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Three-dimensional crystal defect imaging by STEm depth sectioning

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Chinese Physics B 2024年第8期33卷 2-7页

作者： Ryo Ishikawa Naoya shibata Yuichi Ikuhara Institute of Engineering Innovation The University of TokyoBunkyoTokyo 113-8656Japan

One of the major innovations awaiting in electron microscopy is full three-dimensional imaging at atomic *** the success of aberration correction to deep sub-angstrom lateral resolution,spatial resolution in depth is still far from atomic *** scanning transmission electron microscopy(STEm),this poor depth resolution is due to the limitation of the illumination *** overcome this physical limitation,it is essential to implement a next-generation aberration corrector in STEm that can significantly improve the depth *** review discusses the capability of depth sectioning for three-dimensional imaging combined with large-angle illumination ***,the statistical analysis approach remarkably improves the depth resolution,making it possible to achieve three-dimensional atomic resolution imaging at oxide *** will also discuss the future prospects of three-dimensional imaging at atomic resolution by STEm depth sectioning.

关键词： atomic-resolution STEm STEm depth sectioning depth resolution dopants surface topography

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^(146)Sm核高自旋态的实验观测

高能物理与核物理 1997年第2期21卷 110-115页

作者：张玉虎 Y.Gono T.morikaawa E.Ideguchi m.shibata T.Kishida K.morida A.Yoshita H.Kumagai T.murakami m.Oshima.H.Iimura m.shibata S.Hamata H.Kusakari m.Sugawara m.Ogawa m.Nagajima m.Ishihara 中国科学院近代物理研究所兰州730000 Department of Physics Kyushu UniversityHakozakiFukuoka 812Japan Japan Atomic Energy Research Institute TokaiIbaragi 319-11Japan Riken Wako-shiSaitama 351-01Japan National Institute of Radiological Sciences InageChiba 263Japan Faculty of Education Chiba UniversityChiba 263Japan Faculty of Natural Sciences Chiba Institute of TechnologyNarashinoChiba 275Japan) The graduate School of Nagatsuta Tokyo Institute of TechnologyYokohamaKanagawa 227Japan

用能量为95 meV 的^(13)C 束流,轰击天然厚 Ba 靶,对^(146)Sm 的高自旋态进行了实验研究,观测到17条新的γ射线和11条新能级,能级纲图延伸到了激发能为10.3 meV 处,在此高激发能区,能级结构仍呈现粒子组态的特性,没有发现长寿命的同质... 详细信息

用能量为95 meV 的^(13)C 束流,轰击天然厚 Ba 靶,对^(146)Sm 的高自旋态进行了实验研究,观测到17条新的γ射线和11条新能级,能级纲图延伸到了激发能为10.3 meV 处,在此高激发能区,能级结构仍呈现粒子组态的特性,没有发现长寿命的同质异能态.

关键词： γ射线新能级高自旋态钐146

^(143)Nd中高自旋同质异能态的识别与研究

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高能物理与核物理 2000年第5期24卷 408-413页

作者：周小红 E.Ideguchi T.Kishida m.Ishihara H.Tsuchida Y.Gono T.morikawa m.shibata H.Watanabe m.miyake T.Tsutsumi S.motomura S.mitarai 中国科学院近代物理研究所兰州730000 RIKEN Hirosawa2-1 WakoSaitama351-01 DepartmentofPhysicsKyushuUniversity Hakozaki6-10-1Fukuoka812

利用能量为 80meV的18O束流 ,通过130 Te( 18O ,5n)反应研究了143Nd的高自旋态能级结构 .基于γ γ延迟符合、γ射线的角分布及线性极化测量 ,首次发现了143Nd的一个半寿命为 ( 35± 8)ns,自旋和宇称为 4 9/ 2 + 的同质异能态 .

