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Energy of a solid sphere under nonstationary oscillations

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Science China(Physics,Mechanics & Astronomy) 2014年第3期57卷 469-476页

作者： petrov yu. SMIRNOv v. UTKIN A. bratov v. St.-Petersburg State University Institute of Problems of Mechanical Engineering Russian Academy of Sciences St.-Petersburg State Transport University

Analytical solution for spherically symmetric nonstationary oscillations of acoustic and elastic solid sphere is *** dependence of potential,kinetic and internal energy of a solid sphere is *** received results are of practical importance for a wide range of problems connected to testing of material dynamic strength parameters and to the problems of optimizing(minimizing)energy needed for fracture of solids.

关键词： nonstationary oscillations analytical solution material dynamics dynamic elastisity kinetic energy potential energy internal energy energy exchange

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固体材料脆性断裂的多尺度时空模型(英文)

宁波大学学报（理工版） 2012年第1期25卷 35-40页

作者： petrov y v.bratov v 圣彼得堡国立大学俄罗斯圣彼得堡198504 俄罗斯科学院机械工程研究所俄罗斯圣彼得堡199178

通过实例分析了动态断裂过程所固有的典型动态作用,基于断裂孵化时间理论的时空结构方法提出了固体材料断裂的统一解释.此外,还提出了计及尺度效应的广义断裂模型,该模型可以用于预测准脆性非均质材料的多尺度断裂,并证明此模型基于实... 详细信息

通过实例分析了动态断裂过程所固有的典型动态作用,基于断裂孵化时间理论的时空结构方法提出了固体材料断裂的统一解释.此外,还提出了计及尺度效应的广义断裂模型,该模型可以用于预测准脆性非均质材料的多尺度断裂,并证明此模型基于实验室尺度的实验数据可以预测更高尺度(真实尺度)的宏观断裂.

关键词：孵化时间准则动态断裂动态强度断裂韧性时空离散化多尺度裂纹扩展管道有限元建模

First results of turbulence investigation on Globus-M2 using radial correlation Doppler reflectometry

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Plasma Science and Technology 2024年第10期26卷 49-55页

作者： A.PONOMARENKO A.yASHIN v.GUSEv E.KISELEv G.KURSKIEv v.MINAEv y.petrov N.SAKHAROv P.SHCHEGOLEv E.TKACHENKO N.ZHILTSOv Peter the Great St.Petersburg Polytechnic University St.Petersburg 195251Russia Ioffe Institute St.Petersburg 194064Russia

The first results of investigation of the turbulence structure using Doppler backscattering(DBS)on the Globus-M2 tokamak are presented.A one-channel DBS system with a variable probing frequency within the 18–26 GHz range was installed to investigate the edge plasma at normalized minor radiiρ=0.9–*** correlation Doppler reflectometry was used to study the changes in turbulence eddies after the LH *** analysis was applied to the phase derivative of complex in-phase and quadrature(IQ)signals of the DBS diagnostic as it contains information about the poloidal plasma rotation *** L-mode,the radial correlation length L_(r)is estimated to be 3 cm and after transition to H-mode reduces to approximately 2 *** modelling in a linear local approximation using code GENE indicates that the instability with positive growth rate at the normalized minor radiusρ=0.75 in L-mode and H-mode on Globus-M2 was the ion temperature gradient(ITG)mode.

关键词： tokamak turbulence Doppler backscattering correlation reflectometry

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各种生产过程最优节能参数的存在性(英文)

宁波大学学报（理工版） 2012年第1期25卷 48-52页

作者： bratov v petrov y v vOLKOv G 圣彼得堡国立大学俄罗斯圣彼得堡198504 俄罗斯科学院力学研究所俄罗斯圣彼得堡198504

研究表明,在诸多生产过程中可以优化输入的断裂能量,使加工能耗最小.以一个简单的中心断裂为例,当加截脉冲具有某种特定形态时,施加到样品上引发破裂的能量可以取一个显著的最小值.研究结果显示,优化各种与断裂有关的生产过程,使得能量... 详细信息

