PMID- 31721745
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20191118
LR  - 20231019
IS  - 1600-5775 (Electronic)
IS  - 0909-0495 (Print)
IS  - 0909-0495 (Linking)
VI  - 26
IP  - Pt 6
DP  - 2019 Nov 1
TI  - Progress in HAXPES performance combining full-field k-imaging with time-of-flight 
      recording.
PG  - 1996-2012
LID - 10.1107/S1600577519012773 [doi]
AB  - 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 A(-1), equivalent to an angular resolution of 0.034 degrees . A 
      special objective lens with k-space acceptance up to 25 A(-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 (10(13) hnu s(-1) in a spot of 
      <20 microm 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.
CI  - open access.
FAU - Medjanik, K
AU  - Medjanik K
AD  - Institut fur Physik, Johannes Gutenberg Universitat Mainz, D-55099 Mainz, 
      Germany.
FAU - Babenkov, S V
AU  - Babenkov SV
AD  - Institut fur Physik, Johannes Gutenberg Universitat Mainz, D-55099 Mainz, 
      Germany.
FAU - Chernov, S
AU  - Chernov S
AD  - Institut fur Physik, Johannes Gutenberg Universitat Mainz, D-55099 Mainz, 
      Germany.
FAU - Vasilyev, D
AU  - Vasilyev D
AD  - Institut fur Physik, Johannes Gutenberg Universitat Mainz, D-55099 Mainz, 
      Germany.
FAU - Schonhense, B
AU  - Schonhense B
AD  - Department of Bioengineering, Imperial College London, UK.
FAU - Schlueter, C
AU  - Schlueter C
AD  - DESY Photon Science, Notkestrasse 85, 22607 Hamburg, Germany.
FAU - Gloskovskii, A
AU  - Gloskovskii A
AD  - DESY Photon Science, Notkestrasse 85, 22607 Hamburg, Germany.
FAU - Matveyev, Yu
AU  - Matveyev Y
AD  - DESY Photon Science, Notkestrasse 85, 22607 Hamburg, Germany.
FAU - Drube, W
AU  - Drube W
AD  - DESY Photon Science, Notkestrasse 85, 22607 Hamburg, Germany.
FAU - Elmers, H J
AU  - Elmers HJ
AD  - Institut fur Physik, Johannes Gutenberg Universitat Mainz, D-55099 Mainz, 
      Germany.
FAU - Schonhense, G
AU  - Schonhense G
AD  - Institut fur Physik, Johannes Gutenberg Universitat Mainz, D-55099 Mainz, 
      Germany.
LA  - eng
GR  - 05K16UM1/Bundesministerium fur Bildung und Forschung/
GR  - 05K16UMC/Bundesministerium fur Bildung und Forschung/
GR  - Transregio SFB TR173 Spin+X/Deutsche Forschungsgemeinschaft/
PT  - Journal Article
DEP - 20191101
PL  - United States
TA  - J Synchrotron Radiat
JT  - Journal of synchrotron radiation
JID - 9888878
SB  - IM
PMC - PMC6853377
OTO - NOTNLM
OT  - Brillouin zone
OT  - HAXPES
OT  - X-ray photoelectron diffraction
OT  - k-space
OT  - time-of-flight microscope
EDAT- 2019/11/14 06:00
MHDA- 2019/11/14 06:01
PMCR- 2019/11/01
CRDT- 2019/11/14 06:00
PHST- 2019/06/11 00:00 [received]
PHST- 2019/09/13 00:00 [accepted]
PHST- 2019/11/14 06:00 [entrez]
PHST- 2019/11/14 06:00 [pubmed]
PHST- 2019/11/14 06:01 [medline]
PHST- 2019/11/01 00:00 [pmc-release]
AID - S1600577519012773 [pii]
AID - il5041 [pii]
AID - 10.1107/S1600577519012773 [doi]
PST - ppublish
SO  - J Synchrotron Radiat. 2019 Nov 1;26(Pt 6):1996-2012. doi: 
      10.1107/S1600577519012773. Epub 2019 Nov 1.