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BL17SU OUTLINE

Inquiry number

INS-0000000322

ABSTRACT

  BL17SU is designed to promote research on advanced materials by making use of a variety of spectroscopic methods facilitated by high brilliance soft X-ray undulator radiation. Electronic structures and chemical states of various kinds of materials are investigated by X-ray absorption spectroscopy (XAS), photoemission spectroscopy (PES), Auger electron spectroscopy (AES), X-ray emission spectroscopy (XES), soft X-ray diffraction (SXD), and so on. BL17SU is composed of two branched beamlines (branch A and B) in which the soft X-ray beams can be introduced exclusively by switching a beam path using a pre-mirror.
  Branch A has four experimental stations (Ac, A1, A2 and A3). A PES apparatus for gas-phase target and a versatile XAS apparatus combined with a gas cluster ion beam (GCIB) gun are installed in Ac station, a versatile PES apparatus in A1, a full-field imaging tool (spectroscopic photoemission and low-energy electron microscope (SPEEEM)) in A2, and a scanning soft X-ray microscope in A3 are installed. On the other hand, branch B is composed of stations B1, Bc and B2. An SXD apparatus is installed in B1 station, a versatile photoemission electron microscope (PEEM) in Bc, and an angle-resolved photoemission spectroscopy (ARPES) apparatus in B2.
  Currently, only the SPELEEM (branch A) and the versatile PEEM (branch B) apparatuses are open for public use and others are used exclusively by RIKEN staffs.

AREA OF RESEARCH

<Branch A>

  • Atomic and molecular science by XAS and PES/AES of gas-phase target --- Ac station
  • Electronic states (including their depth-dependence) investigation of solid state materials combined with a GCIB gun --- Ac station
  • Analysis of electronic states and band structures by PES --- A1 station
  • Structural and electronic-states analysis of microscopic regions by utilizing imaging/diffraction/dispersion modes --- A2 station
  • Spectromicroscopy of materials surfaces under the conditions of low-vacuum or He ambient pressure environment --- A3 station

<Branch B>

  • Electronic structure analysis of materials with long-period ordering --- B1 station
  • Electronic/magnetic states imaging and its time-resolved observations by PEEM --- Bc station
  • Visualization of electronic states and band structures of advanced materials by ARPES --- B2 station

SOURCE AND OPTICS

  • source

     The multi-polarization mode undulator, in which permanent magnets and electromagnets are incorporated, is used as an insertion device. Linearly (horizontal/vertical) as well as circularly (right/left) polarized light are available by switching operation modes of the insertion device.

  • optics

     As indicated in schematic drawings below (top view), soft X-ray beams are introduced exclusively to either branch A or B by inserting/retracting pre-focusing mirrors (M0a, M1a) installed in the optical hutch. Both the branches are equipped with each set of beamline monochromators which is composed of spherical mirrors (M21a~M23a、M21b&M22b) and varied line spacing plane grating monochromators (VLSPGMs, G1a&G2a、G1b&G2b). In addition, each pair of re-focusing mirrors is installed just before A1, A2, B1, Bc and B2 stations where the beams can be focused down to approximately 30 µm (H) × 10 µm (V) on the sample.

  • BL17SU_opt3s.jpg
  • X-rays at sample

    Energy range 0.25 ~ 2.0 keV
    Linear/circular polarization Degree of polarization changes depending on the operational condition as well as the energy region
    Photon flux > 1011 photon/s
    Beam size < 0.1 x 0.1 mm2
    Beam size E/ΔE < 104

PUBLICATION SEARCH

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BL17SU PUBLICATION SEARCH

CONTACT INFORMATION

Please note that each e-mail address is followed by "@spring8.or.jp."

Masaki OURA
SPring-8 / RIKEN
1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148
Phone : +81-(0)791-58-2933
Fax : +81-(0)791-58-2934
e-mail : oura

Takuo OHKOCHI
SPring-8 / JASRI
1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198
Phone : +81-(0)791-58-0833
Fax : +81-(0)791-58-0830
e-mail : o-taku

Last modified 2020-09-28 14:40
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