研究表明,在诸多生产过程中可以优化输入的断裂能量,使加工能耗最小.以一个简单的中心断裂为例,当加截脉冲具有某种特定形态时,施加到样品上引发破裂的能量可以取一个显著的最小值.研究结果显示,优化各种与断裂有关的生产过程,使得能量消耗最小是可能的.这种优化的可能应用包括钻孔或岩石粉碎过程,此时能耗成本通常占生产成本的最大部分.上述方法可以预测钻孔或研磨机等的最优参数,从而大大降低生产成本.文章第二部分研究了接触作用条件下引发断裂的能量输入行为.考虑一个球型粒子冲击一个半空间靶的情形,接触导致的应力场可用赫兹解来估计.定义了断裂判据之后,即可确定引发断裂的球粒临界速度及相应的临界动能.该动能的大小依赖于加载的持续时间,并十分明显地存在一个最小值.据此可断定,存在一个动态冲击的能量最优模式.

关键词：节能最优工作模式孕育时间脆性断裂岩石

用于儿童斜视矫正的压贴三棱镜设计与制作(英文)

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光子学报 2017年第11期46卷 12-19页

作者：付明磊胡炜杰乐孜纯 Manko D.y. Antonov E.E. Kryuchyn A.A. petrov v.v. 浙江工业大学理学院杭州310023 乌克兰国家科学院信息记录研究所乌克兰基辅03113

为了填补我国学术界和产业界在压贴三棱镜的国产化设计、制作以及测试等方面工作的空白,研究了压贴三棱镜镜片结构设计理论,并推导了压贴三棱镜镜片透过率以及畸变的计算公式,数值模拟了不同材料、不同棱镜度数的压贴三棱镜的透过率以... 详细信息

为了填补我国学术界和产业界在压贴三棱镜的国产化设计、制作以及测试等方面工作的空白,研究了压贴三棱镜镜片结构设计理论,并推导了压贴三棱镜镜片透过率以及畸变的计算公式,数值模拟了不同材料、不同棱镜度数的压贴三棱镜的透过率以及压贴三棱镜的畸变情况.数值模拟结果表明:与现有PvC材料相比,PMMA材料具有更大的阿贝系数和更小的材料吸收率,是一种制作低成本压贴三棱镜的理想材料.利用金刚石切割工艺制作出精密的压贴三棱镜模版,模版的表面光洁度达到14级,并采用热压工艺,在温度为180℃压力为130kg/cm2的工艺参数下制作出不同棱镜度数的压贴三棱镜样片,验证了以PMMA材料为基材、采用热压工艺制作压贴三棱镜的可行性.为了测试压贴三棱镜样片的实际棱镜度(Δ),自主设计并搭建了压贴三棱镜棱镜度测量系统.实验结果表明:对低(10Δ)、中(20Δ)、高(30Δ)三组压贴三棱镜样片的棱镜度测试结果与理论值的偏差分别为0.01Δ、0.04Δ和0.02Δ.所有样品的棱镜度偏差均符合国家医用棱镜的标准.因此,所制作的压贴三棱镜样片具有较高的光线偏折精度,为治疗儿童斜视疾病提供了一种高质量、低成本的产品方案.

关键词：菲涅尔棱镜贴压三棱镜斜视透过率棱镜度

All Season Observations of Meromictic Regime at Lake Doroninskoye

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Acta Geologica Sinica(English Edition) 2014年第S1期88卷 20-22页

作者： P.y.LUKyANOv O.I.petrov A.A.GURULEv A.O.ORLOv S.D.KRyLOv K.A.SHEGRINA S.v.TSyRENZHAPOv Institute of Natural Resources Ecology and Cryology SB RAS

1 Introduction Soda Lake Doroninskoye(Uleoti District of Transbaikalian Region,Russia)belongs to a rare type of meromictic *** meromictic basins,the vertical stratification in the form of sufficiently thin water layers with significantly differing physical and chemical properties is typical,as well as peculiar *** main characteristics of the lake Doroninskoye are:

