检索结果-南通市图书馆

The Giant Radio Array for Neutrino detection(GRAND):Science and design

Science China(Physics,Mechanics & Astronomy) 2020年第1期63卷 1-43页

作者： Jaime Alvarez-Muniz Rafael Alves Batista Aswathi Balagopal V. Julien Bolmont Mauricio Bustamante Washington Carvalho Jr. Didier Charrier Ismael Cognard Valentin decoene Peter B.denton Sijbrand de Jong Krijn D.de Vries Ralph Engel Ke Fang Chad Finley Stefano Gabici Quan Bu Gou Jun Hua Gu Claire Guépin Hong Bo Hu Yan Huang Kumiko Kotera Sandra Le Coz Jean-Philippe Lenain Guo Liang Léü olivier Martineau-Huynh Miguel Mostafá Fabrice Mottez Kohta Murase Valentin Niess Foteini oikonomou Tanguy Pierog Xiang Li Qian Bo Qin Duan Ran Nicolas Renault-Tinacci Markus Roth Frank G.Schroder Fabian Schüssler Cyril Tasse Charles Timmerman Matías Tueros Xiang Ping Wu Philippe Zarka Andreas Zech B.Theodore Zhang Jian Li Zhang Yi Zhang Qian Zheng Anne Zilles departamento de Fisica de Particulas&lnstituto Galego de Fisica de Altas Enerxias Universidad de Santiago de CompostelaSantiago de Compostela 15782Spain instituto de astronomia Geofisica e Ciencias AtmosfericasUniversidade de Sao PauloSao Paulo-SP 05508-090Brazil department of Physics-Astrophysics University of OxfordDWBOxford 0X13RHUK Institute of Experimental Particle Physics(ETP) Karlsruhe Institute of Technology(KIT)Karlsru he D-76021Germany Laboratoire de Physique Nucleeaire et de Hautes Energies(LPNHE) Sorbonne UniversiteUniversite Paris DiderotSorbonne Paris CiteCNRS place Jussieu F-75252Paris Cedex 5France Niels Bohr International Academy and DARK Niels Bohr InstituteCopenhagen 2100Denmark Discovery Center Niels Bohr InstituteCopenhagen 2100Denmark Center for Cosmology and AstroParticle Physics(CCA.PP)&department of Physics Ohio State UniversityColumbus OH 43210USA Universidade de Santiago de Compostela Santiago de Compostela 15782Spain 0SUBATECH Institut Mines-Telecom Atlantique-CNRS/IN2P3-Universite de NantesNantes 44300France Laboratoire de Physique et Chimie de KEnvironnement et de VEspace LPC2E CNRS-Universite d'orleans Orleans F-45071France Station de Radioastronomie de Nancay Observatoire de ParisCNRS/INSU F-18330 NangayFrance Sorbonne Universite UMR 7095Institut d'Astrophysique de Paris98 bis bd AragoParis 75014France Institute for Mathematics Astrophysics and Particle Physics(IMAPP)Radboud UniversiteitNijmegen 6500Netherlands Nationaal Instituut voor Kemfysica en Hoge Energie Fysica(NIKHEF) Amsterdam NL-1009Netherlands IIHE/ELEM Vrije Universiteit BrusselPleinlaan 2Brussels 1050Belgium Institute for Nuclear Physics(IKP) Karlsruhe Institute of Technology(KIT)Karlsruhe D-76021Germany Einstein Fellow Stanford UniversityStanford CA 94305USA department of Astronomy University of MarylandCollege Park MD 20742-2421USA Joint Space-Science Institute College Park MD 20742-2421USA oskar Klein Centre Stockholm UniversityStockholm SE-10691Sweden department of Phy

The Giant Radio Array for Neutrino detection(GRAND)is a planned large-scale observatory of ultra-high-energy(UHE)cosmic particles,with energies exceeding 10~8 Ge *** goal is to solve the long-standing mystery of the origin of UHE cosmic *** do this,GRAND will detect an unprecedented number of UHE cosmic rays and search for the undiscovered UHE neutrinos and gamma rays associated to them with unmatched *** will use large arrays of antennas to detect the radio emission coming from extensive air showers initiated by UHE particles in the *** design is modular:20 separate,independent sub-arrays,each of 10000 radio antennas deployed over 10000 km^2.A staged construction plan will validate key detection techniques while achieving important science goals *** we present the science goals,detection strategy,preliminary design,performance goals,and construction plans for GRAND.

