# Open Access

 2018-08-1611:29 [GSI-2018-00913] Journal Article et al Structure of $^{13}$Be studied in proton knockout from $^{14}$B Physical review / C 98(2), 024603 (2018) [10.1103/PhysRevC.98.024603] OpenAccess: PDF PDF (PDFA); 2018-08-0714:33 [GSI-2018-00885] Journal Article/Contribution to a conference proceedings et al Multi-electron processes in K-shell double and triple photodetachment of oxygen anions 30th International Conference on Photonic, Electronic and Atomic Collisions, ICPEAC XXX, CairnsCairns, Australia, 26 Jul 2017 - 1 Aug 2017 Absolute cross sections for double and triple photodetachment of O− ions have been measured at photon energies around the threshold for K-shell ionization using the photon-ion merged-beams technique at a synchrotron light-source. In addition, corresponding large-scale ab-initio calculations were carried out at a level of complexity that has never been invoked before. [...] OpenAccess: PDF PDF (PDFA); 2018-08-0714:28 [GSI-2018-00884] Journal Article/Contribution to a conference proceedings et al Accessing the hyperfine splitting in highly charged helium-like ions via angle-resolved x-ray spectroscopic analysis 30th International Conference on Photonic, Electronic and Atomic Collisions, ICPEAC XXX, CairnsCairns, Australia, 26 Jul 2017 - 1 Aug 2017 Journal of physics / Conference Series 875, 022043 - (2017) [10.1088/1742-6596/875/3/022043] A new scheme is presented for determining the hyperfine splitting of highly charged ions via angle-resolved spectroscopic analysis. In particular, we propose two measurements on the angular distribution and linear polarization of the emission line 1s2p 3 P 1, F = I − 1, I, I + 1 → 1s 2 1 S 0, Ff = I of He-like isotopic ions, following the stimulated decay of the 1s2s 1 S 0, Fi = I level. [...] OpenAccess: PDF PDF (PDFA); 2018-08-0714:24 [GSI-2018-00883] Journal Article/Contribution to a conference proceedings Fritzsche, S. Sideband and streaking regimes in two-color photoionization by twisted X-waves in strong infrared fields 30th International Conference on Photonic, Electronic and Atomic Collisions, (ICPEAC XXX, CairnsCairns, Australia, 26 Jul 2017 - 1 Aug 2017 Journal of physics / Conference Series 875, 022017 - (2017) [10.1088/1742-6596/875/3/022017] The photoionization by short twisted XUV pulses (X-waves) is investigated in the presence of an intense infrared beam within the S-matrix formalism. It is demonstrated how sidebands are affected by the twist of the ionizing pulse as the pulse duration increases.. OpenAccess: PDF PDF (PDFA); 2018-08-0714:19 [GSI-2018-00882] Journal Article/Contribution to a conference proceedings Fritzsche, S. Spin evolution of two valence electrons in two separated ions 30th International Conference on Photonic, Electronic and Atomic Collisions, ICPEAC XXX, CairnsCairns, Australia, 26 Jul 2017 - 1 Aug 2017 The spin evolution of two spin-1/2 valence electrons, located at two separated ions, is investigated with the help of Breit equation. This evolution that arise solely depends on their dipole-dipole magnetic interaction. [...] OpenAccess: PDF PDF (PDFA); 2018-08-0714:04 [GSI-2018-00881] Journal Article/Contribution to a conference proceedings Fritzsche, S. Shake-up processes in Auger Cascades of Light and Medium Elements 30th International Conference on Photonic, Electronic and Atomic Collisions, ICPEAC XXX, CairnsCairns, Australia, 26 Jul 2017 - 1 Aug 2017 Journal of physics / Conference Series 875, 062004 - (2017) [10.1088/1742-6596/875/7/062004] Many-electron computations are applied to model the de-excitation of inner-shell excited atoms by a cascade of Auger decays. In particular, the effects of shake-up transitions on Auger cascades of different elements are discussed together with various theoretical models that are needed to account for the underlying electron-electron correlations.. OpenAccess: PDF PDF (PDFA); 2018-08-0713:54 [GSI-2018-00879] Journal Article Fedotov, A. Unexpected impact of radiation friction: enhancing production of longitudinal plasma waves Scientific reports 8(1), 6478 (2018) [10.1038/s41598-018-24930-x] We study the penetration of ultra-intense (intensity I ≃ 1023–24 W/cm2) circularly polarized laser pulses into a thick subcritical plasma layer with accounting for radiation friction. We show that radiation pressure is enhanced due to radiation friction in the direction transverse to the laser pulse propagation, and that for stronger and longer laser pulses this mechanism dominates over the ordinary ponderomotive pressure, thus resulting in a substantionaly stronger charge separation than anticipated previously. [...] OpenAccess: PDF PDF (PDFA); 2018-08-0713:36 [GSI-2018-00875] Journal Article Martini, R. Curvature bound from gravitational catalysis Physical review / D D 97(8), 085017 (2018) [10.1103/PhysRevD.97.085017] OpenAccess: PDF PDF (PDFA); 2018-08-0712:35 [GSI-2018-00873] Journal Article et al Magneto-hydrodynamic simulations of Heavy Ion Collisions with ECHO-QGP FAIRNESS 2017, SitgesSitges, Spain, 28 May 2017 - 3 Jun 2017 OpenAccess: PDF PDF (PDFA); 2018-08-0712:30 [GSI-2018-00872] Journal Article et al Systematic errors in transport calculations of shear viscosity using the Green-Kubo formalism FAIRNESS 2017, SitgesSitges, Spain, 28 May 2017 - 3 Jun 2017 OpenAccess: PDF PDF (PDFA);