováno v:
The Astrophysical Journal Supplement Series
We present a systematic measurement of the X-ray emission asymmetries in the K-shell dielectronic, trielectronic, and quadruelectronic recombination of free electrons into highly charged ions. Iron ions in He-like through O-like charge states were pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aefbe3b37765390c63df5c7cdebf41b6
http://arxiv.org/abs/1801.01888
http://arxiv.org/abs/1801.01888
Autor:
Chintan Shah, Pedro Amaro, René Steinbrügge, Andrey Surzhyko, Stanislav Tashenov, Sven Bernitt, José R. Crespo López-Urrutia, Stephan Fritzsche
Publikováno v:
Journal of Physics: Conference Series
We report the first systematic measurement of x-ray angular distribution and polarization following dielectronic, trielectronic and quadroelectronic recombination into He-like through O-like iron and krypton ions. The experimental data revealed that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c60f0b19496082d7b676bdb6333daf0a
https://hdl.handle.net/21.11116/0000-0000-B45E-C
https://hdl.handle.net/21.11116/0000-0000-B45E-C
Autor:
Pedro Amaro, Chintan Shah, José R. Crespo López-Urrutia, Stanislav Tashenov, René Steinbrügge, Sven Bernitt, C. Beilmann
Publikováno v:
Physical Review A
We report a measurement of $KLL$ dielectronic recombination in charge states from Kr$^{+34}$ through Kr$^{+28}$, in order to investigate the contribution of Breit interaction for a wide range of resonant states. Highly charged Kr ions were produced i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98712cf951a182058e9d69767f458884
https://doi.org/10.1103/physreva.95.022712
https://doi.org/10.1103/physreva.95.022712
Autor:
Zhimin Hu, Sven Bernitt, Holger Jörg, Stepan Dobrodey, Pedro Amaro, José R. Crespo López-Urrutia, Chintan Shah, Andrey Surzhykov, René Steinbrügge, Stanislav Tashenov, Sebastian Weber, Stephan Fritzsche, C. Beilmann
Publikováno v:
Physical Review A. 94
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9b0bb12cd8800261c1c9b3368521d36
https://doi.org/10.1103/physreva.94.029905
https://doi.org/10.1103/physreva.94.029905
Autor:
C. Beilmann, Sven Bernitt, Chintan Shah, Stanislav Tashenov, Pedro Amaro, Andrey Surzhykov, José R. Crespo López-Urrutia, René Steinbrügge, Stephan Fritzsche
Publikováno v:
Physical Review E
We studied angular distributions of x rays emitted in resonant recombination of highly charged iron and krypton ions, resolving dielectronic, trielectronic, and quadruelectronic channels. A tunable electron beam drove these processes, inducing x rays
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d98ee0e7442a7c17af5c23a393edaf9f
https://hdl.handle.net/11858/00-001M-0000-002B-1FC8-611858/00-001M-0000-002B-1FCA-2
https://hdl.handle.net/11858/00-001M-0000-002B-1FC8-611858/00-001M-0000-002B-1FCA-2
Autor:
Sven Bernitt, Stepan Dobrodey, René Steinbrügge, Jelle Kaastra, José R. Crespo López-Urrutia, Chintan Shah, Liyi Gu
Publikováno v:
The Astrophysical Journal, 833(1), 52
The Astronomical Journal
The Astrophysical Journal
The Astronomical Journal
The Astrophysical Journal
The reported observations of an unidentified X-ray line feature at $\sim$3.5 keV have driven a lively discussion about its possible dark matter origin. Motivated by this, we have measured the \emph{K}-shell X-ray spectra of highly ionized bare sulfur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91cfc7bb6e63001fdec85a451e6d3dcd
http://hdl.handle.net/1887/47818
http://hdl.handle.net/1887/47818