关键词： radio telescopes neutrinos in astronomical observations cosmic rays in astronomical observations radiowave radiation:sources galactic and extragalactic cosmic rays:galactic and extragalactic

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Comnutational Models for New Fiber ootic Tweezers

引用

Photonic Sensors 2013年第1期3卷 57-60页

作者： R. S. RoDRIGUES RIBEIRo P. A. S. JoRGE A. GUERREIRo INESC-TEC (coordinated bv INESC Porto) Rua do Campo Alegre 687. 4169 007 Porto Portugal departamento de Fisica e astronomia Faculdade de Ci&ncias Universidade do Porto Portugal

This paper discusses the calculation of the trapping forces in optical tweezers using a combination of the finite differences time domain （FDTD） method and the Lorentz force on electric dipoles. The results of 2D si... 详细信息

关键词： optical tweezers optical fiber single cell FDTD electromagnetic force biosensors

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Inclusion of infrared dielectric screening in the GW method from polaron energies to charge mobilities

引用

npj Computational Materials 2022年第1期8卷 1300-1307页

作者： Paolo Umari Dipartimento di Fisica e astronomia Universitàdi Padovavia Marzolo 8I-35131PadovaItaly CNR-IoM Istituto officina dei Materiali Consiglio Nazionale Delle RicercheArea Science ParkStrada Statale 14km 163.5I-34149TriesteItaly

We introduce in the many-body GW scheme the modulation of the screened Coulomb interaction W arising from the macroscopic dielectric response in the *** derive expressions for the polaron binding energies,the renormalization of the effective masses and for the electron and hole relaxation *** and hole mobilities are then obtained from the incorporation of appropriate scattering ***-blende GaN and orthorhombic MAPbI3 are used as test beds finding fair agreement with results from rigorous electron-phonon coupling *** limited to polar phonons,our method has a negligible computational cost.

关键词： dielectric polaron negligible

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Fiber Cavity Ring Down and Gain Amplification Effect

引用

Photonic Sensors 2016年第4期6卷 324-327页

作者： Susana SILVA Regina MAGALHAES Rosa Ana PEREZ-HERRERA Manuel LoPEZ-AMo M. B. MARQUES o. FRAZAo IINESC TEC Rua do Campo Alegre 687 4169-007 Porto Portugal dept. de Fisica e astronomia da Faculdade de Ciencias da Universidade do Porto Rua do Campo Alegre 687 4169-007 Porto Portugal public University of Navarra Dept. of Electric and Electronic Engineering Campus de Arrosadla Pamplona Spain.

The effect of an erbium-doped fiber amplifier （EDFA） placed inside the fiber ring of a cavity ring down （CRD） configuration is studied. The limitations and advantages of this configuration are discussed, and the study of the ring-down time as a function of the current applied and gain to the EDFA is also presented. In this case, the power fluctuations in the output signal are strongly dependent on the cavity ring-down time with the EDFA gain.

关键词： Cavity ring down EDFA multimode laser optical fibers.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Confocal-based fluorescence fluctuation spectroscopy with a SPAD array detector

引用

Light(Science & Applications) 2021年第2期10卷 289-300页

作者： Eli Slenders Marco Castello Mauro Buttafava Federica Villa Alberto Tosi Luca Lanzanó Sami Valtteri Koho Giuseppe Vicidomini Molecular Microscopy and Spectroscopy Istituto Italiano di TecnologiaGenoaItaly Dipartimento di Eiettronica Informazione e BioingegneriaPolitecmco di MilanoMilanItaly Nanoscopy and NIC@IIT lstituto Italiano di TecnologiaGenoaItaly Dipartimento di Fisica e astronomia Universita di CataniaCataniaItaly

The combination of confocal laser-scanning microscopy(CLSM)and fluorescence fluctuation spectroscopy(FFS)is a powerful tool in studying fast,sub-resolution biomolecular processes in living cells.A detector array can further enhance CLSM-based FFS techniques,as it allows the simultaneous acquisition of several samples-essentially images-of the CLSM detection ***,the detector arrays that have previously been proposed for this purpose require tedious data corrections and preclude the combination of FFS with single-photon techniques,such as fluorescence lifetime ***,we solve these limitations by integrating a novel singie-photon-avalanche-diode(SPAD)array detector in a CLSM *** validate this new implementation on a series of FFS analyses:spot-variation fluorescence correlation spectroscopy,pair-correlation function analysis,and image-derived mean squared displacement *** predict that the unique combination of spatial and temporal information provided by our detector will make the proposed architecture the method of choice for CLSM-based FFS.

