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STUDY OF THE NONLINEAR THREE-DIMENSIONAL DEBYE SCREENING IN PLASMAS
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作者 林长 张秀莲 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2000年第5期567-572,共6页
The nonlinear three-dimensional Debye screening in plasmas is investigated. A new kind of analytical equation, which is in agreement with the three-dimensional Poisson equation for the nonlinear Debye potential, is ob... The nonlinear three-dimensional Debye screening in plasmas is investigated. A new kind of analytical equation, which is in agreement with the three-dimensional Poisson equation for the nonlinear Debye potential, is obtained. It is shown that the symmetry distribution of the Debye screening in plasmas can be described by the equation. 展开更多
关键词 the nonlinear three-dimensional debye screening the Poisson equation PLASMAS the Ritz method
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Plasma Model of Generation and Slip of Linear Defects in Crystalline Materials 被引量:2
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作者 V. L. Busov Grechkina Margarita Vladimirovna 《Applied Mathematics》 2020年第11期1167-1177,共11页
In dielectrics and semiconductors, a plasma model of the generation and slip of dislocations is considered, where under shock loads in a generalized space of rectangular pulses an alternating field forms a distributio... In dielectrics and semiconductors, a plasma model of the generation and slip of dislocations is considered, where under shock loads in a generalized space of rectangular pulses an alternating field forms a distribution of pairs of photoelectrons and cations;these electrons with velocities <em>V<sub>e</sub></em> create <em>δ</em>-collisions with cold plasma from free electrons and holes with masses <em>m<sub>e</sub></em> and <em>m<sub>h</sub></em> (<em>m<sub>h</sub></em>  <span style="white-space:normal;"><span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8811;</span></span> </span></span><em>m<sub>e</sub></em>), they emit and absorb longitudinal electron plasma waves whose phase velocities <em>w<sub>pw</sub></em> / <em>k<sub>pw</sub></em> are close to or are equal to the velocities <em>V<sub>e</sub></em>, while the frequencies <em>w<sub>pw</sub></em> and wave numbers <em>k<sub>pw</sub></em> of the wave packet of plasma waves are complex, the short-wave components <img src="Edit_3da65014-7fd8-4799-bcf1-02d90028f4e0.bmp" alt="" /> of this wave packet at <em>k<sub>pw</sub></em> <span style="white-space:normal;"><span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8901;</span></span></span> </span><em>a<sub>e </sub></em><span style="white-space:nowrap;">&#8811; </span>1 (<em>a<sub>e</sub></em> -Debye screening radius) decay in the core linear defect, and its long-wavelength components <img src="Edit_4481889b-5097-4d26-9019-b0322f5ff8d0.bmp" alt="" /> propagate in the region of the medium surrounding the core of the defect at <em>k<sub>pw</sub></em> <span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8901;</span></span></span> <em>a<sub>e</sub></em> <span style="white-space:nowrap;"><<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8773;</span></span></span> 1. When a defect is generated, the distribution of cations under the influence of the internal Coulomb field shifts to the region of the first peak (protrusion) of the electron plasma wave, thereby forming a vacancy valley. When sliding under the influence of an external electric field, a cationic plasma wave consisting of a vacancy valley and two cationic protrusions moves against the background of an additional potential relief created by an electron plasma wave near the core of the defect. It has been shown that <em>δ</em>-collisions create flows of dynamic large-scale correlations of plasma fluctuations in the form of asymptotics of different-time correlators of density and potential fluctuations as <em>t</em> → +∞. 展开更多
关键词 Solid-State Plasma debye screening Radius Charged Particle Collisions Plasma Wave Flows of Dynamic Correlations of Density Potential Fluctuations
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An Effective Formulation on Quantum Hadrodynamics at Finite Temperatures and Densities
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作者 SUN Bao-Xi Lü Xiao-Fu +3 位作者 LI Lei NING Ping-Zhi SHEN Peng-Nian ZHAO En-Guang 《Communications in Theoretical Physics》 SCIE CAS CSCD 2006年第3期527-534,共8页
According to Wick's theorem, the second order self-energy corrections of hadrons in the hot and dense nuclear matter are calculated. Furthermore, the Feynman rules are summarized, and an effective formulation on quan... According to Wick's theorem, the second order self-energy corrections of hadrons in the hot and dense nuclear matter are calculated. Furthermore, the Feynman rules are summarized, and an effective formulation on quantum hadrodynamics at finite temperatures and densities is evauated. As the strong couplings between nucleons are considered, the self-consistency of this method is discussed in the framework of relativistic mean-field approximation. Debye screening masses of the scalar and vector mesons in the hot and dense nuclear matter are calculated with this method in the relativistic mean-field approximation. The results are different from those of thermofield dynamics and Brown-Rho conjecture. Moreover, the effective masses of the photon and the nucleon in the hot and dense nuclear matter are discussed. 展开更多
关键词 quantum hadrodynamics Wick's theorem debye screening masses
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Interfacial Polymer Engineered Field Effect Transistor Biosensors for Rapid and Efficient Identification of SARS-CoV-2 N Antigen 被引量:1
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作者 Qiumin Peng Wanting Huang +3 位作者 Duo Chen Zhipeng Gao Yanbing Yang Quan Yuan 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2023年第18期2253-2260,共8页
With the advantages of high sensitivity,rapid response,label-free,and simple operation,field effect transistor biosensors have shown promising application prospects in large-scale pathogen screening.However,in practic... With the advantages of high sensitivity,rapid response,label-free,and simple operation,field effect transistor biosensors have shown promising application prospects in large-scale pathogen screening.However,in practical biological fluids with relatively high ionic strength,such as saliva and serum,the Debye screening effect will weaken the interaction between FET biosensors and target bio-molecules,thereby affecting the sensing sensitivity and accuracy. 展开更多
关键词 Field effect transistor debye screening effect BIOSENSING Interfacial engineering Epidemic screening
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