关键词： γ-γ-t符合同质异能态高自旋钕143

East Asian VLBI Network observations of active galactic nuclei jets:imaging with KaVA+Tianma+Nanshan

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Research in Astronomy and Astrophysics 2021年第8期21卷 220-234页

作者： Yu-Zhu Cui Kazuhiro Hada motoki Kino Bong-Won Sohn Jongho Park Hyun-Wook Ro Satoko Sawada-Satoh Wu Jiang Lang Cui mareki Honma Zhi-Qiang Shen Fumie Tazaki Tao An Ilje Cho Guang-Yao Zhao Xiao-Peng Cheng Kotaro Niinuma Kiyoaki Wajima Ying-Kang Zhang Noriyuki Kawaguchi Juan-Carlos Algaba Shoko Koyama Tomoya Hirota Yoshinori Yonekura Nobuyuki Sakai Bo Xia Yong-Bin Jiang Lin-Feng Yu Wei Gou Ju-Yeon Hwang Yong-Chen Jiang Yun-Xia Sun Dong-Kyu Jung Hyo-Ryoung Kim Jeong-Sook Kim Hideyuki Kobayashi Jee-Won Lee Jeong-Ae Lee Hua Zhang Guang-Hui Li Zhi-Qiang Xu Peng Li Jung-Hwan Oh Se-Jin Oh Chung-Sik Oh Tomoaki Oyama Duk-Gyoo Roh Katsunori-m.shibata Wen Guo Rong-Bing Zhao Wei-Ye Zhong Jin-Qing Wang Wen-Jun Yang Hao Yan Jae-Hwan Yeom Bin Li Xiao-Fei Li Jian-Ping Yuan Jian Dong Zhong Chen Kazunori Akiyama Keiichi Asada Do-Young Byun Yoshiaki Hagiwara Jeffrey Hodgson Tae-Hyun Jung Kee-Tae Kim Sang-Sung Lee Kunwoo Yi Qing-Hui Liu Xiang Liu Ru-Sen Lu masanori Nakamura Sascha Trippe Na Wang Xue-Zheng Wang Bo Zhang Department of Astronomical Science The Graduate University for Advanced StudiesSOKENDAI2-21-1 OsawaMitakaTokyo 181-8588Japan mizusawa VLBI Observatory National Astronomical Observatory of Japan2-12 HoshigaokaMizusawaOshuIwate 023-0861Japan Kogakuin University of Technology and Engineering Academic Support Center2665-1 NakanoHachiojiTokyo 192-0015Japan Korea Astronomy and Space Science Institute Yuseong-guDaejeon 34055Korea Department of Astronomy Yonsei University50 Yonsei-roSeodaemun-guSeoul 03722Korea Department of Astronomy and Space Science University of Science and Technology217 Gajeong-roDaejeonKorea Institute of Astronomy and Astrophysics Academia Sinica645 N Aohoku PIHiloHI 96720USA Graduate School of Sciences and Technology for Innovation Yamaguchi UniversityYoshida 1677-1YamaguchiYamaguchi 753-8512Japan Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830011China Key Laboratory of Radio Astronomy Chinese Academy of SciencesNanjing 210008China Institute of Astronomy The University of Tokyo2-21-1 OsawaMitakaTokyo 181-0015Japan Instituto de Astrofísica de Andalucía-CSIC Glorieta de la Astronomia s/nGranada E-18008Spain Department of Physics Faculty of ScienceUniversity of MalayaKuala Lumpur 50603Malaysia Center for Astronomy Ibaraki University2-1-1 BunkyoMitoIbaraki 310-8512Japan Space Light Laboratory 77Yangjaedae-ro 86 roadGangdong-guSeoulKorea massachusetts Institute of Technology Haystack Observatory 99 Millstone RoadWestfordMA 01886USA National Radio Astronomy Observatory 520 Edgemont RdCharlottesvilleVA 22903USA Toyo University 5-28-20 HakusanBunkyo-kuTokyo 112-8606Japan Department of Physics and Astronomy Seoul National UniversityGwanak-guSeoul 08826Korea max Planck Institute for Radio Astronomy Auf dem hiigel 69Bonn 53121Germany SNU Astronomy Research Center Seoul National UniversityGwanak-guSeoul 08826Korea