关键词： spectroscopy correction integrating

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Giant Radio Array for Neutrino detection(GRAND):Science and design

引用

Science China(Physics,Mechanics & Astronomy) 2020年第1期Mechanics & Astronomy) .卷 5-47页

作者： Jaime álvarez-Mu?iz Rafael Alves Batista Aswathi Balagopal V. Julien Bolmont Mauricio Bustamante Washington Carvalho Jr. Didier Charrier Isma?l Cognard Valentin decoene Peter B.denton Sijbrand de Jong Krijn D.de Vries Ralph Engel Ke Fang Chad Finley Stefano Gabici Quan Bu Gou Jun Hua Gu Claire Guépin Hong Bo Hu Yan Huang Kumiko Kotera Sandra Le Coz Jean-Philippe Lenain Guo Liang Léü olivier Martineau-Huynh Miguel Mostafá Fabrice Mottez Kohta Murase Valentin Niess Foteini oikonomou Tanguy Pierog Xiang Li Qian Bo Qin Duan Ran Nicolas Renault-Tinacci Markus Roth Frank G.Schr ?der Fabian Schüssler Cyril Tasse Charles Timmerman Matías Tueros Xiang Ping Wu Philippe Zarka Andreas Zech B.Theodore Zhang Jian Li Zhang Yi Zhang Qian Zheng Anne Zilles departamento de Física de Partículas & instituto Galego de Física de Altas Enerxías Universidad de Santiago de Compostela instituto de astronomia Geofísica e Ciências Atmosféricas Universidade de S?o Paulo department of Physics—Astrophysics University of Oxford DWB Institute of Experimental Particle Physics (ETP) Karlsruhe Institute of Technology (KIT) Laboratoire de Physique Nucléeaire et de Hautes Energies (LPNHE) Sorbonne Université Université Paris Diderot Sorbonne Paris Cité Niels Bohr International Academy and DARK Niels Bohr Institute Discovery Center Niels Bohr Institute Center for Cosmology and Astro Particle Physics (CCAPP) & department of Physics Ohio State University Universidade de Santiago de Compostela SUBATECH Institut Mines-Telecom Atlantique – CNRS/IN2P3 – Université de Nantes Laboratoire de Physique et Chimie de l’Environnement et de l’Espace LPC2E CNRS-Université d’orléans Station de Radioastronomie de Nan?cay Observatoire de Paris Sorbonne Université UMR 7095 Institut d’Astrophysique de Paris Institute for Mathematics Astrophysics and Particle Physics (IMAPP) Radboud Universiteit Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF) IIHE/ELEM Vrije Universiteit Brussel Institute for Nuclear Physics (IKP) Karlsruhe Institute of Technology (KIT) Einstein Fellow Stanford University department of Astronomy University of Maryland Joint Space-Science Institute oskar Klein Centre Stockholm University department of Physics Stockholm University Astro Particule et Cosmologie (APC) Université Paris Diderot CNRS/IN2P3 CEA/Irfu Observatoire de Paris Institute of High Energy Physics Chinese Academy of Sciences National Astronomical observatories Chinese Academy of Sciences School of Physical Science and Technology Xinjiang University Center for Particle and Gravitational Astrophysics Pennsylvania State University department of Physics Pennsylvania State University department of Astronomy & Astrophysics Pennsylvania State University LUTH Observatoire de Paris

The Giant Radio Array for Neutrino detection（GRAND） is a planned large-scale observatory of ultra-high-energy（UHE） cosmic particles, with energies exceeding 10～8 Ge V. Its goal is to solve the long-standing mystery of the origin of UHE cosmic rays. To do this, GRAND will detect an unprecedented number of UHE cosmic rays and search for the undiscovered UHE neutrinos and gamma rays associated to them with unmatched sensitivity. GRAND will use large arrays of antennas to detect the radio emission coming from extensive air showers initiated by UHE particles in the atmosphere. Its design is modular: 20 separate, independent sub-arrays, each of 10000 radio antennas deployed over 10000 km2. A staged construction plan will validate key detection techniques while achieving important science goals early. Here we present the science goals, detection strategy, preliminary design, performance goals, and construction plans for GRAND.

