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PHYSICS (543 journals)                  1 2 3 4 5 6 | Last

Acta Acustica united with Acustica     Full-text available via subscription   (Followers: 7)
Acta Mechanica     Hybrid Journal   (Followers: 15)
Advanced Composite Materials     Hybrid Journal   (Followers: 15)
Advanced Functional Materials     Hybrid Journal   (Followers: 36)
Advanced Materials     Hybrid Journal   (Followers: 368)
Advances in Condensed Matter Physics     Open Access   (Followers: 6)
Advances in Exploration Geophysics     Full-text available via subscription   (Followers: 3)
Advances in Geophysics     Full-text available via subscription   (Followers: 4)
Advances in High Energy Physics     Open Access   (Followers: 11)
Advances in Imaging and Electron Physics     Full-text available via subscription   (Followers: 1)
Advances in Materials Physics and Chemistry     Open Access   (Followers: 15)
Advances in Natural Sciences: Nanoscience and Nanotechnology     Open Access   (Followers: 14)
Advances in OptoElectronics     Open Access   (Followers: 3)
Advances In Physics     Hybrid Journal   (Followers: 7)
Advances in Physics Theories and Applications     Open Access   (Followers: 4)
Advances in Remote Sensing     Open Access   (Followers: 8)
Advances in Synchrotron Radiation     Hybrid Journal   (Followers: 1)
AIP Advances     Open Access   (Followers: 4)
AIP Conference Proceedings     Full-text available via subscription   (Followers: 1)
American Journal of Applied Sciences     Open Access   (Followers: 29)
American Journal of Condensed Matter Physics     Open Access   (Followers: 2)
American Journal of Signal Processing     Open Access   (Followers: 7)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 1)
Annalen der Physik     Hybrid Journal   (Followers: 2)
Annales Geophysicae (ANGEO)     Open Access   (Followers: 3)
Annales Henri PoincarĂ©     Hybrid Journal   (Followers: 1)
Annales UMCS, Physica     Open Access  
Annals of Nuclear Medicine     Hybrid Journal   (Followers: 3)
Annals of Physics     Hybrid Journal   (Followers: 2)
Annals of West University of Timisoara - Physics     Open Access  
Annual Reports on NMR Spectroscopy     Full-text available via subscription   (Followers: 1)
Annual Review of Analytical Chemistry     Full-text available via subscription   (Followers: 9)
Annual Review of Condensed Matter Physics     Full-text available via subscription   (Followers: 1)
Annual Review of Materials Research     Full-text available via subscription   (Followers: 4)
APL Materials     Open Access   (Followers: 4)
Applied Composite Materials     Hybrid Journal   (Followers: 9)
Applied Physics A     Hybrid Journal   (Followers: 9)
Applied Physics Frontier     Open Access   (Followers: 1)
Applied Physics Letters     Hybrid Journal   (Followers: 25)
Applied Physics Research     Open Access   (Followers: 6)
Applied Physics Reviews     Hybrid Journal   (Followers: 7)
Applied Radiation and Isotopes     Hybrid Journal   (Followers: 5)
Applied Remote Sensing Journal     Open Access   (Followers: 9)
Applied Spectroscopy     Full-text available via subscription   (Followers: 12)
Applied Spectroscopy Reviews     Hybrid Journal   (Followers: 2)
Archive for Rational Mechanics and Analysis     Hybrid Journal   (Followers: 3)
Astronomy & Geophysics     Hybrid Journal   (Followers: 1)
Astrophysical Journal Letters     Full-text available via subscription   (Followers: 3)
Atoms     Open Access  
Attention, Perception & Psychophysics     Full-text available via subscription   (Followers: 6)
Autonomous Mental Development, IEEE Transactions on     Hybrid Journal   (Followers: 5)
Axioms     Open Access  
Bangladesh Journal of Medical Physics     Open Access  
Bauphysik     Hybrid Journal   (Followers: 1)
Biomaterials     Hybrid Journal   (Followers: 30)
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 15)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 12)
Biomedical Imaging and Intervention Journal     Open Access   (Followers: 5)
Biophysical Reviews     Hybrid Journal  
Biophysical Reviews and Letters     Hybrid Journal   (Followers: 3)
BMC Biophysics     Open Access   (Followers: 7)
BMC Nuclear Medicine     Open Access   (Followers: 5)
Brazilian Journal of Physics     Hybrid Journal  
Broadcasting, IEEE Transactions on     Hybrid Journal   (Followers: 5)
Bulletin of Materials Science     Open Access   (Followers: 39)
Bulletin of the Atomic Scientists     Full-text available via subscription   (Followers: 4)
Bulletin of the Lebedev Physics Institute     Hybrid Journal   (Followers: 1)
Bulletin of the Russian Academy of Sciences: Physics     Hybrid Journal  
