On montre que la distribution en vitesse de la turbulence fractale dans R 3 est la distribution stable avec l'exposant caracteristique D/2, ou D est la dimension fractale de la turbulence
结果表明，分形湍流在r3中的速度分布为特征指数D/2的稳定分布，其中D为湍流的分形维数
{"title":"Stable Distribution and Levy Process in Fractal Turbulence","authors":"H. Takayasu","doi":"10.1143/PTP.72.471","DOIUrl":"https://doi.org/10.1143/PTP.72.471","url":null,"abstract":"On montre que la distribution en vitesse de la turbulence fractale dans R 3 est la distribution stable avec l'exposant caracteristique D/2, ou D est la dimension fractale de la turbulence","PeriodicalId":22276,"journal":{"name":"The annual research report","volume":"81 1","pages":"122-127"},"PeriodicalIF":0.0,"publicationDate":"1984-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84743115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The inter-ionic density correlations and the associated screening potential are investigated for those dense, high-temperature plasmas with parameters appropriate to the inertially confined fusion experiments and the interior of main-sequence stars. The hypernetted chain scheme is used for the analysis of the correlations, where the screening effect of the electrons is taken into account via the dielectric function with inclusion of partial degeneracy and the local-field correction. We derive explicit analytic expressions for the enhancement rate of thermonuclear reactions applicable uniformly over the entire parameter domain of plasmas with the ionic charge Z =1 and 2.
{"title":"Ion-Density Correlations and Enhancement of Thermonuclear Reaction Rate in Dense, Inertially Confined Fusion Plasmas","authors":"S. Ichimaru","doi":"10.1143/JPSJ.53.2039","DOIUrl":"https://doi.org/10.1143/JPSJ.53.2039","url":null,"abstract":"The inter-ionic density correlations and the associated screening potential are investigated for those dense, high-temperature plasmas with parameters appropriate to the inertially confined fusion experiments and the interior of main-sequence stars. The hypernetted chain scheme is used for the analysis of the correlations, where the screening effect of the electrons is taken into account via the dielectric function with inclusion of partial degeneracy and the local-field correction. We derive explicit analytic expressions for the enhancement rate of thermonuclear reactions applicable uniformly over the entire parameter domain of plasmas with the ionic charge Z =1 and 2.","PeriodicalId":22276,"journal":{"name":"The annual research report","volume":"24 1","pages":"140-164"},"PeriodicalIF":0.0,"publicationDate":"1984-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74215861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Sasao, A. Matsumoto, A. Nishizawa, S. Takagi, S. Amamiya, T. Masuda, Y. Tsurita, F. Fukuzawa, Y. Haruyama, Yoshinori Kanamori
Single and double electron capture cross sections for He 2+ in collision with Li° have been measured in the energy range of 0.8–2.0 MeV. The lithium target density was absolutely determined by the Rutherford scattering measurement. The results are consistent with the recent data measured at lower energies.
{"title":"ELECTRON CAPTURE CROSS SECTIONS IN HIGH ENERGY He^ +Li°COLLISIONS","authors":"M. Sasao, A. Matsumoto, A. Nishizawa, S. Takagi, S. Amamiya, T. Masuda, Y. Tsurita, F. Fukuzawa, Y. Haruyama, Yoshinori Kanamori","doi":"10.1143/JPSJ.55.102","DOIUrl":"https://doi.org/10.1143/JPSJ.55.102","url":null,"abstract":"Single and double electron capture cross sections for He 2+ in collision with Li° have been measured in the energy range of 0.8–2.0 MeV. The lithium target density was absolutely determined by the Rutherford scattering measurement. The results are consistent with the recent data measured at lower energies.","PeriodicalId":22276,"journal":{"name":"The annual research report","volume":"106 1","pages":"2-12"},"PeriodicalIF":0.0,"publicationDate":"1984-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78309478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1984-03-01DOI: 10.1103/PHYSREVLETT.52.1500
R. Sugihara, S. Takeuchi, K. Sakai, M. Matsumoto
A charged particle trapped in an electrostatic wave is accelerated in the plane perpendicular to the wave vector k. It is found that there is an optimum angle theta = theta/sub m/ at which the particle gains a maximum energy which is about four times larger than that at theta = ..pi../2, theta being the angle between k and the magnetic field.
