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Teshigawara, Makoto; Ikeda, Yujiro*; Yan, M.*; Muramatsu, Kazuo*; Sutani, Koichi*; Fukuzumi, Masafumi*; Noda, Yohei*; Koizumi, Satoshi*; Saruta, Koichi; Otake, Yoshie*
Nanomaterials (Internet), 13(1), p.76_1 - 76_9, 2023/01
Times Cited Count：2 Percentile：71.03(Chemistry, Multidisciplinary)To enhance neutron intensity below cold neutrons, it is proposed that nanosized graphene aggregation could facilitate neutron coherent scattering under particle size conditions similar to nanodiamond. It might also be possible to use it in high neutron radiation conditions due to graphene's strong sp2 bonds. Using the RIKEN accelerator-driven compact neutron source and iMATERIA at J-PARC, we performed neutron measurement experiments, total neutron cross-section, and small-angle neutron scattering on nanosized graphene aggregation. The measured data revealed, for the first time, that nanosized graphene aggregation increased the total cross-sections and small-angle scattering in the cold neutron energy region, most likely due to coherent scattering, resulting in higher neutron intensities, similar to nanodiamond.
勅使河原 誠; 猿田 晃一
村松 一生*; 池田 裕二郎*; 大竹 淑恵*; 岩田 英里*; 高橋 一馬*; 須谷 康一*
JP, 2022-161968 
Patent licensing information
【課題】賦形性がよく、高い放射線場での耐久性にも優れ、さらに、干渉性散乱によって冷中性子や極冷中性子を高強度化することができる、冷中性子や極冷中性子の反射材を提供する。 【解決手段】ナノ炭素構造体を含んでなる三次元形状の炭素構造体であって、前記ナノ炭素構造体はグラフェン骨格を有する20NM未満の厚さの薄片状炭素が花弁状に固定された花弁状構造、および、1~100NMの大きさのシード状構造体が集まって形成された凸凹状構造の少なくとも一つの構造を有するものである、炭素構造体。
勅使河原 誠; 猿田 晃一
村松 一生*; 池田 裕二郎*; 大竹 淑恵*; 岩田 英里*; 高橋 一馬*; 須谷 康一*
JP, PCT/JP2023/035241 Patent licensing information
Provided is a carbon structure having a three-dimensional shape containing nano-carbon structures, wherein the nano-carbon structures have at least one structure from among a petal-like structure, in which flaky carbon having a graphene framework and a thickness of less than 20 nm is fixed in a petal-like shape, and an uneven structure formed by a collection of seed-like structures having a size of 1 to 100 nm. The carbon structure has favorable shapability and excellent durability in high radiation fields, and is effective as a reflective material for cold neutrons and very cold neutrons, the reflective material being capable of increasing the strength of the cold neutrons and very cold neutrons by coherent scattering.
勅使河原 誠; 猿田 晃一
村松 一生*; 池田 裕二郎*; 大竹 淑恵*; 岩田 英里*; 高橋 一馬*; 須谷 康一*
JP, PCT/JP2023/035241 Patent licensing information
Provided is a carbon structure having a three-dimensional shape containing nano-carbon structures, wherein the nano-carbon structures have at least one structure from among a petal-like structure, in which flaky carbon having a graphene framework and a thickness of less than 20 nm is fixed in a petal-like shape, and an uneven structure formed by a collection of seed-like structures having a size of 1 to 100 nm. The carbon structure has favorable shapability and excellent durability in high radiation fields, and is effective as a reflective material for cold neutrons and very cold neutrons, the reflective material being capable of increasing the strength of the cold neutrons and very cold neutrons by coherent scattering.
勅使河原 誠; 猿田 晃一
村松 一生*; 池田 裕二郎*; 大竹 淑恵*; 岩田 英里*; 高橋 一馬*; 須谷 康一*
JP, PCT/JP2023/035241 Patent licensing information
Provided is a carbon structure having a three-dimensional shape containing nano-carbon structures, wherein the nano-carbon structures have at least one structure from among a petal-like structure, in which flaky carbon having a graphene framework and a thickness of less than 20 nm is fixed in a petal-like shape, and an uneven structure formed by a collection of seed-like structures having a size of 1 to 100 nm. The carbon structure has favorable shapability and excellent durability in high radiation fields, and is effective as a reflective material for cold neutrons and very cold neutrons, the reflective material being capable of increasing the strength of the cold neutrons and very cold neutrons by coherent scattering.
