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Andreas Gaupp
Researcher at Münster University of Applied Sciences
Publications - 64
Citations - 1259
Andreas Gaupp is an academic researcher from Münster University of Applied Sciences. The author has contributed to research in topics: Polarization (waves) & Synchrotron radiation. The author has an hindex of 20, co-authored 63 publications receiving 1215 citations. Previous affiliations of Andreas Gaupp include AREA Science Park.
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Journal ArticleDOI
Soft-x-ray polarimeter with multilayer optics: complete analysis of the polarization state of light.
Franz Schäfers,Hans Christoph Mertins,Andreas Gaupp,Wolfgang Gudat,Marcel Mertin,Ingo Packe,Frank Schmolla,Silvia Di Fonzo,G. Soullié,Werner Jark,Richard A. Walker,Xavier Le Cann,Ralf Nyholm,Mikael Eriksson +13 more
TL;DR: With these newly developed optical elements the complete polarization analysis of soft-x-ray synchrotron radiation can be extended to the water-window range from 300 to 600 eV.
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A novel undulator-based PGM beamline for circularly polarised synchrotron radiation at BESSY II
TL;DR: In this article, the design of a beamline for circularly polarised radiation from an elliptical double undulator to be built at BESSY II has been presented, which can achieve high energy resolution from 6000 to 13 000 at a flux between about 10 10 and 10 12 photon/s, respectively.
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Faraday rotation spectra at shallow core levels : 3p edges of Fe, Co, and Ni
Sergio Valencia,Andreas Gaupp,W. Gudat,H.-Ch. Mertins,Peter M. Oppeneer,D. Abramsohn,Claus M. Schneider +6 more
TL;DR: In this paper, the magneto-optical (MO) Faraday spectra measured at the 3(p) edges of Fe, Co, and Ni were used to determine the final state of the transmitted radiation.
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Elliptically polarizing insertion devices at BESSY II
TL;DR: In this paper, two APPLE II type twin undulators are installed at BESSY II and they can either be operated in a chicane mode providing variable polarization at high switching rates or in a combined mode using a modulator for phase adaption.
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Observation of the x-ray magneto-optical Voigt effect.
H.-Ch. Mertins,Peter M. Oppeneer,Jan Kuneš,Jan Kuneš,Andreas Gaupp,D. Abramsohn,Franz Schäfers +6 more
TL;DR: On the basis of ab initio calculations it is shown that the x-ray Voigt effect follows sensitively the amount of spin polarization of the 2p core states, which provides a unique measure of the spin of the core states.