{"title":"DC Acceleration of Charged Particles by an Electrostatic Wave Propagating Obliquely to a Magnetic Field B^^^ _0","authors":"R. Sugihara, S. Takeuchi, K. Sakai, M. Matsumoto","doi":"10.1103/PHYSREVLETT.52.1500","DOIUrl":"https://doi.org/10.1103/PHYSREVLETT.52.1500","url":null,"abstract":"A charged particle trapped in an electrostatic wave is accelerated in the plane perpendicular to the wave vector k. It is found that there is an optimum angle theta = theta/sub m/ at which the particle gains a maximum energy which is about four times larger than that at theta = ..pi../2, theta being the angle between k and the magnetic field.","PeriodicalId":22276,"journal":{"name":"The annual research report","volume":"7 1","pages":"2-14"},"PeriodicalIF":0.0,"publicationDate":"1984-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89987340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1984-02-27DOI: 10.1103/PHYSREVLETT.52.697
R. MacKay, J. Meiss, I. Percival
The theory of transport in nonlinear dynamics is developed in terms of ''leaky'' barriers which remain when invariant tori are destroyed. A critical exponent for transport times across destroyed tori is obtained which explains numerical results of Chirikov. The combined effects of many destroyed tori lead to power-law decay of correlations observed in many computations.
{"title":"STOCHASTICITY AND TRANSPORT IN HAMILTONIAN SYSTEMS","authors":"R. MacKay, J. Meiss, I. Percival","doi":"10.1103/PHYSREVLETT.52.697","DOIUrl":"https://doi.org/10.1103/PHYSREVLETT.52.697","url":null,"abstract":"The theory of transport in nonlinear dynamics is developed in terms of ''leaky'' barriers which remain when invariant tori are destroyed. A critical exponent for transport times across destroyed tori is obtained which explains numerical results of Chirikov. The combined effects of many destroyed tori lead to power-law decay of correlations observed in many computations.","PeriodicalId":22276,"journal":{"name":"The annual research report","volume":"63 1","pages":"42-54"},"PeriodicalIF":0.0,"publicationDate":"1984-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83158014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1983-12-01DOI: 10.1017/S0263034600000513
M. Nambu
{"title":"A NEW MASER EFFECT IN PLASMA TURBULENCE","authors":"M. Nambu","doi":"10.1017/S0263034600000513","DOIUrl":"https://doi.org/10.1017/S0263034600000513","url":null,"abstract":"","PeriodicalId":22276,"journal":{"name":"The annual research report","volume":"17 1","pages":"191-197"},"PeriodicalIF":0.0,"publicationDate":"1983-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87405178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In order to interpret the spectral-line intensities emitted from various plasmas, a collisional-radiative-model program has been constructed for heliumlike ions. In this model a population of 61 excited levels is considered, and excitation, deexcitation, ionization and three-body recombination by electron collisions, spontaneous transition, radiative recombination, and dielectronic recombination have been included. For these processes, the most reliable rate coefficients, experimental or theoretical, have been employed. A detailed account is given of the program along with the review of the rate coefficients adopted. As an example of its applications, line-intensity data for theta-pinch plasmas are analyzed; for oxygen the three sets of experiments are consistent with the present calculation. For the case of carbon, however, the intensity ratio cannot be interpreted consistently on the assumption of the ionizing-plasma model. Rather, it is strongly suggested that the plasma has a significant contribution from the recombining-plasma component.
