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BL09XU OUTLINE

問い合わせ番号

INS-0000000302

ABSTRACT

  This beamline is a standard X-ray beamline with a 32 mm-period linear undulator and a liquid-nitrogen cooled monochromator. Intense X-rays up to 80 keV can be produced and more than 30 kinds of nuclear levels exist in this energy range mainly. The following researches of nuclear resonant scattering are performed using the high-resolution optics and the time differential measurements in the several-bunch operation; Study of dynamics in materials using nuclear inelastic scattering; Time domain Mössbauer spectroscopy; Coherent X-ray optics using nuclear resonant scattering (NRS).
  The following researches are also performed using the multi high-precision goniometer system; NEET, surface study; X-ray non-linear phenomena and; Residual strain analysis.

AREA OF RESEARCH

  • Materials science using nuclear resonant scattering
    Electronic property studied by Mössbauer spectroscopy using synchrotron radiation
    Lattice dynamics studied by using nuclear inelastic scattering
  • Nuclear physics and X-ray optics using nuclear resonant scattering
    Nuclear excitation by electron transition (NEET)
    Coherent X-ray optics using nuclear resonant scattering
  • Materials science using hard x-ray photoemission spectroscopy
    Variable depth analysis of electronic properties with high energy resolution
    X-ray polarization tunability with phase retarder and analysis for observing magnetic effects
    Various applications both in basic and applied research fields under low temperatures

KEYWORDS

  • Scientific field
    Mössbauer spectroscopy, Nuclear resonance vibrational spectroscopy, Phonon density of states, NEET, Hard X-ray Photoelectron Spectroscopy
  • Equipment
    High-resolution monochromator, High precision optics, Avalanche photodiode, Fast timing electronics, Hard X-ray Photoelectron Spectroscopy system, KB focusing mirrors, X-ray phase plate

SOURCE AND OPTICS

  • Schematic view of beamline
  • X-rays at Sample

    Energy range 5.0 ∼ 100 keV
    Total flux 5 × 1013 phs/sec
    (E = 14.4 keV @ 100 mA)
    Beam size (2σ) 1.1 mm (h) × 0.6 mm (v)
    Divergence (2σ) 0.04 mrad (h) × 0.02 mrad (v)

EXPERIMENTAL STATIONS

 We have two experimental hutches. High-resolution monochromators used for the research using nuclear resonant scattering are arranged on these high precision goniometers In the Experimental Hutch 1. Three kinds of high-resolution monochromators for 14.4 keV X-rays with different energy resolutions and that for 6.2, 21.5, 22.5 and 29.8 keV X-rays are available at BL09XU. Their specifications and the measured performance are listed in Table 1, respectively. Samples are set with temperature control in Experimental Hutch 2. A nuclear resonant inelastic scattering spectrum measured by iron foil is shown in Fig.2. In HAXPES experiments, HAXPES equipment and X-ray phase plate are installed in Experimental Hutch 2.High-energy-resolution channel-cut crystals (Si333, Si311) and KB focusing mirrors are available in HAXPES experiments.

  • Table 1. High-resolution monochromators available at BL09XU
    Isotope Energy (keV) Reflections Resolution(meV)
    181Ta 6.21 Si311-Si511-Si511 10.5
    57Fe 14.41 Ge333-Si975-Si975 0.8
    14.41 Si511-Si975(nested) 2.5
    14.41 Si511-Si975(nested) 3.5
    151Eu 21.54 Si422-Si12 12 8(nested) 1.7
    149Sm 22.51 Si422-Si16 8 8(nested) 1.6
    119Sn 23.87 Si440-Si12 12 12(nested) 1.6
    40K 29.83 Si660-Si22 14 0 2.6
    125Te 35.49 αAl2O3 9 1 -10 68 1.7
    121Sb 37.13 Si444-Si12 12 8 1.7
    61Ni 67.41 Si866-Si866 60

Fig.1. Schematic side view of high precision goniometers

  • Instruments for nuclear resonant scattering
    • Nuclear inelastic scattering spectrometer
    • Time-domain Mössbauer spectrometer
    • Energy-domain Mössbauer spectrometer
    • Cryostat (5K – 300K)
    • Furnace (R.T. – 900°C)
    • Vacuum pump (Scroll pump and TMP)
    • Velocity Transducer, Laser calibrator
    • Spot size: ~Φ10 µm at 14.4 keV
  • Hard X-ray photoelectron spectrometer: High-energy-resolution photoelectron spectroscopy by hard X-ray excitation: Depth analysis of in-solid and interface electron states
    • X-ray energy for excitation: Tunable energy range: 5 keV~10 keV
    • Spot size: ~Φ10 µm
    • Diamond circular polarization element: X-ray phase retarder (only operable at 8 keV)
      [Users who wish to use the tunable energy range should contact the Beamline Scientist (Yasui) before applying for beamtime.]
    • Cryostat (10K – 400K)

Fig.2. Measured nuclear resonant inelastic scattering spectrum of the α-iron foil

PUBLICATION SEARCH

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

BL09XU PUBLICATION SEARCH

 

CONTACT INFORMATION

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

<Nuclear resonant scattering experiments>
Yoshitaka YODA
SPring-8 / JASRI
1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198
Phone : +81-(0)791-58-2750
Fax : +81-(0)791-58-0830
e-mail : yoda

Stoshi TSUTSUI
SPring-8 / JASRI
1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198
Phone : +81-(0)791-58-2750
Fax : +81-(0)791-58-0830
e-mail : satoshi

<HAXPES experiments>
Akira YASUI
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 : a-yasui

Yasumasa TAKAGI
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 : ytakagi

Norimasa SASABE
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 : sasabe

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