关键词： In Lake All Season Observations of Meromictic Regime at Lake Doroninskoye

Passively Q-switched femtosecond-laser-written thulium waveguide laser based on evanescent field interaction with carbon nanotubes

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Photonics Research 2018年第10期6卷 971-980页

作者： ESROM KIFLE PAvEL LOIKO JAvIER RODRíGUEZ váZQUEZ DE ALDANA CAROLINA ROMERO AIRáN RóDENAS SUN yUNG CHOI JI EUN BAE FABIAN ROTERMUND vIKTOR ZAKHAROv ANDREy vENIAMINOv MAGDALENA AGUILó FRANCESC DíAZ UWE GRIEBNER vALENTIN petrov XAvIER MATEOS Universitat Rovira i virgili Departament Quimica Fisica i Inorgànica Fisica i Cristal·lografia de Materials i Nanomaterials (FiCMA-FiCNA)-EMaS Campus Sescelades E-43007 Tarragona Spain ITMO University 49 Kronverkskiy pr. 197101 St. Petersburg Russia Aplicaciones del Láser y Fotónica University of Salamanca 37008 Salamanca Spain Istituto di Fotonica e Nanotecnologie Consiglio Nazionale delle Ricerche (IFN-CNR) Piazza Leonardo da Vinci 32 20133 Milano Italy Department of Physics KAIST 291 Daehak-ro Yuseong-gu 34141 Daejeon South Korea Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy Max-Bom-Str. 2a D-12489 Berlin Germany

Surface channel waveguides(WGs) were fabricated in a monoclinic Tm^(3+):KLu(WO_4)_2 crystal by femtosecond direct laser writing(fs-DLW). The WGs consisted of a half-ring cladding with diameters of 50 and 60 μm located just beneath the crystal surface. They were characterized by confocal laser microscopy and μ-Raman spectroscopy,indicating a reduced crystallinity and stress-induced birefringence of the WG cladding. In continuous-wave(CW)mode, under Ti:sapphire laser pumping at 802 nm, the maximum output power reached 171.1 mW at 1847.4 nm,corresponding to a slope efficiency η of 37.8% for the 60 μm diameter WG. The WG propagation loss was0.7 0.3 d B∕cm. The top surface of the WGs was spin-coated by a polymethyl methacrylate film containing randomly oriented(spaghetti-like) arc-discharge single-walled carbon nanotubes serving as a saturable absorber based on evanescent field coupling. Stable passively Q-switched(PQS) operation was achieved. The PQS60 μm diameter WG laser generated a record output power of 150 m W at 1846.8 nm with η = 34.6%. The conversion efficiency with respect to the CW mode was 87.6%. The best pulse characteristics(energy/duration)were 105.6 nJ/98 ns at a repetition rate of 1.42 MHz.

关键词：激光技术波导技术发展现状通讯技术

Future Physics Programme of BESⅢ

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Chinese Physics C 2020年第4期44卷 I0001-I0004,1-102页

