Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Hu, F. F.*; Qin, T. Y.*; Ao, N.*; Su, Y. H.; Zhou, L.*; Xu, P. G.; Parker, J. D.*; Shinohara, Takenao; Chen, J.*; Wu, S. C.*
Engineering Fracture Mechanics, 306, p.110267_1 - 110267_18, 2024/08
Times Cited Count:2 Percentile:51.41(Mechanics)Zhang, Z.*; Hattori, Takanori; Song, R.*; Yu, D.*; Mole, R.*; Chen, J.*; He, L.*; Zhang, Z.*; Li, B.*
Journal of Applied Physics, 136(3), p.035105_1 - 035105_8, 2024/07
Times Cited Count:1 Percentile:53.26(Physics, Applied)Solid-state refrigeration using barocaloric materials is environmentally friendly and highly efficient, making it a subject of global interest over the past decade. Here, we report giant barocaloric effects in sodium hexafluorophosphate (NaPF) and sodium hexafluoroarsenate (NaAsF
) that both undergo a cubic-to-rhombohedral phase transition near room temperature. We have determined that the low-temperature phase structure of NaPF
is a rhombohedral structure with space group R
and NaAsF
, i.e., F
, E
, and A
. The phase transition temperature varies with pressure at a rate of dT
/dP = 250 and 310 K/GPa for NaPF
and NaAsF
. The pressure-induced entropy changes of NaPF
and NaAsF
are determined to be around 45.2 and 35.6J kg
K
, respectively. The saturation driving pressure is about 40 MPa. The pressure-dependent neutron powder diffraction suggests that the barocaloric effects are related to the pressure-induced cubic-to-rhombohedral phase transitions.
Nguyen, B. V. C.*; Murakami, Kenta*; Chena, L.*; Phongsakorn, P. T.*; Chen, X.*; Hashimoto, Takashi; Hwang, T.*; Furusawa, Akinori; Suzuki, Tatsuya*
Nuclear Materials and Energy (Internet), 39, p.101639_1 - 101639_9, 2024/06
Times Cited Count:0 Percentile:0.00(Nuclear Science & Technology)Hwang, Y.*; Puebla, J.*; Kondo, Kota*; Gonzalez-Ballestero, C.*; Isshiki, Hironari*; Snchez Mu
oz, C.*; Liao, L.*; Chen, F.*; Luo, W.*; Maekawa, Sadamichi*; et al.
Physical Review Letters, 132(5), p.056704_1 - 056704_7, 2024/01
Times Cited Count:9 Percentile:96.33(Physics, Multidisciplinary)Zhang, A.*; Deng, K.*; Sheng, J.*; Liu, P.*; Kumar, S.*; Shimada, Kenya*; Jiang, Z.*; Liu, Z.*; Shen, D.*; Li, J.*; et al.
Chinese Physics Letters, 40(12), p.126101_1 - 126101_8, 2023/12
Times Cited Count:9 Percentile:83.30(Physics, Multidisciplinary)Sarmento, T.*; Wnderlich, D.*; Fantz, U.*; Friedl, R.*; Rauner, D.*; Tsumori, Katsuyoshi*; Shenjin, L.*; Chen, W.*; Bollinger, D.*; Oguri, Hidetomo; et al.
AIP Conference Proceedings 2373, p.110001_1 - 110001_18, 2021/08
In preparation for NIBS 2020 various labs prepared reference sheets containing key information about their ion sources and the machines that they serve. The contents of the reference sheets have been formatted and edited into this paper for posterity and ease of access.
Mheust, R.*; Castelle, C. J.*; Matheus Carnevali, P. B.*; Farag, I. F.*; He, C.*; Chen, L.-X.*; Amano, Yuki; Hug, L. A.*; Banfield, J. F.*
ISME Journal, 14(12), p.2907 - 2922, 2020/12
Times Cited Count:64 Percentile:96.11(Ecology)Vaquero, V.*; Jungclaus, A.*; Rodrguez-S
nchez, J. L.*; Tostevin, J. A.*; Doornenbal, P.*; Wimmer, K.*; Chen, S.*; Orlandi, R.; 26 of others*
Physics Letters B, 795, p.356 - 361, 2019/08
Times Cited Count:4 Percentile:36.08(Astronomy & Astrophysics)Wang, Y.*; Dong, X.*; Tang, X.*; Zheng, H.*; Li, K.*; Lin, X.*; Fang, L.*; Sun, G.*; Chen, X.*; Xie, L.*; et al.
