Development of SPICA, New Dedicated Neutron Powder Diffractometer for Battery Studies

Yonemura, Masao; Mori, Kazuhiro; Kamiyama, Takashi; Fukunaga, Toshiharu; Torii, Shuki; Nagao, Miki; Ishikawa, Yoshihisa; Onodera, Yohei; Adipranoto, Dyah S.; Arai, Hideki; Uchimoto, Yoshiharu; Ogumi, Zempachi

doi:10.1088/1742-6596/502/1/012053

Cited by 45 publications

(41 citation statements)

References 4 publications

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“…Neutron powder diffraction data were taken using a time‐of‐flight powder diffractometer (BL09 beamline, SPICA) at the Japan Proton Accelerator Research Complex (J‐PARC) . XRD powder patterns were collected between 15° and 106° at a scan rate of 1°/min (in 2 θ ) on a Rigaku SmartLab diffractometer (MoK

\overset{}{α}

‐radiation) equipped with a high‐speed one‐dimensional X‐ray detector, D/teX Ultra .…”

Section: Methodsmentioning

confidence: 99%

Li₂NbO₃–Li₂MnO₃ Pseudo‐Binary Compounds Crystallizing into Distorted Rocksalt Structures

Matsunaga¹,

Shimoda²,

Okazaki³

et al. 2019

Physica Status Solidi (b)

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Li2(NbxMn1–x)O3 is one of the Li‐rich, Mn‐based cathode materials represented by the structural prototype Li2MnO3. Many of these cathode materials crystallize into monoclinic structures; however, our neutron and X‐ray structural analyses revealed that the Li2(NbxMn1–x)O3 compounds adopt NaCl‐type cubic structures in a wide compositional range, at least between x = 5 at.% and x = 50 at.%. In these NaCl‐type structures, Na sites are randomly occupied by the three kinds of metal cations and the Cl sites are solely occupied by O2− anions. These cubic crystals comprise distorted atomic arrangements that are randomly displaced from the atomic positions in a regular NaCl‐type structure. Density functional theory calculations based on these distorted NaCl‐type structure models indicate lower total energy than those of the corresponding monoclinic structures. This result demonstrates that the Li2(NbxMn1–x)O3 compounds can crystallize into such NaCl‐type structures to decrease the crystallization energy.

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\overset{}{α}

‐radiation) equipped with a high‐speed one‐dimensional X‐ray detector, D/teX Ultra .…”

Section: Methodsmentioning

confidence: 99%

Li₂NbO₃–Li₂MnO₃ Pseudo‐Binary Compounds Crystallizing into Distorted Rocksalt Structures

Matsunaga¹,

Shimoda²,

Okazaki³

et al. 2019

Physica Status Solidi (b)

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“…4), resulting in the efficiency as chosen as a compromise between y and depth of the detector. type design is based on the require-Instrument [12][13][14], a high intensity at FRM II. Fig.…”

Section: The Dream Powder Diffraction Detectormentioning

confidence: 99%

Neutron detectors for the ESS diffractometers

et al. 2017

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The ambitious instrument suite for the future European Spallation Source whose civil construction started recently in Lund, Sweden, demands a set of diverse and challenging requirements for the neutron detectors. For instance, the unprecedented high flux expected on the samples to be investigated in neutron diffraction or reflectometry experiments requires detectors that can handle high counting rates, while the investigation of sub-millimeter protein crystals will only be possible with large-area detectors that can achieve a position resolution as low as 200 µm. This has motivated an extensive research and development campaign to advance the state-of-the-art detector and to find new technologies that can reach maturity by the time the ESS will operate at full potential. This paper presents the key detector requirements for three of the Time-of-Flight (TOF) diffraction instrument concepts selected by the Scientific Advisory Committee to advance into the phase of preliminary engineering design. We discuss the detector technologies commonly employed at the existing similar instruments and their major challenges for ESS. The detector technologies selected by the instrument teams to collect the diffraction patterns are also presented. Analytical calculations, Monte-Carlo simulations, and real experimental data are used to develop a generic method to estimate the event rate in the diffraction detectors. We apply this method to make predictions for the future diffraction instruments, and thus provide additional information that can help the instrument teams with the optimisation of the detector designs.

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“…Therefore, SPICA was optimized to have the sample position of 52 m from the thin side of the decoupled poisoned moderator for achieving high resolution and to adopt an elliptical supermirror guide tube to enhance neutrons at the sample position. As a result, the highest ∆d/d of 0.08% is achieved at the back-scattering bank, and the neutron intensity increased to four times higher than that of the tapered-straight guide [22]. The specifications of SPICA are summarized in Table 9.…”

Section: Special Environment Powder Diffractometer Spicamentioning

confidence: 99%

Materials and Life Science Experimental Facility (MLF) at the Japan Proton Accelerator Research Complex II: Neutron Scattering Instruments

Nakajima

Kawakita

Itoh

et al. 2017

QuBS

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Abstract:The neutron instruments suite, installed at the spallation neutron source of the Materials and Life Science Experimental Facility (MLF) at the Japan Proton Accelerator Research Complex (J-PARC), is reviewed. MLF has 23 neutron beam ports and 21 instruments are in operation for user programs or are under commissioning. A unique and challenging instrumental suite in MLF has been realized via combination of a high-performance neutron source, optimized for neutron scattering, and unique instruments using cutting-edge technologies. All instruments are/will serve in world-leading investigations in a broad range of fields, from fundamental physics to industrial applications. In this review, overviews, characteristic features, and typical applications of the individual instruments are mentioned.

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Development of SPICA, New Dedicated Neutron Powder Diffractometer for Battery Studies

Cited by 45 publications

References 4 publications

Li₂NbO₃–Li₂MnO₃ Pseudo‐Binary Compounds Crystallizing into Distorted Rocksalt Structures

Li₂NbO₃–Li₂MnO₃ Pseudo‐Binary Compounds Crystallizing into Distorted Rocksalt Structures

Neutron detectors for the ESS diffractometers

Materials and Life Science Experimental Facility (MLF) at the Japan Proton Accelerator Research Complex II: Neutron Scattering Instruments

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Development of SPICA, New Dedicated Neutron Powder Diffractometer for Battery Studies

Cited by 45 publications

References 4 publications

Li2NbO3–Li2MnO3 Pseudo‐Binary Compounds Crystallizing into Distorted Rocksalt Structures

Li2NbO3–Li2MnO3 Pseudo‐Binary Compounds Crystallizing into Distorted Rocksalt Structures

Neutron detectors for the ESS diffractometers

Materials and Life Science Experimental Facility (MLF) at the Japan Proton Accelerator Research Complex II: Neutron Scattering Instruments

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Product

Resources

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Li₂NbO₃–Li₂MnO₃ Pseudo‐Binary Compounds Crystallizing into Distorted Rocksalt Structures

Li₂NbO₃–Li₂MnO₃ Pseudo‐Binary Compounds Crystallizing into Distorted Rocksalt Structures