关键词： radio telescopes neutrinos in astronomical observations cosmic rays in astronomical observations radiowave radiation: sources galactic and extragalactic cosmic rays

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Pulsed Laser Annealed Ga Hyperdoped Poly-Si/Sio_(x)Passivating Contacts for High-Efficiency Monocrystalline Si Solar Cells

引用

Energy & Environmental Materials 2023年第3期6卷 388-399页

作者： Kejun Chen Enrico Napolitani Matteo de Tullio Chun-Sheng Jiang Harvey Guthrey Francesco Sgarbossa San Theingi William Nemeth Matthew Page Paul Stradins Sumit Agarwal David L.Young Colorado School of Mines 1500 Illinois StGolden Colorado 80401USA Dipartimento di Fisica e astronomia and CNR-IMM Universit`a degli Studi di Padovavia Marzolo 8PadovaItaly National Renewable Energy Laboratory 15013 Denver West ParkwayGolden Colorado 80401USA

Polycrystalline Si(poly-Si)-based passivating contacts are promising candidates for high-efficiency crystalline Si solar *** show that nanosecond-scale pulsed laser melting(PLM)is an industrially viable technique to fabricate such contacts with precisely controlled dopant concentration profiles that exceed the solid solubility *** demonstrate that conventionally doped,hole-selective poly-Si/Sio_(x)contacts that provide poor surface passivation of c-Si can be replaced with Ga-or B-doped contacts based on non-equilibrium *** overcome the solid solubility limit for both dopants in poly-Si by rapid cooling and recrystallization over a timescale of∼25 *** show an active Ga dopant concentration of∼3×10^(20)cm^(−3)in poly-Si which is six times higher than its solubility limit in c-Si,and a B dopant concentration as high as∼10^(21) cm^(−3).We measure an implied open-circuit voltage of 735 mV for Ga-doped poly-Si/Sio_(x)contacts on Czochralski Si with a low contact resistivity of 35.5±2.4 mΩcm^(2).Scanning spreading resistance microscopy and Kelvin probe force microscopy show large diffusion and drift current in the p-n junction that contributes to the low contact *** results suggest that PLM can be extended for hyperdoping of other semiconductors with low solubility atoms to enable high-efficiency devices.

关键词： Ga hyperdoping Ga passivating contacts poly-Si/Sio_(x) pulsed laser melting silicon solar cell

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

From individual elements to macroscopic materials: in search of new superconductors via machine learning

引用

npj Computational Materials 2023年第1期9卷 1640-1648页

作者： Claudio Pereti Kevin Bernot Thierry Guizouarn František Laufek Anna Vymazalová Luca Bindi Roberta Sessoli Duccio Fanelli Dipartimento di Fisica e astronomia Universitàdi FirenzeINFN and CSDCVia Sansone 150019 Sesto FiorentinoFirenzeItaly Univ.Rennes Universitéde Rennes 1INSA RennesCNRSISCR(Institut des Sciences Chimiques de Rennes)UMR 6226F-35000 RennesFrance Institut Universitaire de France 1 rue DescartesParisFrance Czech Geological Survey Geologická615200 Praha 5Czech Republic Dipartimento di Science della Terra Universitàdi FirenzeVia G.La Pira450121 FirenzeItaly Dipartimento di Chimica U.Schiff-DICUS and INSTM Research Unit Universitàdi FirenzeVia della Lastruccia 3-13Sesto Fiorentino 50019 FirenzeItaly

An approach to supervised classification and regression of superconductive materials is proposed which builds on the deepSet *** enables us to provide the chemical constituents of the examined compounds as an input to the algorithm,while avoiding artefacts that could originate from the chosen ordering in the *** performance of the method are successfully challenged for both classification(tag a given material as superconducting)and regression(quantifying the associated critical temperature).We then searched through the International Mineralogical Association list with the trained neural *** the obtained superconducting candidates,three materials were selected to undergo a thorough experimental *** has been indeed confirmed for the synthetic analogue of michenerite,PdBiTe,and observed for the first time in monchetundraite,Pd2NiTe2,at critical temperatures in good agreement with the theory *** latter is the first certified superconducting material to be identified by artificial intelligence methodologies.

