Inquiry number

INS-0000000327

ABSTRACT

  BL22XU is one of four JAEA (Japan Atomic Energy Agency) beamlines constructed in SPring-8. The beamline equiped with an undulator is designed for X-ray diffraction measurement on substances including liquid state under high pressure and resonant X-ray diffraction measurement mainly on correlated electron systems. Recently, residual stress distribution measurement became available. The last half of the beamline is introduced into RI laboratory which has an experimental facility for handling radio active samples such as uranium compounds. 
  High energy X-ray is useful for high-pressure diffraction measurements with a multi-anvil press or a diamond anvil cell, while low energy X-ray is indispensible for resonant diffraction measurements for materials including some specific elements. The lower limit of available X-ray energy is determined in the light of the M-edge of uranium (∼ 3.5 keV) at which the magnetic scattering is significantly enhanced. In order to cover a wide energy range two sets of double crystal monochromator are installed in an optics hutch:each of them covers the energy region of 3-37 keV and 35-70 keV. In addition, movable beryllium windows are adopted to avoid the absorption of X-rays for a low energy region around 3 ∼ 4 keV.

AREA OF RESEARCH

• Materials science at high pressure
• Resonant X-ray scattering (activity at RI laboratory)
• Residual Stress Distribution Measurement 

KEYWORDS

• Scientific field
  High-pressure single-crystal X-ray diffraction, Powder X-ray diffraction, High temperature, X-ray absorption, Strongly correlated electron systems, Resonant X-ray diffraction, Stress, Strain 
• Equipment
  High-pressure and high-temperature apparatus, Diffractometer for extreme conditions (temperature, pressure, and magnetic field)

SOURCE AND OPTICS

  The light source is a SPring-8 standard type of in-vacuum undulator, and provides X-rays of 3 - 70 keV by using first up to fifth harmonic radiation. In the optics hutch, there are two sets of double-crystal monochromators designed for their peculiar use. One is a high-energy monochromator DXM1, which has two independent θ-axes and is used in an energy range from 35 keV to 70 keV. The other is a low-energy monochromator DXM2, which is a SPring-8 standard type monochromator and is used in an energy range from 3 keV to 37 keV. Si (111) crystals in the monochromators are cryogenically cooled with liquid nitrogen. As a focusing device, a set of beryllium refraction lenses is installed in the optics hutch. In addition, a first mirror and three second mirrors are installed in the experimental hutch 2 to focus incident X-rays and cut higher harmonics parts. The first mirror M1 is a mechanically-bent plane mirror for vertical focusing. The second mirrors M2, M3, and M4 are cylindrical mirrors for horizontal focusing, and are used in energy ranges 3 ∼ 7 keV, 7∼16 keV and 16∼30 keV, respectively.

• X-rays at sample

  Energy range	35 ∼ 70 keV by DXM1 3 ∼ 37 keV by DXM2
  Energy resolution	ΔE/E ∼ 10-4
  Photon flux	2 ×1013
  Beam size (at exp. hutch 3)	At 14.4 keV normal : 2.0 (V) × 3.2 (H) mm2 focusing : 0.5 (V) × 0.4 (H) mm2

Schematic view of beamline

EXPERIMENTAL STATIONS

• Cubic-type multi-anvil press
• DAC diffractometer
• Experimental hutch 3

PUBLICATION SEARCH

* Sorry, Some parts of results are displayed using Japanese characters.

CONTACT INFORMATION

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

Experimental station

Yoshinori KATAYAMA
Condensed Matter Science Division, Quantum Beam Science and Technology Directorate, JAEA
1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148
Phone : +81-(0)-791-58-2650
Fax : +81-(0)-791-58-0311
e-mail : katayama

Tetsu WATANUKI
Condensed Matter Science Division, Quantum Beam Science and Technology Directorate, JAEA
1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148
Phone : +81-(0)-791-58-2632
Fax : +81-(0)-791-58-0311
e-mail : wata

Toshiya Inami
Condensed Matter Science Division, Quantum Beam Science and Technology Directorate, JAEA
1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148
Phone : +81-(0)-791-58-2643
Fax : +81-(0)-791-58-0311
e-mail : inami

Kenji OHWADA
Condensed Matter Science Division, Quantum Beam Science and Technology Directorate, JAEA
1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148
Phone : +81-(0)-791-58-2639
Fax : +81-(0)-791-58-0311
e-mail : ohwada

Takahisa SHOBU
Materials Science Research Division, Quantum Beam Science and Technology Directorate, JAEA
1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148
Phone : +81-(0)-791-58-2615
Fax : +81-(0)-791-58-0311
e-mail : shobu

Beamline

Tetsu WATANUKI
Condensed Matter Science Division, Quantum Beam Science and Technology Directorate, JAEA
1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148
Phone : +81-(0)-791-58-2632
Fax : +81-(0)-791-58-0311
e-mail : wata

Takahisa SHOBU
Materials Science Research Division, Quantum Beam Science and Technology Directorate, JAEA
1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148
Phone : +81-(0)-791-58-2615
Fax : +81-(0)-791-58-0311
e-mail : shobu