Caderno Brasileiro de Ensino de FĂ­sica     Open Access  
Canadian Journal of Physics     Full-text available via subscription   (Followers: 1)
Cells     Open Access   (Followers: 1)
Central European Journal of Physics     Hybrid Journal   (Followers: 1)
CERN courier. International journal of high energy physics     Free  
Chinese Journal of Astronomy and Astrophysics     Full-text available via subscription   (Followers: 1)
Chinese Physics B     Full-text available via subscription  
Chinese Physics C     Full-text available via subscription  
Chinese Physics Letters     Full-text available via subscription  
Cohesion and Structure     Full-text available via subscription   (Followers: 2)
Colloid Journal     Hybrid Journal   (Followers: 2)
Communications in Mathematical Physics     Hybrid Journal   (Followers: 2)
Communications in Numerical Methods in Engineering     Hybrid Journal   (Followers: 3)
Communications in Theoretical Physics     Full-text available via subscription   (Followers: 1)
Composites Part A : Applied Science and Manufacturing     Hybrid Journal   (Followers: 50)
Composites Part B : Engineering     Hybrid Journal   (Followers: 68)
Computational Materials Science     Hybrid Journal   (Followers: 19)
Computational Mathematics and Mathematical Physics     Hybrid Journal   (Followers: 1)
Computational Particle Mechanics     Hybrid Journal  
Computational Science and Discovery     Full-text available via subscription  
Computer Physics Communications     Hybrid Journal  
Contemporary Concepts of Condensed Matter Science     Full-text available via subscription  
Contemporary Physics     Hybrid Journal   (Followers: 10)
Continuum Mechanics and Thermodynamics     Hybrid Journal   (Followers: 3)
Contributions to Plasma Physics     Hybrid Journal   (Followers: 2)
COSPAR Colloquia Series     Full-text available via subscription   (Followers: 1)
Cryogenics     Hybrid Journal   (Followers: 14)
Current Applied Physics     Full-text available via subscription   (Followers: 4)
Diamond and Related Materials     Hybrid Journal   (Followers: 12)
Differential Equations and Nonlinear Mechanics     Open Access   (Followers: 4)
Doklady Physics     Hybrid Journal   (Followers: 1)
Dynamical Properties of Solids     Full-text available via subscription  

        1 2 3 4 5 6 | Last

Journal Cover Chinese Physics C
   Full-text available via subscription Subscription journal
     ISSN (Print) 1674-1137
     Published by Institute of Physics (IOP) Homepage  [56 journals]   [SJR: 0.253]   [H-I: 8]
  • Study of pure and semileptonic decays of D s meson within R -parity
           violating supersymmetric model
    • Authors: Farida Tahir; Azeem Mir Shakeel Mahmood
      First page: 123101
      Abstract: We present the comaprative study of semileptonic and leptonic decays of D s , D ± and D 0 meson (D → Ml + α l − β , D → l + α l − β , D → l + α v α ; α,β = e,μ) within the framework of R -parity violating the ##IMG## [] Minimal Supersymmetric Standard Model (MSSM). The comparison shows that combination and product couplings, ##IMG## [] contribution to the branching fractions of the said processes (under consideration) is consistent with or comparable to the experimental measurements in most of the cases. However, some cases exist where these contributions are highly suppressed. We identify such cases in our analysis and single out the important ones suitable for exploring in the future...
      Citation: Chinese Physics C
      PubDate: 2014-12-16T00:00:00Z
      Issue No: Vol. 38, No. 12 (2014)
  • Quantum phase transitions in matrix product states of one-dimensional
           spin-½ chains
    • Authors: Zhu Jing-Min
      First page: 123102
      Abstract: For the matrix product system of a one-dimensional spin-½ chain, we present a new model of quantum phase transitions and find that in the thermodynamic limit, both sides of the critical point are respectively described by phases Ψ a 〉 = 1…1〉 representing all particles spin up and Ψ b 〉 = 0…0〉 representing all particles spin down, while the phase transition point is an isolated intermediate-coupling point where the two phases coexist equally, which is described by the so-called N -qubit maximally entangled GHZ state ##IMG## [] . At the critical point, the physical quantities including the entanglement are not discontinuous and the matrix product system has long-range correlation and N -qubit maximal entanglement. We believe that our work is helpful for having a comprehensive understanding of quantum phase transitions in matrix product states of one-dimensional spin cha...