Angewandte Chemie; International Edition, 58(5), p.1468 - 1473, 2019/01
Times Cited Count:49 Percentile:83.23(Chemistry, Multidisciplinary)Pressure-induced polymerization (PIP) of aromatics is a novel method to construct sp-carbon frameworks, and nanothreads with diamond-like structures were synthesized by compressing benzene and its derivatives. Here by compressing benzene-hexafluorobenzene cocrystal(CHCF), we identified H-F-substituted graphane with a layered structure in the PIP product. Based on the crystal structure determined from the in situ neutron diffraction and the intermediate products identified by the gas chromatography-mass spectrum, we found that at 20 GPa CHCF forms tilted columns with benzene and hexafluorobenzene stacked alternatively, which leads to a [4+2] polymer, and then transfers to short-range ordered hydrogenated-fluorinated graphane. The reaction process contains [4+2] Diels-Alder, retro-Diels-Alder, and 1-1' coupling, and the former is the key reaction in the PIP. Our studies confirmed the elemental reactions of the CHCF for the first time, which provides a novel insight into the PIP of aromatics.
Li, Z.*; He, T.*; Matsumura, Daiju; Miao, S.*; Wu, A.*; Liu, L.*; Wu, G.*; Chen, P.*
ACS Catalysis, 7(10), p.6762 - 6769, 2017/10
Times Cited Count:181 Percentile:96.63(Chemistry, Physical)Chen, Y. H.*; Tassan-Got, L.*; Harada, Hideo; Kimura, Atsushi; n_TOF Collaboration*; 130 of others*
EPJ Web of Conferences, 146, p.03020_1 - 03020_4, 2017/09
Times Cited Count:1 Percentile:58.71(Nuclear Science & Technology)The experimental area 2 (EAR-2) at CERNs neutron time-of-flight facility (n_TOF), which is operational since 2014, is designed and built as a short-distance complement to the experimental area 1 (EAR-1). The Parallel Plate Avalanche Counter (PPAC) monitor experiment was performed to characterize the beam profile and the shape of the neutron flux at EAR-2. The prompt -flash which is used for calibrating the time-of-flight at EAR-1 is not seen by PPAC at EAR-2, shedding light on the physical origin of this
-flash.
Wang, C.*; Daiwei, Y.*; Liu, X.*; Chen, R.*; Du, X.*; Hu, B.*; Wang, L.*; Iida, Kazuki*; Kamazawa, Kazuya*; Wakimoto, Shuichi; et al.
Physical Review B, 96(8), p.085111_1 - 085111_5, 2017/08
Times Cited Count:9 Percentile:42.67(Materials Science, Multidisciplinary)Hu, D.*; Yin, Z.*; Zhang, W.*; Ewings, R. A.*; Ikeuchi, Kazuhiko*; Nakamura, Mitsutaka; Roessli, B.*; Wei, Y.*; Zhao, L.*; Chen, G.*; et al.
Physical Review B, 94(9), p.094504_1 - 094504_7, 2016/09
Times Cited Count:20 Percentile:61.68(Materials Science, Multidisciplinary)The temperature and energy dependence of spin excitations in an optimally P-doped BaFe(As
P
)
superconductor (T
= 30 K) were studied by using inelastic neutron scattering. Experimental results are consistent with calculations from a combined density functional theory and dynamical mean field theory, and suggest that the decreased average pnictogen height in BaFe
(As
P
)
reduces the strength of electron correlations and increases the effective bandwidth of magnetic excitation.
Yan, S. Q.*; Li, Z. H.*; Wang, Y. B.*; Nishio, Katsuhisa; Makii, Hiroyuki; Su, J.*; Li, Y. J.*; Nishinaka, Ichiro; Hirose, Kentaro; Han, Y. L.*; et al.
Physical Review C, 94(1), p.015804_1 - 015804_5, 2016/07
Times Cited Count:7 Percentile:46.82(Physics, Nuclear)Nakamura, Toshiyuki*; Matsuda, Yasuhiro*; Her, J.-L.*; Kindo, Koichi*; Michimura, Shinji*; Inami, Toshiya; Mizumaki, Masaichiro*; Kawamura, Naomi*; Suzuki, Motohiro*; Chen, B.*; et al.