关键词： artificial deep neural

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Experimental and Theoretical Analysis of an optical Current Sensor for High Power Systems

引用

Photonic Sensors 2013年第1期3卷 26-34页

作者： A. C. S. BRIGIDA I. M. NASCIMENTo S. MENDoNCA J. C. W. A. CoSTA M. A. G. MARTINEZ, J. M. BAPTISTA,P. A. S. JoRGE J. C. W. A. CoSTA, M. A. G. MARTINEZ, J. M. BAPTISTA J. M. BAPTISTA P.A.S. JoRGE INESC-TEC (coordinated by INESC Porto) Rua do Campo Alegre 687. 4169 007 Porto Portugal Universidade Federal do Pará Belm Av. Augusto Correa 01 - Guamd-66075-110 Belém PA Brazil Universidade do Porto Faculdade de Ciēncias Departamento de Fisica e Astronomia Rua do Campo Alegre 687 4169-007 Porto Portugal Centro Federal de Educagāo Tecnológica Celso Suckow da Fonseca Rio de Janeiro Brazil Centro de Competéncias de Ciēncias Exactas e de Engenharia Universidade da Madeira Funchal Portugal

A magneto-optical sensor, using a dual quadrature polarimetfic processing scheme, was evaluated for current metering and protection applications in high voltage lines. Sensor calibration and resolution were obtained in different operational conditions using illumination in the 1550-nm band. Results obtained indicated the feasibility of interrogating such sensor via the optical ground wire （oPGW） link installed in standard high power grids. The polarimetric bulk optical current sensor also was theoretically studied, and the effects of different sources of error considering practical deployment were evaluated. In particular, the interference from external magnetic fields in a tree-phase system was analyzed.

关键词： Fiber optic optical current sensor linear birefringence Faraday effect tree-phase system

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Inner jet kinematics and the viewing angle towards the γ-ray narrow-line Seyfert 1 galaxy 1H 0323＋342

引用

Research in Astronomy and Astrophysics 2016年第11期16卷 87-98页

作者： Lars Fuhrmann Vassilis Karamanavis Stefanie Komossa Emmanouil Angelakis Thomas E Krichbaum Robert Schulz Annika Kreikenbohm Matthias Kadler Ioannis Myserlis Eduardo Ros Ioannis Nestoras J. Anton Zensus Max-Planck-Institut fur Radioastronomie Auf dem Htigel 69 D-53121 Bonn Germany Le-hrstuhl ftir Astronomie Universitat Wtirzburg Campus Hubland Nord Emil-Fischer-StralBe 31 D-97074 Wtirzburg Germany Dr. Karl Remeis-Sternwarte & Erlangen Centre for Astroparticle Physics Sternwartstr. 7 D-96049 Bamberg Germany observatori Astronbmic Universitat de Valencia C/Catedraitico Jose Beltran 2 46980 Paterna Valencia Spain departament d'astronomia i Astroffsica Universitat de Valencia C/Dr. Moliner 50 46100 Burjassot Valencia Spain

Near-Eddington accretion rates onto low-mass black holes are thought to be a prime driver of the multi-wavelength properties of the narrow-line Seyfert 1 （NLS1） population of active galactic nuclei （AGNs）. orientation effects have repeatedly been considered as another important factor involved, but detailed studies have been hampered by the lack of measured viewing angles towards this type of AGN. Here we present multi-epoch, 15 GHz VLBA images （MoJAVE program） of the radio-loud and Fermi/LAT- detected NLS 1 galaxy 1H 0323＋342. These are combined with single-dish, multi-frequency radio monitoring of the source＇s variability, obtained with the Effelsberg 100-m and IRAM 30-m telescopes, in the course of the F-GAMMA program. The VLBA images reveal six components with apparent speeds of 1 - 7 c, and one quasi-stationary feature. Combining the obtained apparent jet speed （βapp） and variability Doppler factor （Dvar） estimates together with other methods, we constrain the viewing angle 0 towards 1H 0323＋342 to 0 ≤ 4°-13°. Using literature values of βapp and Dvar, we also deduce a viewing angle of 〈8°-9° towards another radio- and γ-ray-loud NLS1, namely SBS 0846＋513.

关键词： galaxies: active -- galaxies: jets -- galaxies: individual: 1H 0323+342 -- -) -rays: galaxies

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：