检索结果-南通市图书馆

Possible strange hidden-charm pentaquarks from Σ_c^((*))_s~* and Ξ_c^((',*))~* interactions

在线全文

学校读者我要写书评

暂无评论

Chinese physics C 2017年第10期41卷 49-58页

作者：陈锐何军刘翔 School of Physical Science and Technology Lanzhou University Research center for Hadron and CSR physics Lanzhou University and Institute of Modern Physics of CAS Department of physics Nanjing Normal University Nuclear Theory Group Institute of Modern PhysicsChinese Academy of Sciences

Using the one-boson-exchange model, we investigate the Λcs^＊, Σcs^＊, Σc^＊s^＊, Ξc^＊, Ξ＇c^＊, and Ξc^＊^＊ interactions by considering the one-eta-exchange and/or one-pion-exchange contributions. We further predict the existence of hidden-charm molecular pentaquarks. Promising candidates for hidden-charm molecular pentaquarks include a Ξ＇cD^＊ state with 0（（1/2）^-） and the Ξc^＊D^＊ states with 0（1/2^-） and 0（3/2^-）. Experimental searches for these predicted hidden-charm molecular pentaquarks are an interesting future research topic for experiments like LHCb.

关键词： hidden-charm pentaquark one-boson-exchange model molecular state

Two-Dimensional Nonlinear Laser Spectra Calculations with Numerical Path Integral

在线全文

学校读者我要写书评

暂无评论

Chinese physics Letters 2012年第8期29卷 122-126页

作者： LIANG Xian-Ting Department of physics and Institute of modern physics Ningbo UniversityNingbo 315211

Two-dimensional three-order nonlinear response functions and the laser spectra of the two-level Frenkel-exciton model,interacting with three short laser pulses in direction-k_(1)+k_(2)+k_(3),are calculated using the numerical path *** method is non-Markovian and the results show that the numerical simulation scheme provides a new pathway for theoretically investigating the multidimensional ultrafast laser spectra including the non-Markovian effects.

关键词： laser Frenkel Nonlinear

Prototype studies on the forward MWDC tracking array of the external target experiment at HIRFL-CSR

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

Chinese physics C 2014年第12期38卷 39-43页

作者：易晗张钊肖志刚程文静吕黎明闫威华王仁生李红洁黄彦张嫣段利敏胡荣江鲁辰桂杨贺润马朋 Department of physics Tsinghua University Collaborative Innovation center of Quantum Matter Institute of modern physics Chinese Academy of Sciences

A prototype of the forward tracking array consisting of three multiwire drift chambers（MWDC） for the external target experiment（CEE） at the Heavy Ion Research Facility at the Lanzhou-Cooling Storage Ring（HIRFL-CSR） has been assembled and tested using cosmic rays. The signals from the anode wires are amplified and fed to a Flash-ADC to deliver the drift time and charge integration. The performances of the array prototype are investigated under various high voltages. For the tracking performances, after the space-time relation（STR）calibration and the detector displacement correction, the standard deviation of 223 μm of the residue is *** performances of the forward MWDCs tracking array meets the requirements of CEE in design.

关键词： external target experiment multiwire drift chamber flash-ADC tracking

Second Reference State and Complete Eigenstates of Open XYZ Chain

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical physics 2011年第7期56卷 55-60页

作者：冯俊陈曦郝昆侯伯宇石康杰孙成一杨文力 Institute of modern physics Northwest University

The second reference state of the open XYZ spin chain with non-diagonal boundary terms is studied. The associated Bethe states exactly yield the second set of eigenvalues proposed recently by functional Bethe Ansatz.

关键词： algebraic Bethe ansatz XYZ spin chain

Charge-sensitive deep level transient spectroscopy of helium-ion-irradiated silicon,as-irradiated and after thermal annealing

在线全文

学校读者我要写书评

暂无评论

Chinese physics B 2009年第1期18卷 246-250页

作者：李炳生张崇宏杨义涛周丽宏张洪华 Institute of modern physics Chinese Academy of Sciences

Electrically active defects in the phosphor-doped single-crystal silicon, induced by helium-ion irradiation under thermal annealing, have been investigated. Isothermal charge-sensitive deep-level transient spectroscopy was employed to study the activation energy and capture cross-section of helium-induced defects in silicon samples. It was shown that the activation energy levels produced by helium-ion irradiation first increased with increasing annealing temperature, with the maximum value of the activation energy occurring at 873 K, and reduced with further increase of the annealing temperature. The energy levels of defects in the samples annealed at 873 and 1073 K are found to be located near the mid-forbidden energy gap level so that they can act as thermally stable carrier recombination centres.

关键词： helium-ion irradiation defect activation energy charge-sensitive deep level transient spectroscopy

Analysis of the axial fitting clearance between the fuel rod and the end seat in CIADS

在线全文

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2016年第6期27卷 161-165页

作者： Ya-Feng Shu Yong-Wei Yang Xin Sheng Kang Chen De-Liang Fan Lu Zhang Institute of modern physics Chinese Academy of Sciences

The fuel assembly is key structure in China Initiative Accelerator Driven System,and the axial fitting clearance(AFC) for the fuel assembly design is an essential subject of *** this paper,different methods are used to calculate critical stress in cylindrical *** the thermal expansion of fuel assembly outer tube is larger than that of the cladding of fuel rod,enough space should be reserved between the upper end plug and upper seat *** collapse critical compressive stress of the cladding is obtained numerically through ANSYS simulation *** AFC range between the fuel rod cladding and the end seat due to the displacement of thermal expansion is given by the theoretical formulas and ANSYS buckling *** provide a reference for the AFC design of the reactor fuel assembly.

关键词：燃料棒装配间隙轴向加速器驱动系统 ANSYS 燃料组件模拟计算临界应力

Quantum Fisher Information for Density Matrices with Arbitrary Ranks

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical physics 2014年第1期61卷 45-50页

作者：刘京井晓辛钟伟王晓光 Zhejiang Institute of modern physics Department of PhysicsZhejiang University

We provide a new expression of the quantum Fisher information(QFI) for a general *** this expression,the QFI for a non-full rank density matrix is only determined by its *** expression can bring convenience for an inf... 详细信息

关键词： quantum Fisher information quantum metrology density matrix

Excitation of High-Frequency Internal Kink Mode by Deeply-Trapped Energetic Ions

在线全文

学校读者我要写书评

暂无评论

Plasma Science and Technology 2010年第4期12卷 397-400页

作者：李闻王少杰 Department of physics Fudan University Department of modern physics University of Science and Technology of China center for Magnetic Fusion Theory Chinese Academy of Science

Deeply trapped energetic ions can destabilize the internal kink mode with both high and low frequencies with a potato-orbit limit in the EAST-like tokamaks. The threshold beta value of the deeply trapped energetic ion... 详细信息

关键词： macroscopic instability tokamak internal kink energetic ions

Quantum Fisher Information of Entangled Coherent States in a Lossy Mach–Zehnder Interferometer

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical physics 2014年第1期61卷 115-120页

作者：井晓幸刘京钟伟王晓光 Zhejiang Institute of modern physics Department of PhysicsZhejiang University

We give an analytical result for the quantum Fisher information of entangled coherent states in a lossy Mach–Zehnder interferometer recently proposed by Joo et al.,[***.107(2011)083601].For small loss of photons,we find that the entangled coherent state can surpass the Heisenberg ***,the formalism developed here is applicable to the study of phase sensitivity of multipartite entangled coherent states.

关键词： quantum Fisher information entangled coherent state Mach–Zehnder interferometer photon loss