Journal of the Physical Society of Japan, 81(11), p.114702_1 - 114702_11, 2012/11
Times Cited Count:11 Percentile:56.50(Physics, Multidisciplinary)The X-ray absorption and magnetic circular dichroism (MCD) spectra at the Yb L edge were measured in the mixed-valent heavy fermion compound YbAgCu
at high magnetic fields and low temperatures. The magnetic-field-temperature (H-T) phase boundary determined by the valence state is in very good agreement with that determined by the magnetization. It is clearly found that the metamagnetism of this compound is due to the field induced valence transition. A distinctive positive peak of the XMCD spectra appears in the vicinity of the white line of the absorption due to Yb
state, while no feature is observed in the XMCD spectra corresponding to the Yb
state. A small negative XMCD peak was observed at a lower energy and was attributed to the quadrupole trasition from theoretical calcuration, which explains its peculicar magnetic field dependence.
Wang, L.*; Imai, Yoshiyuki; Tanaka, Nobuyuki; Kasahara, Seiji; Kubo, Shinji; Onuki, Kaoru; Chen, S.*; Zhang, P.*; Xu, J.*
International Journal of Hydrogen Energy, 37(17), p.12967 - 12972, 2012/09
Times Cited Count:12 Percentile:28.51(Chemistry, Physical)Optimization of purification operation of the Bunsen reaction products, HSO
phase and HIx phase, is one of the problems for industrialization of the thermochemical hydrogen production iodine-sulfur process. HI impurity is contained in H
SO
phase, and H
SO
impurity is in HIx phase: these impurities should be removed by purification. Effect of pressure on purification of these phases was simulated as an investigation of the operation by a chemical process simulator ESP with a thermodynamic database based on the Mixed Solvent Electrolyte model. The simulation was of the reaction equilibrium and phase equilibrium. As the result of the simulation in the range of 0.2-6 bar, effective removal of impurities and suppression of undesirable side reactions were suggested in the purification of H
SO
phase at below atmospheric pressure. On the other hand, advantageous pressure in the viewpoint of equilibrium was not found in purification of HIx phase.
Matsuda, Yasuhiro*; Nakamura, Toshiyuki*; Her, J.-L.*; Kindo, Koichi*; Michimura, Shinji*; Inami, Toshiya; Mizumaki, Masaichiro*; Kawamura, Naomi*; Suzuki, Motohiro*; Chen, B.*; et al.
Journal of the Physical Society of Japan, 81(1), p.015002_1 - 015002_2, 2012/01
Times Cited Count:11 Percentile:56.50(Physics, Multidisciplinary)The valence change of Yb ion in YbAgCu was measured by means of X-ray absorption spectroscopy under high magnetic fields up to 35T. The valence state of Yb in YbAgCu
at 4.8K significantly increases at the metamagnetic transition. The saturation value of
at 55T is evaluated as 2.97 using the relation
at 35T. This value is in good agreement with
for the related compound YbInCu
at high temperatures and the Yb valence in the localized high-field phase. We conclude that the metamagnetic transition in YbAgCu
arises from the valence transition, as theoretically predicted.
Chang, L.-J.; Schweika, W.*; Kao, Y.-J.*; Chou, Y. Z.*; Peron, J.*; Br
ckel, T.*; Yang, H. C.*; Chen, Y. Y.*; Gardner, J. S.*
Physical Review B, 83(14), p.144413_1 - 144413_7, 2011/04
Times Cited Count:9 Percentile:37.78(Materials Science, Multidisciplinary)Kawase, Keigo; Kando, Masaki; Hayakawa, Takehito; Daito, Izuru; Kondo, Shuji; Homma, Takayuki; Kameshima, Takashi; Kotaki, Hideyuki; Chen, L.*; Fukuda, Yuji; et al.
Nuclear Physics Review, 26(Suppl.), p.94 - 99, 2009/07
We constructed MeV- and sub-MeV-photon sources by means of Compton backscattering with a laser light and an electron beam at SPring-8 and KPSI-JAEA. MeV-photon source consists of a continuous-wave optically-pumped far infrared laser and an 8-GeV stored electron beam. Sub-MeV-photon source consists of a Nd:YAG pulse-laser and an 150-MeV electron beam accelerated by a microtron. Both source have been succeeded backscattered photon generation. In this talk, I will present characteristics and future prospects of these photon sources.
Song, G.*; Kobayashi, Masaki*; Hwang, J. I.*; Kataoka, Takashi*; Takizawa, Masaru*; Fujimori, Atsushi; Okochi, Takuo; Takeda, Yukiharu; Okane, Tetsuo; Saito, Yuji; et al.
Physical Review B, 78(3), p.033304_1 - 033304_4, 2008/07
Times Cited Count:8 Percentile:36.06(Materials Science, Multidisciplinary)