The East Asian Very Long Baseline Interferometry(VLBI) Network(EAVN) is a rapidly evolving international VLBI array that is currently promoted under joint efforts among China,Japan and *** aims at forming a joint VLBI Network by combining a large number of radio telescopes distributed over East Asian *** the combination of the Korean VLBI Network(KVN) and the VLBI Exploration of Radio Astrometry(VERA) into Ka VA,further expansion with the joint array in East Asia is actively *** we report the first imaging results(at 22 and 43 GHz) of bright radio sources obtained with Ka VA connected to Tianma 65-m and Nanshan 26-m Radio Telescopes in *** test the EAVN imaging performance for different sources,we observed four active galactic nuclei(AGN) having different brightness and *** a result,we confirmed that the Tianma 65-m Radio Telescope(TmRT) significantly enhances the overall array sensitivity,a factor of 4 improvement in baseline sensitivity and 2 in image dynamic range compared to the case of Ka VA *** addition of the Nanshan 26-m Radio Telescope(NSRT) further doubled the east-west angular *** the resulting high-dynamic-range,high-resolution images with EAVN(Ka VA+TmRT+NSRT),various fine-scale structures in our targets,such as the counter-jet in m87,a kink-like morphology of the 3 C 273 jet and the weak emission in other sources are successfully *** demonstrates the powerful capability of EAVN to study AGN jets and to achieve other science goals in *** expansion of EAVN will further enhance the angular resolution,detection sensitivity and frequency coverage of the network.

关键词： galaxies:active galaxies:jets instrumentation:interferometers radio continuum:galaxies

Influence of cerium ions on structure-dependent magnetic properties of Ba-Sr m-type hexaferrite nanocrystals

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Journal of Rare Earths 2024年第2期42卷 364-372,I0005页

作者： Ram A.Pawar Sunil m.Patange P.m.Dighe Sher Singh meena Abdullah GAl-Sehemi mehboobali Pannipara Santosh S.Jadhav Department of Physics ArtsCommerce and Science CollegeAhmednagar413711MaharashtraIndia Department of Physics Shri Krishna MahavidyalayaGunjotiDistOsmanabad413606MaharashtraIndia Padmashri Vikhe Patil College of Arts Science and CommercePravaranagarA/P.Loni(Kd)Tal.RahataDistAhmednagar413713MaharashtraIndia Solid State Physics Division Bhabha Atomic Research CentreMumbai400085MaharashtraIndia Department of Chemistry King Khalid UniversityAbha61413Saudi Arabia Department of Physics D.S.M's ArtsCommerce and Science CollegeJintur431509MaharashtraIndia

The present study is a systematic effort to investigate the structure-sensitive magnetic parameters of Ce^(3+) substituted Ba-Sr hexaferrite nanocrystals chemically formulated as Ba_(0.5)Sr_(0.5)Ce_(x)Fe_(12-x)O_(19) where x=0.0-0.2 with Δx=*** hexaferrite powders were prepared using the sol-gel self-ignition route and structurally characterized by means of powder X-ray diffraction and Fourier transform infrared *** creation of the m-type hexaferrite phase within the synthesized samples was revealed from the Rietveld refinement of the X-ray *** occurrence of a secondary phase of CeO_(2) was revealed within the hexaferrites for the substitution,x> *** refined X-ray diffraction data were utilized to compute the lattice parameters,X-ray density,and lattice parameter *** crystal structure plotted from the refined XRD data reveals the occupancy of the ions at different lattice *** XPS data of the hexaferrite were analyzed to confirm the oxidation states of the constituent *** nanocrystalline nature of the hexaferrites was revealed from the crystallite sizes calculated using Scherer's *** analysis of FTIR spectra confirms that only a fraction of Ce^(3+)accommodated in the lattice and the remaining Ce content reside in the form of the CeO_(2) *** morphology of the hexaferrites was analyzed from the FESEm profiles of the ferrite *** magnetic behavior study was performed by analyzing the Curie temperature,hysteresis loops,and hyperfine interactions by means of susceptibility,V.S.m,and mossbauer spectroscopy,*** hexaferrites with increasing coercivity,decreasing saturation magnetization,and decreasing Curie temperature are reported in the *** substituted Ce^(3+)ions inhibit the grain growth and create lattice imperfections giving rise to hexaferrites with tuned magnetic parameters suitable for different applications.

