Search Results - "Kojima, Kenji M"
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Dimensional reduction by geometrical frustration in a cubic antiferromagnet composed of tetrahedral clusters
Published in Nature communications (19-07-2021)“…Dimensionality is a critical factor in determining the properties of solids and is an apparent built-in character of the crystal structure. However, it can be…”
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Difluoromethylborates and Muonium for the Study of Isonitrile Insertion Affording Phenanthridines via Imidoyl Radicals
Published in Journal of organic chemistry (07-07-2023)“…The 6-(difluoromethyl)phenanthridine unit is a highly attractive fluoroalkyl-substituted planar nitrogen heterocycle in pharmaceutical and agrochemical…”
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3
Observation of a Metastable P‐Heterocyclic Radical by Muonium Addition to a 1,3‐Diphosphacyclobutane‐2,4‐diyl
Published in Angewandte Chemie International Edition (09-07-2018)“…A 1,3‐diphosphacyclobutane‐2,4‐diyl contains a unique unsaturated cyclic unit, and the presence of radical‐type centers have been expected as a source of…”
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4
High Spatial Resolution Neutron Transmission Imaging Using a Superconducting Two-Dimensional Detector
Published in IEEE transactions on applied superconductivity (01-12-2021)“…Neutron imaging is one of the most powerful tools for nondestructive inspection owing to the unique characteristics of neutron beams, such as high permeability…”
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5
Producing Conventional and Transient Amino(mercapto)methyl Radicals by Addition of Muonium to a Crystalline Thioformamide (MesNHCH=S)
Published in Chemphyschem (17-06-2024)“…Muonium (Mu=μ+e−) is composed of a muon of light isotope of proton (μ+) and electron (e−) and can be used as a light surrogate for a hydrogen atom. In this…”
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Muonium in Stishovite: Implications for the Possible Existence of Neutral Atomic Hydrogen in the Earth's Deep Mantle
Published in Scientific reports (13-02-2015)“…Hydrogen in the Earth's deep interior has been thought to exist as a hydroxyl group in high-pressure minerals. We present Muon Spin Rotation experiments on SiO…”
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7
Observation of a Metastable P‐Heterocyclic Radical by Muonium Addition to a 1,3‐Diphosphacyclobutane‐2,4‐diyl
Published in Angewandte Chemie (09-07-2018)“…A 1,3‐diphosphacyclobutane‐2,4‐diyl contains a unique unsaturated cyclic unit, and the presence of radical‐type centers have been expected as a source of…”
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8
Muonium Addition to a peri‐Trifluoromethylated 9‐Phosphaanthracene Producing a High‐Energy Paramagnetic π‐Conjugated Fused Heterocycle
Published in Angewandte Chemie International Edition (02-11-2021)“…In this communication, we report muon spin rotation/resonance (μSR) studies for understanding radical reactivity of…”
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9
Two superconducting states with broken time-reversal symmetry in FeSe1−xSx
Published in Proceedings of the National Academy of Sciences - PNAS (23-05-2023)“…Iron-chalcogenide superconductors FeSe1−xSx possess unique electronic properties such as nonmagnetic nematic order and its quantum critical point. The nature…”
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10
μ+SR Knight shift of the hole-doped organic metal κ-(ET)4Hg3-δCl8, δ=22
Published in Hyperfine interactions (03-08-2024)“…We measured the μ+SR Knight shift in the hole-doped organic metal κ-(ET)4Hg3-δCl8, δ=22%, and re-analyzed temperature dependence of μ+SR Knight shift of the…”
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11
Muon Spin Rotation (μSR) for Characterizing Radical Addition to C=S in Xanthene-9-thione and Thioxanthene-9-thione
Published in Bulletin of the Chemical Society of Japan (15-05-2023)“…Muonium (μ+e−) can be produced by capture of an electron by a spin-polarized muon (μ+) and has been utilized as a light isotope of hydrogen. In this paper, we…”
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12
Orientation mapping of YbSn3 single crystals based on Bragg‐dip analysis using a delay‐line superconducting sensor
Published in Journal of applied crystallography (01-08-2023)“…Recent progress in high‐power pulsed neutron sources has stimulated the development of the Bragg‐dip and Bragg‐edge analysis methods using a two‐dimensional…”
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13
Two superconducting states with broken time-reversal symmetry in FeSe 1- x S x
Published in Proceedings of the National Academy of Sciences - PNAS (23-05-2023)“…Iron-chalcogenide superconductors FeSe S possess unique electronic properties such as nonmagnetic nematic order and its quantum critical point. The nature of…”
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14
Muonium Addition to the Radicalic Carbon in 1,3-Diphosphacyclobutane-2,4-diyl
Published in Bulletin of the Chemical Society of Japan (15-12-2021)“…When a crystalline 1,3-diphosphacyclobutane-2,4-diyl bearing a 3,5-dichloro-2,4,6-triazine substituent was irradiated with muon beam, two paramagnetic species…”
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15
Muon spin rotation (µSR) study of a sterically encumbered thioaldehyde
Published in Phosphorus, sulfur, and silicon and the related elements (03-07-2019)“…Here we report a preliminary muon spin rotation (µSR) analysis of a sterically encumbered 2,4,6-tri-t-butylthiobenzaldehyde. A powder sample of the…”
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16
Doping effect on the carrier scattering in iron-pnictide superconductors studied by charge transport
Published in The Journal of physics and chemistry of solids (01-05-2011)“…In order to reveal the role of “carrier doping” in the iron-based superconductors, we investigated the transport properties of the oxygen-deficient…”
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17
Muonium Addition to a peri‐Trifluoromethylated 9‐Phosphaanthracene Producing a High‐Energy Paramagnetic π‐Conjugated Fused Heterocycle
Published in Angewandte Chemie (02-11-2021)“…In this communication, we report muon spin rotation/resonance (μSR) studies for understanding radical reactivity of…”
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18
Neutron Transmission CB-KID Imager Using Samples Placed at Room Temperature
Published in Journal of low temperature physics (01-02-2024)“…We built a new cryostat to apply a current-biased kinetic inductance detector (CB-KID) for conducting neutron transmission imaging of room-temperature samples…”
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19
Application of Energy‐Resolving Neutron Imaging to Major‐Component Analyses of Materials Using Four‐Channel Superconducting Detector
Published in IEEJ transactions on electrical and electronic engineering (01-11-2024)“…We proposed a current‐biased kinetic inductance detector (CB‐KID) as a novel superconducting detector to construct a neutron transmission imager. The…”
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20
Materials and Life Science Experimental Facility at the Japan Proton Accelerator Research Complex IV: The Muon Facility
Published in Quantum beam science (01-06-2017)“…A muon experimental facility, known as the Muon Science Establishment (MUSE), is one of the user facilities at the Japan Proton Accelerator Research Complex,…”
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