Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Beerwerth, Randolf"'
Autor:
Koszorus, Agota, Vormawah, Liam, Beerwerth, Randolf, Bissell, Mark, Campbell, Paul, Cheal, Bradley, Devlin, Charlie, Eronen, Tommi, Fritzsche, Stephan, Geldhof, Sarina, Heylen, Hanne, Holt, Jason, Jokinen, Ari, Kelly, Sam, Moore, Iain, Miyagi, Takayuki, Rinta-Antila, Sami, Voss, Annika, Wraith, Calvin
Publikováno v:
Phys. Lett. B 819, 136439 (2021)
Collinear laser spectroscopy of the $N=Z=21$ self-conjugate nucleus $^{42}$Sc has been performed at the JYFL IGISOL IV facility in order to determine the change in nuclear mean-square charge radius between the $I^{\pi}=0^{+}$ ground state and the $I^
Externí odkaz:
http://arxiv.org/abs/2102.01988
Autor:
Schippers, Stefan, Beerwerth, Randolf, Bari, Sadia, Buhr, Ticia, Holste, Kristof, Kilcoyne, A. L. David, Perry-Sassmannshausen, Alexander, Phaneuf, Ronald A., Reinwardt, Simon, Savin, Daniel Wolf, Schubert, Kaja, Fritzsche, Stephan, Martins, Michael, Müller, Alfred
Publikováno v:
Astrophys. J. 908 (2021) 52
Using the photon-ion merged-beams technique at a synchrotron light source, we have measured relative cross sections for single and up to five-fold photoionization of Fe$^{2+}$ ions in the energy range 690--920 eV. This range contains thresholds and r
Externí odkaz:
http://arxiv.org/abs/2010.00473
Autor:
Beerwerth, Randolf, Buhr, Ticia, Perry-Saßmannshausen, Alexander, Stock, Sebastian O., Bari, Sadia, Holste, Kristof, Kilcoyne, A. L. David, Reinwardt, Simon, Ricz, Sandor, Savin, Daniel Wolf, Schubert, Kaja, Martins, Michael, Müller, Alfred, Fritzsche, Stephan, Schippers, Stefan
Relative cross sections for $m$-fold photoionization ($m=1,\ldots,5$) of Fe$^{3+}$ by single photon absorption were measured employing the photon-ion merged-beams setup PIPE at the PETRA III synchrotron light source operated at DESY in Hamburg, Germa
Externí odkaz:
http://arxiv.org/abs/1908.05252
Autor:
Bilal, Moazzam, Volotka, Andrey V, Beerwerth, Randolf, Rothhardt, Jan, Hilbert, Vinzenz, Fritzsche, Stephan
Publikováno v:
Physical Review A (2019)
Large-scale relativistic calculations are performed for the transition energy and line strength of the $ 1s^{2} 2s 2p$ $^1P_{1} \,-\ 1s^{2} 2s^{2}$ $^1S_{0} $ transition in Be-like carbon. Based on the multiconfiguration Dirac-Hartree-Fock~(MCDHF) ap
Externí odkaz:
http://arxiv.org/abs/1906.11165
Publikováno v:
Physical Review A, 2018
The magnetic dipole (M1) line strength between the fine-structure levels of the ground configurations in B-, F-, Al- and Cl-like ions are calculated for the four elements argon, iron, molybdenum and tungsten. Systematically enlarged multiconfiguratio
Externí odkaz:
http://arxiv.org/abs/1805.09052
Autor:
Müller, Robert A., Maiorova, Anna V., Fritzsche, Stephan, Volotka, Andrey V., Beerwerth, Randolf, Glowacki, Przemyslaw, Thielking, Johannes, Meier, David-Marcel, Okhapkin, Maksim, Peik, Ekkehard, Surzhykov, Andrey
Publikováno v:
Phys. Rev. A 98, 020503 (2018)
The thorium nucleus with mass number $A=229$ has attracted much interest because its extremely low lying first excited isomeric state at about $8$eV opens the possibility for the development of a nuclear clock. However, neither the exact energy of th
Externí odkaz:
http://arxiv.org/abs/1801.10470
Autor:
Schippers, Stefan, Martins, Michael, Beerwerth, Randolf, Bari, Sadia, Holste, Kristof, Schubert, Kaja, Viefhaus, Jens, Savin, Daniel Wolf, Fritzsche, Stephan, Müller, Alfred
Publikováno v:
Astrophys. J. 849, 5 (2017)
Absolute cross sections for m-fold photoionization (m=1,...,6) of Fe+ by a single photon were measured employing the photon-ion merged-beams setup PIPE at the PETRA III synchrotron light source, operated by DESY in Hamburg, Germany. Photon energies w
Externí odkaz:
http://arxiv.org/abs/1709.09092
Autor:
Obaid, Razib, Buth, Christian, Dakovski, Georgi L., Beerwerth, Randolf, Holmes, Michael, Aldrich, Jeff, Lin, Ming-Fu, Minitti, Michael, Osipov, Timur, Schlotter, William, Cederbaum, Lorenz S., Fritzsche, Stephan, Berrah, Nora
Publikováno v:
J. Phys. B 51, 034003 (2018) [6 pages]
We measured the fluorescence photon yield of neon upon soft x-ray ionization (~1200 eV) from the x-ray free electron laser at Linac Coherent Light Source, and demonstrated the usage of a grazing incidence spectrometer with a variable linespacing grat
Externí odkaz:
http://arxiv.org/abs/1708.01283
Autor:
Buth, Christian, Beerwerth, Randolf, Obaid, Razib, Berrah, Nora, Cederbaum, Lorenz S., Fritzsche, Stephan
Publikováno v:
J. Phys. B 51, 055602 (2018) [16 pages]
We theoretically examine neon atoms in ultrashort and intense x rays from free electron lasers and compare our results with data from experiments conducted at the Linac Coherent Light Source (LCLS). For this purpose, we treat in detail the electronic
Externí odkaz:
http://arxiv.org/abs/1705.07521
Autor:
Filippin, Livio, Beerwerth, Randolf, Ekman, Jörgen, Fritzsche, Stephan, Godefroid, Michel, Jönsson, Per
Publikováno v:
Phys. Rev. A 94, 062508 (2016)
The present work reports results from systematic multiconfiguration Dirac-Hartree-Fock calculations of electronic isotope shift factors for a set of transitions between low-lying states in neutral aluminium. These electronic quantities together with
Externí odkaz:
http://arxiv.org/abs/1610.09233