作者： M.Ablikim M.N.Achasov P.Adlarson S.Ahmed M.Albrecht M.Alekseev A.Amoroso F.F.An Q.An y.Bai O.Bakina R.Baldini Ferroli y.Ban K.Begzsuren J.v.Bennett N.Berger M.Bertani D.Bettoni F.Bianchi J Biernat J.Bloms I.Boyko R.A.Briere L.Calibbi H.Cai X.Cai A.Calcaterra G.F.Cao N.Cao S.A.Cetin J.Chai J.F.Chang W.L.Chang J.Charles G.Chelkov Chen G.Chen H.S.Chen J.C.Chen M.L.Chen S.J.Chen y.B.Chen H.y.Cheng W.Cheng G.Cibinetto F.Cossio X.F.Cui H.L.Dai J.P.Dai X.C.Dai A.Dbeyssi D.Dedovich Z.y.Deng A.Denig Denysenko M.Destefanis S.Descotes-Genon F.De Mori y.Ding C.Dong J.Dong L.y.Dong M.y.Dong Z.L.Dou S.X.Du S.I.Eidelman J.Z.Fan J.Fang S.S.Fang y.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng M.Fritsch C.D.Fu y.Fu Q.Gao X.L.Gao y.Gao y.Gao y.G.Gao Z.Gao B.Garillon I.Garzia E.M.Gersabeck A.Gilman K.Goetzen L.Gong W.X.Gong W.Gradl M.Greco L.M.Gu M.H.Gu y.T.Gu A.Q.Guo F.K.Guo L.B.Guo R.P.Guo y.P.Guo A.Guskov S.Han X.Q.Hao F.A.Harris K.L.He F.H.Heinsius T.Held y.K.Heng y.R.Hou Z.L.Hou H.M.Hu J.F.Hu T.Hu y.Hu G.S.Huang J.S.Huang X.T.Huang X.Z.Huang Z.L.Huang N.Huesken T.Hussain W.Ikegami Andersson W.Imoehl M.Irshad Q.Ji Q.P.Ji X.B.Ji X.L.Ji H.L.Jiang X.S.Jiang X.y.Jiang J.B.Jiao Z.Jiao D.P.Jin S.Jin y.Jin T.Johansson N.Kalantar-Nayestanaki X.S.Kang R.Kappert M.Kavatsyuk B.C.Ke I.K.Keshk T.Khan A.Khoukaz P.Kiese R.Kiuchi R.Kliemt L.Koch O.B.Kolcu B.Kopf M.Kuemmel M.Kuessner A.Kupsc M.Kurth M.G.Kurth W.Kuhn J.S.Lange P.Larin L.Lavezzi H.Leithoff T.Lenz C.Li Cheng Li D.M.Li F.Li F.y.Li G.Li H.B.Li H.J.Li J.C.Li J.W.Li Ke Li L.K.Li Lei Li P.L.Li P.R.Li Q.y.Li W.D.Li W.G.Li X.H.Li X.L.Li X.N.Li X.Q.Li Z.B.Li H.Liang H.Liang y.F.Liang y.T.Liang G.R.Liao L.Z.Liao J.Libby C.X.Lin D.X.Lin y.J.Lin B.Liu B.J.Liu C.X.Liu D.Liu D.y.Liu F.H.Liu Fang Liu Feng Liu H.B.Liu H.M.Liu Huanhuan Liu Huihui Liu J.B.Liu J.y.Liu K.y.Liu Ke Liu Q.Liu S.B.Liu T.Liu X.Liu X.y.Liu y.B.Liu Z.A.Liu Zhiqing Liu y.F.Long X.C.Lou H.J.Lu J.D.Lu J.G.Lu y.Lu y.P.Lu C.L.Luo M.X.Luo P.W.Luo T.Luo X.L.Luo S.Lusso X.R.Lyu F.C.Ma H.L.Ma L.L.Ma M.M.Ma Q.M.Ma X.N.Ma X.X. Institute of High Energy Physics Beijing 100049China Beihang University Beijing 100191China Beijing Institute of Petrochemical Technology Beijing 102617China Bochum Ruhr-University D-44780 BochumGermany Carnegie Mellon University PittsburghPennsylvania 15213USA Central China Normal University Wuhan 430079China China Center of Advanced Science and Technology Beijing 100190China COMSATS University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200443China G.I.Budker Institute of Nuclear Physics SB RAS(BINP) Novosibirsk 630090Russia GSI Helmholtzcentre for Heavy Ion Research GmbH D-64291 DarmstadtGermany Guangxi Normal University Guilin 541004China Guangxi University Nanning 530004China Hangzhou Normal University Hangzhou 310036China Helmholtz Institute Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University of Science and Technology Luoyang 471003China Huangshan College Huangshan 245000China Hunan Normal University Changsha 410081China Hunan University Changsha 410082China Indian Institute of Technology Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INFN Laboratori Nazionali di Frascati I-00044FrascatiItaly INFN Sezione di Ferrara I-44122FerraraItaly Institute of Physics and Technology Peace Ave.54BUlaanbaatar 13330Mongolia Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Joint Institute for Nuclear Research 141980 DubnaMoscow regionRussia Justus-Liebig-Universitaet Giessen II.Physikalisches InstitutHeinrich-Buff-Ring 16D-35392 GiessenGermany KvI-CART University of GroningenNL-9747 AA GroningenThe Netherlands Lanzhou University Lanzhou 730000China Liaoning University Shenyang 110036China Nanjing Normal University Nanjing 210023China Nanjing University Nanjing 210093China Nankai University Tianjin 300071China Peking University Beijing 100871China Shandong University Jinan 250100China Shanghai