      Citation: Chinese Physics C
      PubDate: 2014-12-16T00:00:00Z
      Issue No: Vol. 38, No. 12 (2014)
  • Competition between α-decay and β-decay for heavy and superheavy
    • Authors: Sheng Zong-Qiang; Shu Liang-Ping, Meng Ying, Hu Ji-Gang Qian Jian-Fa
      First page: 124101
      Abstract: In this work, the β-stable region for Z ≥ 90 is proposed based on a successful binding energy formula. The calculated β-stable nuclei in the β-stable region are in good agreement with the ones obtained by Möller et al. The half-lives of the nuclei close to the β-stable region are calculated and the competition between α-decay and β-decay is systematically investigated. The calculated half-lives and the suggested decay modes are well in line with the experimental results. The decay modes are mostly β—decay above the β-stable region. Especially for Z ≤ 111, all the decay modes are β − -decay. Regarding the nuclei above the β-stable region, α-decay and β − -decay (α+β − ) can occur simultaneously when Z ≥ 112. This is a very interesting phenomenon. The competition between α-decay and β-decay is very complex and drastic below the β-stable region. The predictions for half-lives and decay modes of the nuclei with Z =107–110 are pre...
      Citation: Chinese Physics C
      PubDate: 2014-12-16T00:00:00Z
      Issue No: Vol. 38, No. 12 (2014)
  • Nonlinear relativistic mean-field theory studies on He isotopes
    • Authors: Fan Guang-Wei; Dong Tie-Kuang D. Nishimura
      First page: 124102
      Abstract: The ground state properties of He isotopes are studied in the nonlinear relativistic mean-field (RMF) theory with force parameters NL-SH and TM2. The modified Glauber model is introduced as a gatekeeper to check the calculations. The investigation shows that the RMF theory provides a good description on the properties of He isotopes. The many-body space information of 4 He + neutrons is obtained reliably. As a product, the calculation gives strong evidence for a neutron halo in 5 He.
      Citation: Chinese Physics C
      PubDate: 2014-12-16T00:00:00Z
      Issue No: Vol. 38, No. 12 (2014)
  • Energy loss of charm quarks from J/ψ production in cold nuclear
    • Authors: Song Li-Hua; Miao Wen-Dan Duan Chun-Gui
      First page: 124103
      Abstract: J/ψ suppression in p-A collisions is studied by considering the nuclear effects on parton distribution, energy loss of beam proton and the finial state energy loss of color octet cc̄. The leading-order computations for J/ψ production cross-section ratios R W/Be ( x F ) are presented and compared with the selected E866 experimental data with the cc̄ remaining colored on its entire path in the medium. It is shown that the combination of the different nuclear effects accounts quite well for the observed J/ψ suppression in the experimental data. It is found that the J/ψ) suppression on R W/Be ( x F ) from the initial state nuclear effects is more important than that induced by the energy loss of color octet cc̄ in the large x F region. Whether the cc̄ pair energy loss is linear or quadratic with the path length is not determined. The obtained cc̄ pair energy loss per unit path length α=2.78±0.81 GeV/fm, w...
      Citation: Chinese Physics C
      PubDate: 2014-12-16T00:00:00Z
      Issue No: Vol. 38, No. 12 (2014)
  • Development of large-area quadrant silicon detector for charged particles
    • Authors: Bao Peng-Fei; Lin Cheng-Jian, Yang Feng, Guo Zhao-Qiao, Guo Tian-Shu, Yang Lei, Sun Li-Jie, Jia Hui-Ming, Xu Xin-Xing, Ma Nan-Ru, Zhang Huan-Qiao Liu Zu-Hua
      First page: 126001
      Abstract: The quadrant silicon detector, a kind of passivated implanted planar silicon detector with quadrant structure on the junction side, gained its wide application in charged particle detection. In this paper, the manufacturing procedure, performance test and results of the quadrant silicon detector developed recently at the China Institute of Atomic Energy are presented. The detector is about 300 μm thick with a 48 mm×48 mm active area. The leakage current under the full depletion bias voltage of −16 V is about 2.5 nA, and the rise time is better than 160 ns. The energy resolution for a 5.157 MeV α-particle is around the level of 1%. Charge sharing effects between the neighboring quads, leading to complicated correlations between two quads, were observed when α particles illuminated on the junction side. It is explained as a result of distortion of the electric field of the inter-quad region. Such an event is only about 0.6% of all events and can be neglected in an actual applicati...
