Gutenberg Open Science: Progress in HAXPES performance combining full-field k-imaging with time-of-flight recording

Please use this identifier to cite or link to this item: http://doi.org/10.25358/openscience-7049

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DC Field	Value	Language
dc.contributor.author	Medjanik, Katerina	-
dc.contributor.author	Babenkov, Sergey	-
dc.contributor.author	Chernov, S.	-
dc.contributor.author	Vasilyev, Dmitry	-
dc.contributor.author	Schönhense, B.	-
dc.contributor.author	Schlueter, Christoph	-
dc.contributor.author	Gloskovskii, A.	-
dc.contributor.author	Matveyev, Yu.	-
dc.contributor.author	Drube, W.	-
dc.contributor.author	Elmers, Hans-Joachim	-
dc.contributor.author	Schönhense, Gerd	-
dc.date.accessioned	2022-05-30T10:20:54Z	-
dc.date.available	2022-05-30T10:20:54Z	-
dc.date.issued	2019	-
dc.identifier.uri	https://openscience.ub.uni-mainz.de/handle/20.500.12030/7063	-
dc.description.abstract	An alternative approach to hard-X-ray photoelectron spectroscopy (HAXPES) has been established. The instrumental key feature is an increase of the dimensionality of the recording scheme from 2D to 3D. A high-energy momentum microscope detects electrons with initial kinetic energies up to 8 keV with a k-resolution of 0.025 Å−1, equivalent to an angular resolution of 0.034°. A special objective lens with k-space acceptance up to 25 Å−1 allows for simultaneous full-field imaging of many Brillouin zones. Combined with time-of-flight (ToF) parallel energy recording this yields maximum parallelization. Thanks to the high brilliance (1013 hν s−1 in a spot of <20 µm diameter) of beamline P22 at PETRA III (Hamburg, Germany), the microscope set a benchmark in HAXPES recording speed, i.e. several million counts per second for core-level signals and one million for d-bands of transition metals. The concept of tomographic k-space mapping established using soft X-rays works equally well in the hard X-ray range. Sharp valence band k-patterns of Re, collected at an excitation energy of 6 keV, correspond to direct transitions to the 28th repeated Brillouin zone. Measured total energy resolutions (photon bandwidth plus ToF-resolution) are 62 meV and 180 meV FWHM at 5.977 keV for monochromator crystals Si(333) and Si(311) and 450 meV at 4.0 keV for Si(111). Hard X-ray photoelectron diffraction (hXPD) patterns with rich fine structure are recorded within minutes. The short photoelectron wavelength (10% of the interatomic distance) `amplifies' phase differences, making full-field hXPD a sensitive structural tool.	en_GB
dc.language.iso	eng	de
dc.rights	CC BY	*
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/	*
dc.subject.ddc	530 Physik	de_DE
dc.subject.ddc	530 Physics	en_GB
dc.title	Progress in HAXPES performance combining full-field k-imaging with time-of-flight recording	en_GB
dc.type	Zeitschriftenaufsatz	de
dc.identifier.doi	http://doi.org/10.25358/openscience-7049	-
jgu.type.dinitype	article	en_GB
jgu.type.version	Published version	de
jgu.type.resource	Text	de
jgu.organisation.department	FB 08 Physik, Mathematik u. Informatik	de
jgu.organisation.number	7940	-
jgu.organisation.name	Johannes Gutenberg-Universität Mainz	-
jgu.rights.accessrights	openAccess	-
jgu.journal.title	Journal of synchrotron radiation	de
jgu.journal.volume	26	de
jgu.journal.issue	6	de
jgu.pages.start	1996	de
jgu.pages.end	2012	de
jgu.publisher.year	2019	-
jgu.publisher.name	Wiley-Blackwell	de
jgu.publisher.place	Chester	de
jgu.publisher.issn	1600-5775	de
jgu.organisation.place	Mainz	-
jgu.subject.ddccode	530	de
jgu.publisher.doi	10.1107/S1600577519012773	de
jgu.organisation.ror	https://ror.org/023b0x485
Appears in collections:	JGU-Publikationen

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