关键词： Ba-Sr hexaferrite Ce^(3+)substitution XPS Saturation magnetization Coercivity m?ssbauer spectroscopy

西藏羊八井广延空气簇射阵列性能的monte Carlo研究

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高能物理与核物理 1993年第5期17卷 385-390页

作者： m.Amenomori 白占武曹臻丁林垲冯振勇 K.Hibino N.Hotta 黄庆霍安祥贾焕玉江光佐焦善庆 F.Kajino K.Kasahara 拉巴次仁梅东明孟烈孟宪茹米玛次仁 K.mizitani 木钧 H.Nanjo m.Nishizawa 努桑 m.Ohnishi I.Ohta 任敬儒 To.Saito m.Sakata 施志政 m.shibata T.Shirai 孙欣新 H.Sugimoto 台安 K.Taira 谭有恒 N.Tateyama S.Torii 王辉王家祥温诚忠 Y.Yamamoto 余光泽袁澎 T.Yuda 曾家刚赵春华张春生张慧敏张力张鸣扎桑扎西次仁周文德日本弘前大学中国西南交通大学物理系成都610031 中国科学院高能物理研究所北京100039 日本东京大学宇宙线研究所日本宇都宫大学日本甲南大学日本神奈川大学中国西藏大学数理系拉萨851501 日本琦玉大学中国云南大学物理系昆明650091 日本横滨国立大学日本相模工业大学

本文用monte Carlo方法研究西藏羊八井空气簇射阵列性能。确定好事例判选标准.簇射中心定位精度达3.4m.原初粒子到达方向角分辨率好于1.1°.原初粒子能量按lgE_0=lg(0.45∑N_i)±0.226确定,其中E_0(TeV)为初级入射粒子能量,∑N_i为FT探... 详细信息

本文用monte Carlo方法研究西藏羊八井空气簇射阵列性能。确定好事例判选标准.簇射中心定位精度达3.4m.原初粒子到达方向角分辨率好于1.1°.原初粒子能量按lgE_0=lg(0.45∑N_i)±0.226确定,其中E_0(TeV)为初级入射粒子能量,∑N_i为FT探测器上探测到的粒子总数.

关键词：广延空气簇射蒙特卡罗法空气簇射

基于TKO－CAmAC的羊八井EAS阵列数据采集系统

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核电子学与探测技术 1994年第5期14卷 278-283,262页

作者： Amen.,m 白占武曹臻丁林垲冯振勇 K.Jibion N.Hotta 黄庆霍安祥贾焕玉江光佐焦善庆 F.Kajino K.Kasahara 拉巴次仁梅东明孟烈米玛次仁孟宪茹 K.mizitani 木钧 H.Nanjo m.Nishizawa 努桑 m.Ohnishi I.Ohta 任敬儒 T.Saito m.Sakata 施志政 m.shibata T.Shirai 孙欣新 H.Sugimoto K.Taira 潭有恒 N.Tateyama S.Torii 王辉王家祥温诚忠 Y.Yamaoto 余光策袁澎 T.YUDA 曾家刚赵春华张春生张慧敏张力张鸣扎桑扎西次仁周文德中国科学院高能物理研究所西南交通大学物理系云南大学物理系西藏大学物理系日本弘前大学日本宇都宫大学日本琦玉大学日本东京大学宇宙线研究所日本神奈川大学日本横滨国立大学日本相模工业大学日本甲南大学

本义介绍一个基于ＴＫＯ－ＣＡＭＡＣ数据采集系统，该系统采集坐落在西藏羊八井的广延空气簇射阵列数据，它是由ＴＫＯ－ＡＭＡＣ系列插件和ＰＣ－３８６微机组成。除此以外，它还包括一个激光标定检测系统及由原子钟和ＧＰＳ（全球定... 详细信息

本义介绍一个基于ＴＫＯ－ＣＡＭＡＣ数据采集系统，该系统采集坐落在西藏羊八井的广延空气簇射阵列数据，它是由ＴＫＯ－ＡＭＡＣ系列插件和ＰＣ－３８６微机组成。除此以外，它还包括一个激光标定检测系统及由原子钟和ＧＰＳ（全球定位系统）组成的定时系统。

关键词：广延空气簇射太电子伏数据采集系统

Frequency-dependent viscoelasticity effects on the wave attenuation performance of multi-layered periodic foundations