      Citation: Chinese Physics C
      PubDate: 2014-12-16T00:00:00Z
      Issue No: Vol. 38, No. 12 (2014)
  • Prototype studies on the forward MWDC tracking array of the external
           target experiment at HIRFL-CSR
    • Authors: Yi Han; Zhang Zhao, Xiao Zhi-Gang, Cheng Wen-Jing, Lü Li-Ming, Yan Wei-Hua, Wang Ren-Sheng, Li Hong-Jie, Huang Yan, Zhang Yan, Duan Li-Min, Hu Rong-Jiang, Lu Chen-Gui, Yang He-Run Ma Peng
      First page: 126002
      Abstract: 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 obtained. The performances of the forward MWDCs tracking array meets the requirements of CEE in design.
      Citation: Chinese Physics C
      PubDate: 2014-12-16T00:00:00Z
      Issue No: Vol. 38, No. 12 (2014)
  • A novel CZT detector using strengthened electric field line anode
    • Authors: Fu Jian-Qiang; Li Yu-Lan, Zhang Lan, Niu Li-Bo, Jiang Hao Li Yuan-Jing
      First page: 126003
      Abstract: In this paper, we report on the design, simulation and testing of a novel CZT detector with an electrode named the Strengthened Electric Field Line Anode (SEFLA). The Strengthened Electric Field (SEF) technique and Single Polarity Charge Sensing (SPCS) technique are implemented. It could achieve the same performance as Coplanar Grid, Pixel Array CZT detectors but requires only a simple readout system. Geant4, Ansoft Maxwell and a self-developed Induced Current Calculator (ICC) package are used to develop an understanding of how the energy spectrum is formed, and the parameters of the detector are optimized. A prototype is fabricated. Experimental results demonstrate the effectiveness of this design. The test shows that the SEFLA detector achieves a FWHM of 6.0% @59.5 keV and 1.6% @662 keV, which matches well with the simulations.
      Citation: Chinese Physics C
      PubDate: 2014-12-16T00:00:00Z
      Issue No: Vol. 38, No. 12 (2014)
  • Track reconstruction based on Hough-transform for nTPC
    • Authors: Niu Li-Bo; Li Yu-Lan, Huang Meng, He Bin Li Yuan-Jing
      First page: 126201
      Abstract: A GEM-TPC prototype, which will be used as a fast neutron spectrometer based on the recoil proton method, is designed and being constructed in Tsinghua University. In order to derive the recoil angle of the recoil proton, tracks of recoil proton in the TPC sensitive volume must be reconstructed. An algorithm based on Hough-transform for track finding and least square method for track fitting was developed in this paper. Based on the Monte Carlo simulation data given by Geant4, a detailed track reconstruction process was introduced and the spectrum of induced fast neutron was derived here. The results show that the algorithm was effective and high-performance. With the recoil angle of the proton less than 30°, a 4.4% FWHM neutron energy resolution was derived for 5 MeV induced fast neutron, and the detection efficiency was about 2×10 −4 .
      Citation: Chinese Physics C
      PubDate: 2014-12-16T00:00:00Z
      Issue No: Vol. 38, No. 12 (2014)
  • A CW superconducting linac as the proton driver for a medium baseline
           neutrino beam in China
    • Authors: Li Zhi-Hui; Tang Jing-Yu
      First page: 127001
      Abstract: In a long-term planning for neutrino experiments in China, a medium baseline neutrino beam is proposed which uses a continue wave (CW) superconducting linac of 15 MW in beam power as the proton driver. The linac will be based on the technologies which are under development by the China-ADS project, namely it is also composed of a 3.2 MeV normal conducting RFQ and five different types of superconducting cavities. However, the design philosophy is quite different from the China-ADS linac because of the much weaker requirement on reliability here. The nominal design energy and current are 1.5 GeV and 10 mA, respectively. The general considerations and preliminary results on the physics design will be presented here. In addition, the alternative designs such as 2.0 GeV and 2.5 GeV, which may be required by the general design, can be easily extended from the nominal one.
      Citation: Chinese Physics C
      PubDate: 2014-12-16T00:00:00Z
      Issue No: Vol. 38, No. 12 (2014)
  • A new measurement method for electrode gain in an orthogonally symmetric
           beam position monitor
    • Authors: Zou Jun-Ying; Wu Fang-Fang, Yang Yong-Liang, Sun Bao-Gen, Zhou Ze-Ran, Luo Qing, Lu Ping Xu Hong-Liang
      First page: 127002
      Abstract: The new beam position monitor (BPM) system of the injector at the upgrade project of the Hefei Light Source (HLS II) has 19 stripline beam position monitors. Most consist of four orthogonally symmetric stripline electrodes. Differences in electronic gain and mismachining tolerance can cause changes in the beam response of the BPM electrodes. This variation will couple the two measured horizontal positions, resulting in measuring error. To alleviate this effect, a new technique to measure the relative response of the four electrodes has been developed. It is independent of the beam charge, and the related coefficient can be calculated theoretically. The effect of electrode coupling on this technique is analyzed. The calibration data is used to fit the gain for all 19 injector beam position monitors. The results show the standard deviation of the distribution of measured gains is about 5%.