{"title":"Collisional-Radiative Model for Helium-Like Ions : Application to Intermediate-Density Plasmas","authors":"T. Fujimoto, T. Kato","doi":"10.1103/PHYSREVA.30.379","DOIUrl":"https://doi.org/10.1103/PHYSREVA.30.379","url":null,"abstract":"In order to interpret the spectral-line intensities emitted from various plasmas, a collisional-radiative-model program has been constructed for heliumlike ions. In this model a population of 61 excited levels is considered, and excitation, deexcitation, ionization and three-body recombination by electron collisions, spontaneous transition, radiative recombination, and dielectronic recombination have been included. For these processes, the most reliable rate coefficients, experimental or theoretical, have been employed. A detailed account is given of the program along with the review of the rate coefficients adopted. As an example of its applications, line-intensity data for theta-pinch plasmas are analyzed; for oxygen the three sets of experiments are consistent with the present calculation. For the case of carbon, however, the intensity ratio cannot be interpreted consistently on the assumption of the ionizing-plasma model. Rather, it is strongly suggested that the plasma has a significant contribution from the recombining-plasma component.","PeriodicalId":22276,"journal":{"name":"The annual research report","volume":"31 1","pages":"1-38"},"PeriodicalIF":0.0,"publicationDate":"1983-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88851624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1983-08-01DOI: 10.1017/S0263034600000586
H. Murakami, T. Aoki, S. Kawata, K. Niu
Rotating motions of propagating LIB are analyzed in order to suppress the instability of mixed mode of the Kelvin-Helmholtz, tearing and sausage types by the action of a self-induced magnetic field in the axial direction. The beams are assumed to be charge-neutralized but not current-neutralized. The steady-state solutions of propagating LIB with rotations are numerically obtained first. Through the dispersion relation with respect to the ikonal type of perturbations which are added to the steady-state solutions, the growth rates of instabilities appearing in LIB are obtained. It is concluded that if the mean rotating velocity of LIB is comparable to the propagation velocity, in other words, if the induced magnetic field intensity in the axial direction is comparable to the magnetic field intensity in the azimuthal direction, the macro-instability disappears in the propagating ion beam.
{"title":"Rotating and Propagating LIB Stabilized by Self-Induced Magnetic Field","authors":"H. Murakami, T. Aoki, S. Kawata, K. Niu","doi":"10.1017/S0263034600000586","DOIUrl":"https://doi.org/10.1017/S0263034600000586","url":null,"abstract":"Rotating motions of propagating LIB are analyzed in order to suppress the instability of mixed mode of the Kelvin-Helmholtz, tearing and sausage types by the action of a self-induced magnetic field in the axial direction. The beams are assumed to be charge-neutralized but not current-neutralized. The steady-state solutions of propagating LIB with rotations are numerically obtained first. Through the dispersion relation with respect to the ikonal type of perturbations which are added to the steady-state solutions, the growth rates of instabilities appearing in LIB are obtained. It is concluded that if the mean rotating velocity of LIB is comparable to the propagation velocity, in other words, if the induced magnetic field intensity in the axial direction is comparable to the magnetic field intensity in the azimuthal direction, the macro-instability disappears in the propagating ion beam.","PeriodicalId":22276,"journal":{"name":"The annual research report","volume":"5 1","pages":"1-27"},"PeriodicalIF":0.0,"publicationDate":"1983-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79206719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A reduced set of ideal magnetohydrodynamic equations is derived for large‐aspect‐ratio, low‐β tokamaks that adequately describes the linear and nonlinear evolution of ideal internal kink modes in tokamaks.
{"title":"REDUCED EQUATIONS FOR INTERNAL KINKS IN TOKAMAKS","authors":"R. Izzo, W. Park, J. Manickam, J. DeLucia","doi":"10.1063/1.864030","DOIUrl":"https://doi.org/10.1063/1.864030","url":null,"abstract":"A reduced set of ideal magnetohydrodynamic equations is derived for large‐aspect‐ratio, low‐β tokamaks that adequately describes the linear and nonlinear evolution of ideal internal kink modes in tokamaks.","PeriodicalId":22276,"journal":{"name":"The annual research report","volume":"35 1","pages":"30-42"},"PeriodicalIF":0.0,"publicationDate":"1983-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88500188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Effect of Trapped Electrons on the Wave-Induced Current","authors":"M. Taguchi","doi":"10.1143/jpsj.52.2035","DOIUrl":"https://doi.org/10.1143/jpsj.52.2035","url":null,"abstract":"","PeriodicalId":22276,"journal":{"name":"The annual research report","volume":"7 1","pages":"1-22"},"PeriodicalIF":0.0,"publicationDate":"1983-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73362170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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