There has recently been a dramatic renewal of interest in hadron spectroscopy and charm physics. This renaissance has been driven in part by the discovery of a plethora of charmonium-like XyZ states at BESⅢ and B factories, and the observation of an intriguing proton-antiproton threshold enhancement and the possibly related X(1835) meson state at BESⅢ, as well as the threshold measurements of charm mesons and charm baryons. We present a detailed survey of the important topics in tau-charm physics and hadron physics that can be further explored at BESⅢ during the remaining operation period of BEPCⅡ. This survey will help in the optimization of the data-taking plan over the coming years, and provides physics motivation for the possible upgrade of BEPCⅡ to higher luminosity.

关键词： meson hadron optimization

每核子14.6和60Gev能量下氧离子诱发核反应的带电粒子谱

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高能物理与核物理 1989年第10期13卷 865-869页

作者： M.I.Adamovich M.M.A■■arwal R.Arora y.A.Alexandrov S.A.Azimov S.K.Badyal E.Basova K.B.Bhalla A.Bhasin v.S.Badyal R.A.Bomadarenko T.H.Burnett 蔡(冒力) L.P.Chernova M.M.Chernyavski B.Dressel E.M.Friedlander S.I.Gerassimov E.R.Ganssau■e S.Garpman S.G.Gerassimov A.Gill J.Grote K.G.Gulamov v.G.Gulyamov v.K.Gupta S.Hackel H.H.Heckman B.Jakobsson B.Judek S.Katroo F.G.Kadyrov H.Kallies L.Karlsson G.L.Kaul M.Kaur S.P.Kharlamov J.Kohli v.Kumar P.Lal v.G.Larinova P.J.Lindstrom 刘连寿 S.Lokanathan J.Lord N.S.Lukicheva L.K.Man■otra N.v.Maslennikova I.S.Mitta E.Monnand S.Moolerjee C.Mueller S.H.Nasyrov v.S.Nvtny G.I.Orlova I.Otterlund N.G.Peresadko S.Persson N.v.petrov 钱琬燕 R.Raniwala S.Raniwana N.K.Rao J.y.Rhee N.Shaidkhanov N.G.Salmanova W.Schulz F.Schussler v.S.Shukla D.Skeldin■ K.Soderstrom E.Stanlund R.S.Storey 孙君芬 L.N.Svechnilova M.I.Tretyakova T.P.Trofimova 王海桥翁智群 R.J.Wilkes 许国发张东海郑蒲英周代翠周景晨列比切夫研究所旁加贝大学物理技术研究所查漠大学拉加斯坦大学核物印研究所华盛顿大学华中师范大学菲利浦斯大学劳伦斯-伯克利实验室隆德大学国家研究委员会原子能研究中心 )列比切夫研究所山西师范大学高能物理研究所

本文给出了每核子14.6和60Gev能量下氧离子诱发核反应的带电粒子多重数分布和赝快度分布.实验数据取自EMU-01乳胶叠,并与Lund Monte Carlo模型(FRITIOF)作了比较.

关键词：氧离子诱发核反应带电粒子谱