      Citation: Chinese Physics C
      PubDate: 2014-12-16T00:00:00Z
      Issue No: Vol. 38, No. 12 (2014)
  • Analytical estimation of ATF beam halo distribution
    • Authors: Wang Dou; Philip Bambade, Kaoru Yokoya Gao Jie
      First page: 127003
      Abstract: In order to study the backgrounds in the ATF2 beam line and the interaction point (IP), this paper has developed an analytical method to give an estimation of the ATF beam halo distribution based on K. Hirata and K. Yokoya's theory. The equilibrium particle distribution of the beam tail in the ATF damping ring is presented, with each electron affected by several stochastic processes such as beam-gas scattering, beam-gas bremsstrahlung and intra-beam scattering, in addition to the synchrotron radiation damping effects. This is a general method which can also be applied to other electron rings.
      Citation: Chinese Physics C
      PubDate: 2014-12-16T00:00:00Z
      Issue No: Vol. 38, No. 12 (2014)
  • Simulation of electron behavior in PIG ion source for 9 MeV cyclotron
    • Authors: X. J. Mu; M. Ghergherehchi, Y. H. Yeon, J. W. Kim J. S. Chai
      First page: 127004
      Abstract: In this paper, we focus on a PIG source for producing intense H-ions inside a 9 MeV cyclotron. The properties of the PIG ion source were simulated for a variety of electric field distributions and magnetic field strengths using a CST particle studio. After analyzing the secondary electron emission (SEE) as a function of both magnetic and electric field strengths, we found that for the modeled PIG geometry, a magnetic field strength of 0.2 T provided the best results in terms of the number of secondary electrons. Furthermore, at 0.2 T, the number of secondary electrons proved to be greatest regardless of the cathode potential. Also, the modified PIG ion source with quartz insulation tubes was tested in a KIRAMS-13 cyclotron by varying the gas flow rate and arc current, respectively. The capacity of the designed ion source was also demonstrated by producing plasma inside the constructed 9 MeV cyclotron. As a result, the ion source is verified as being capable of producing an inten...
      Citation: Chinese Physics C
      PubDate: 2014-12-16T00:00:00Z
      Issue No: Vol. 38, No. 12 (2014)
  • Bunch evolution study in optimization of MeV ultrafast electron
    • Authors: Lu Xian-Hai; Du Ying-Chao, Huang Wen-Hui Tang Chuan-Xiang
      First page: 128201
      Abstract: Megaelectronvolt ultrafast electron diffraction (UED) is a promising detection tool for ultrafast processes. The quality of diffraction image is determined by the transverse evolution of the probe bunch. In this paper, we study the contributing terms of the emittance and space charge effects to the bunch evolution in the MeV UED scheme, employing a mean-field model with an ellipsoidal distribution as well as particle tracking simulation. The small transverse dimension of the drive laser is found to be critical to improve the reciprocal resolution, exploiting both smaller emittance and larger transverse bunch size before the solenoid. The degradation of the reciprocal spatial resolution caused by the space charge effects should be carefully controlled.
      Citation: Chinese Physics C
      PubDate: 2014-12-16T00:00:00Z
      Issue No: Vol. 38, No. 12 (2014)
  • Dose estimation and shielding calculation for X-ray hazard at high
           intensity laser facilities
    • Authors: Qiu Rui; Zhang Hui, Yang Bo, James C. Liu, Sayed H. Rokni, Michael B. Woods Li Jun-Li
      First page: 129001
      Abstract: An ionizing radiation hazard produced from the interaction between high intensity lasers and solid targets has been observed. Laser-plasma interactions create “hot” electrons, which generate bremsstrahlung X-rays when they interact with ions in the target. However, up to now only limited studies have been conducted on this laser-induced radiological protection issue. In this paper, the physical process and characteristics of the interaction between high intensity lasers and solid targets are analyzed. The parameters of the radiation sources are discussed, including the energy conversion efficiency from laser to hot electrons, hot electron energy spectrum and electron temperature, and the bremsstrahlung X-ray energy spectrum produced by hot electrons. Based on this information, the X-ray dose generated with high- Z targets for laser intensities between 10 14 and 10 20 W/cm 2 is estimated. The shielding effects of common shielding items such as ...
      Citation: Chinese Physics C
      PubDate: 2014-12-16T00:00:00Z
      Issue No: Vol. 38, No. 12 (2014)
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