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Applied mathematics and mechanics(English Edition) 2024年第3期45卷 407-424页

作者： m.SAFI m.VAKILIFARD m.J.mAHmOODI Faculty of Civil Water&Environmental EngineeringShahid Beheshti UniversityTehran ***Iran Faculty of mechanical and Energy Engineering Shahid Beheshti UniversityTehran ***Iran

In this paper,layered periodic foundations(LPFs)are numerically examined for their responses to longitudinal and transverse modes in the time and frequency *** different unit-cells,i.e.,2-layer,4-layer,and 6-layer unit-cells,comprising concrete/rubber,concrete/rubber/steel/rubber,and concrete/rubber/steel/rubber/lead/rubber materials,respectively,are taken into ***,the viscoelasticity behavior of the rubber is modeled with two factors,i.e.,a frequency-independent(FI)loss factor and a linear frequency-dependent(FD)loss *** the extraction of the complex dispersion curves and the identification of the band gaps(BGs),the simulations of wave transmission in the time and frequency domains are performed using the COmSOL *** parametric studies evaluate the effects of the rubber viscoelasticity models on the dispersion curves and the wave transmission for the longitudinal and transverse *** results show that considering the rubber viscoelasticity enhances the wave attenuation ***,the transverse-mode damping is more sensitive to the viscoelasticity model than its longitudinal *** 6-layer unit-cell LPF exhibits the lowest BG,ranging from 4.8 Hz to 6.5 Hz.

关键词： layered metamaterial periodic foundation complex dispersion curve wave transmission diagram

Cosmic—Ray Deficit from the Directions of the moon and the Sun Detected with the Tibet Air Shower Array

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西藏大学学报(社会科学版) 1993年第4期8卷 76-85页

作者： m.Amenomori Z.Cao L.K.Ding Z.Y.Feng Hibino N.Hotta Q.Huang A.X.Huo H.Y.Jia G.z.Jiang S.Q.Jiao F.Kajino K.Kasahara Labaciren D.m.mei L.meng X.R.meng mimaciren K.mizutani J.mu H.Nanjo m.Nishizawa Nusang A.Oguro m.Ohnishi I.Ohta To.Saito m.Sakata Z.Z.shi m.shibata T.Shirai H.Sugimoto X.X.Sun A.Tai K.Taira Y.H.Tan N.Tateyama S.Torii H.Wang C.Z.Wen Y.Yamamoto X.Y.Yao G.C.Yu P.Yuan T.Yuda J.G.Zeng C.S.Zhang H.m.Zhang L.Zhang Zhasang Zhaxiciren W.D.Zhou Department of Physics Hirosaki UniversityHirosakiJapan Institute of High Energy Physics Academia SinicaBeijingChina Departmetn of Physics Sorth West Jiaotong UniversityChengduChina Institute for Cosmic Ray Research University of TokyoTanashiJapan Faculty of Education Utsunomiya UniversityUtsunomiyaJapan Department of Physics Konan UniversityKobeJapan Faculty of Engineering Kanagawa UniversityYokohanaJapan Department of mathematics and Physics Tibet UniversityLhasaChina Department of Physics saitama UniversityUrawaJapan Department of Physics Yunnan UniversityKunmingChina Faculty of Education Yokohama National UniversityYokohanaJapan Shonan Institute of Technology FujisawaJapan

Data from the Tibet air shower array were used to examine the cosmic ray shadows of the moon and the Sun at energies around *** shadowing effect was clearly observed at the 5.8level for the moon,while the shadow of the Sun was found in the direction away from the sun by 0.86°tothe west and 0.43°to the *** effect of the geomagnetic field has also been observed in the shadow of cosmic rays by the *** observed deflection of the sun’s shadow is briefly discussed in connection with the effect of the magnetic fields between the sun and the *** is the first observation of the effects of such magnetic fields on the cosmic ray *** maximum-likelihood analysis of the moon data set shows that the angular resolutions of the array for showers with its mode energies 7TeVand 35TeV are 0.87°-0.13°+0.10°and 0.54°-0.08°+0.11°,respectively.

关键词：空气簇射宇宙射线阴影磁场 Gamma射线