New experimental perspectives for soft x-ray absorption spectroscopies at ultra-low temperatures below 50 mK and in high magnetic fields up to 7 T

Journal Article · Fri Apr 15 00:00:00 EDT 2016 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4947516· OSTI ID:22597146

Baev, I.; Gieschen, S.; Meyer, H.; Meyer, S.; Palutke, S.; Feulner, P. ^[1]; Uhlig, K. ^[2]

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1. Physik-Department E20, Technische Universität München, James-Franck-Straße 1, 85748 Garching (Germany)
2. Walther-Meißner-Institute, Walther-Meißner-Straße 8, 85748 Garching (Germany)

A new ultra-low temperature experiment including a superconducting vector magnet has been developed for soft x-ray absorption spectroscopy experiments at third generation synchrotron light sources. The sample is cooled below 50 mK by a cryogen free {sup 3}He-{sup 4}He dilution refrigerator. At the same time, magnetic fields of up to ±7 T in the horizontal direction and ±0.5 T in the vertical direction can be applied by a superconducting vector magnet. The setup allows to study ex situ and in situ prepared samples, offered by an attached UHV preparation chamber with load lock. The transfer of the prepared samples between the preparation section and the dilution refrigerator is carried out under cryogenic temperatures. First commissioning studies have been carried out at the Variable Polarization XUV Beamline P04 at PETRA III and the influence of the incident photon beam to the sample temperature has been studied.

• OSTI ID: 22597146
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 4 Vol. 87; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION
ABSORPTION SPECTROSCOPY
CRYOGENIC FLUIDS
DILUTION
EXTREME ULTRAVIOLET RADIATION
HELIUM 3
HELIUM 4
LIGHT SOURCES
MAGNETIC FIELDS
MAGNETS
PHOTON BEAMS
POLARIZATION
REFRIGERATORS
SOFT X RADIATION
SYNCHROTRONS
TEMPERATURE RANGE 0065-0273 K
VECTORS
X-RAY SPECTROSCOPY