Inquiry number

INS-0000000287

ABSTRACT

  BL27SU studies the various photochemical processes caused by soft X-ray excitation from both a fundamental and an applied viewpoint. The beamline consists of two branches. The B-branch provides higher energy soft X-ray beam by use of a Si(111) double crystal monochromator. On the other hand, equipped with a varied-line-spacing plane grating monochromator, the c-branch provides lower soft X-ray radiation in the range from 170 to 2300 eV. Four types of spectroscopic techniques, (photoabsorption spectroscopy, photoelectron spectroscopy, mass spectroscopy and soft X-ray fluorescence spectroscopy) are available for gaseous and solid samples.

AREA OF RESEARCH

• Soft X-ray photoabsorption spectroscopy
  Chemical state analysis of light elements in dilute samples
  Soft X-ray photoabsorption spectroscopy under the ambient atmospheric pressure condition
• Atomic and molecular spectroscopy
  High resolution atomic and molecular electron spectroscopy
  Dissociation dynamics of inner-shell excited molecules
• Photoemission and soft-x-ray emission spectroscopy for solids
  
  

KEYWORDS

• Scientific field
  Photochemistry, Atomic physics and molecular science, Surface science, Solid state physics, Materials evaluation, Growth of thin film,
• Equipment
  High-resolution soft X-ray monochromator, Micro-focus optics, High-resolution electron energy analyzer, Multi-coincidence apparatus, soft-x-ray emission spectrometer, Silicon-drift-detector

Light source

  The light source is a Figure-8 undulator which can produce linearly polarized radiation with low on-axis heat load. Figure-8 undulator provides both horizontally and vertically polarized soft X-ray beams by choice of an appropriate undulator gap, the linear electric vector lying horizontally (0°) from the integer-order-harmonic light and that vertically (90°) from the half-integer-order light.

Pre-mirrors

 The pre-mirrors that installed in an optics hutch deflect the photon beam to one of two branches. M0' at 2.2°diverts the photon beam into B-branch. M0 and M1 deflect and focus the photon beam to the C-branch.

• Parameter of pre-mirrors

  Branch	B	C
  Mirror	M0'	M0	M1
  Incident angle	88.9°	89.4°	89.4°
  Mirror Shape	Plane	Cylinder	Bent cylinder
  Focusing	---	Sagittal (vertical focus)	Tangential (horizontal focus)
  Material	Pt/Si	Au/Si	Au/Si

Schematic view of BL27SU

Photon flux curve of BL27SU

Experimental stations

• B-branch
  Soft X-ray photoabsorption
  Irradiation experiment apparatus　
• C-branch
  Soft X-ray photoabsorption
  Atomic and molecular science
  Photoemission and soft-x-ray emission spectroscopy for solids

PUBLICATION SEARCH

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CONTACT INFORMATION

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

Yusuke TAMENORI
SPring-8 / JASRI
1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198
Phone : +81-(0)791-58-0832
Fax : +81-(0)791-58-0830
e-mail : tamenori

Takyuki MURO
SPring-8 / JASRI
1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198
Phone : +81-(0)791-58-0832
Fax : +81-(0)791-58-0830
e-mail : muro