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Hattori, Takanori; Sano, Asami; Machida, Shinichi*; Abe, Jun*; Funakoshi, Kenichi*; Okazaki, Nobuo*
Nihon Kessho Gakkai-Shi, 59(6), p.301 - 308, 2017/12
PLANET is a neutron beamline dedicated to high-pressure experiments. Combining the intense neutron source of J-PARC and high-pressure devices designed for time-of-flight powder neutron diffraction enables precise structure analysis of crystal, liquid and amorphous solids over wide pressure and temperature region of 0-20 GPa and 77-2000K. This beamline is effective for various studies in geophysics, planetary science, physics and chemistry. This paper overviews the beamline and introduces recent results obtained at PLANET.
Hattori, Takanori; Sano, Asami; Komatsu, Kazuki*; Machida, Shinichi*; Abe, Jun*; Funakoshi, Kenichi*
no journal, ,
PLANET is a high-pressure neutron beamline recently constructed at J-PARC. The most characteristic features of the beamline are its high performance in obtaining clean data with almost no contamination of the signal from a sample container and wide accessible d-spacing range. The beamline is equipped with various high pressure presses, such as the large six-axis multi-anvil high-pressure press (ATSUHIME), Paris-Edinburgh presses, the low-temperature press and a diamond anvil cell. By using these devices, in-situ neutron diffraction experiments are possible over wide PT condition currently of 40-2000 K and/or up to 20 GPa. Combining these presses with the aforementioned beamline characters enables the precise structure determination not only of crystalline materials but also of liquid and amorphous materials. In this presentation, I will introduce the specification of the beamline and recent results obtained at PLANET.
Hattori, Takanori; Sano, Asami; Arima, Hiroshi*; Komatsu, Kazuki*; Funakoshi, Kenichi*; Abe, Jun*; Machida, Shinichi*; Ouchi, Keiichi*; Okazaki, Nobuo*
no journal, ,
PLANET is a high-pressure neutron beamline recently constructed at MLF in J-PARC. Most characteristic feature of the beamline is to possess the large six-axis multi-anvil high-pressure ATSUHIME press, which enables in-situ neutron diffraction under high pressure and high temperature condition up to 10 GPa and 2000 K. Smaller presses, a Paris-Edinburgh press and Mito cell, are also available and the accessible PT conditions with each device are 20 GPa at room temperature and 5 GPa at 77 K, respectively. The beamline is equipped with incident slits and receiving collimators that eliminates parasitic scattering from the high-pressure cell assembly to obtain clean data. The high performance of the diffractometer and low-parasitic scattering characteristics enables precise structure determination of crystals and liquids under high pressure and temperature conditions. In this presentation, the specification of the PLANET and recent results obtained at PLANET are introduced.
Hattori, Takanori
no journal, ,
PLANET is a neutron powder diffraction beamline dedicated to high-pressure experiments, which was constructed at the Materials and Life Science Experimental Facility in J-PARC. The most characteristic feature is the capability of structure analysis on crystals, liquids and amorphous solids under high-pressure and high-temperature condition (
10 GPa, 2000K) using a large multi-anvil press ATSUHIME specially designed for pulsed neutron diffraction experiments. Additionally, the high-pressure experiments can be performed at low temperatures (
77 K) using various types of presses. Because of these unique characters, the PLANET is used in various fields of sciences, such as geophysics and materials science. The details will be introduced in the presentation.
Hattori, Takanori
no journal, ,
To discuss the specification of the high-pressure beamtime to be constructed at Cheese Spallation Neutron Source (CSNS), I introduced the details on the concept, design and performance of the high-pressure neutron diffractometer PLANET constructed at J-PARC in Japan. Besides them, tips to determine the instrumental parameters for the beamline at CSNS are introduced.
Hattori, Takanori; Sano, Asami; Machida, Shinichi*; Abe, Jun*; Funakoshi, Kenichi*; Okazaki, Nobuo*; Kakizawa, Sho*
no journal, ,
PLANET is the neutron beamline dedicated to high-pressure experiments in J-PARC. One of most characteristic features is its ability to conduct diffraction measurements simultaneously at high pressures and high temperatures up to 24 GPa and 1200 K, respectively. Another characteristic feature is its ability to collect clean pattern without parasitic scattering from materials around sample by defining the diffraction gauge volume with narrow incident slits and radial collimators with a field of view of 0.8-3.0 mm at the sample position. This enables precise structure determination not only of crystals but also of liquids and amorphous solids. Furthermore, it also enables the use of smaller samples, which contributes to increase maximum available pressure. In this presentation, the performance and recent developments of the beamline will be introduced along with recent scientific results obtained at PLANET.
