Combining the merits of linear and toroidal confiprations with the fast and slow process concepts,we consider a fusion reactor concept consisting of two axisymmetric tandem mirrorlike sections and two heliac stellarat...Combining the merits of linear and toroidal confiprations with the fast and slow process concepts,we consider a fusion reactor concept consisting of two axisymmetric tandem mirrorlike sections and two heliac stellarator U-bends.The D-D reactor parameters are presented.The radio frequency(RF),energetic components and the plugs are needed only at the startup phase.These greatly cut down the coat and relax the technical requirements of engineering.展开更多
A strong-coupling plasma model with ion screening and electron polarization was used to study the room temperature D-D fusion reaction rate.By using the ground state harmonic-oscillator wave,function,we evaluated the ...A strong-coupling plasma model with ion screening and electron polarization was used to study the room temperature D-D fusion reaction rate.By using the ground state harmonic-oscillator wave,function,we evaluated the nearest-neighbor penetration probability by WKB method.The D-D nuclear fusion re-action rate was calculated.The deuteron density is found to be crucial for the occurrence of fusion reaction while the temperature is much less important.展开更多
The alpha-particle effects on high-n toroidal shear Alfven mode are investigated analytically.The mode can be driven to unstable when the alpha-particles have an anisotropic distribution function due to ripple losses ...The alpha-particle effects on high-n toroidal shear Alfven mode are investigated analytically.The mode can be driven to unstable when the alpha-particles have an anisotropic distribution function due to ripple losses in tokamaks.The growth rates of the instability in both“fast”and "slow"plasma heating cases are calculated,and the conditions for the excitation of the modes are also studied.展开更多
A general formalism of the parametric instabilities in the magnetized inhomogencon plasmas is presented. The gyrokinetic and oscillating center methods are adopted For sin plification dipole pump (k0= 0) approximation...A general formalism of the parametric instabilities in the magnetized inhomogencon plasmas is presented. The gyrokinetic and oscillating center methods are adopted For sin plification dipole pump (k0= 0) approximation is considered in the derivation. The WK approximation is used in the inhomogeneous plasma cases. Some properties and applications of the theory arc discussed.展开更多
The stability properties of ion temperature gradient instability are studied analytically in both weak and strong ballooning limits for toroidal geometry.The local anomalous ion thermal conductivity Xi is obtained.The...The stability properties of ion temperature gradient instability are studied analytically in both weak and strong ballooning limits for toroidal geometry.The local anomalous ion thermal conductivity Xi is obtained.The scaling of this conductivity under slab approximation is consistent with the results given by Connor et al.The toroidal effects contribute an additional Pfirsch-Schlüter factor(l+2q2)3/4 to the conductivity.展开更多
The effects of kinetic pole on drift cyclotron loss-cone instabzlzty are studied in detail,especially for the △B-drift resonance contribution.It is foimd that the kinetic resonance acts as dissipative effect which ca...The effects of kinetic pole on drift cyclotron loss-cone instabzlzty are studied in detail,especially for the △B-drift resonance contribution.It is foimd that the kinetic resonance acts as dissipative effect which can enhance the instability and broaden the unstable region of negative energy DCLC mode.展开更多
The electron cyclotron resonance heating(ECRH)processes to produce the energetic trapped electrons are proposed.Injecting the RF waves on a certain magnetic surface with proper frequency and wave vector.are suggested....The electron cyclotron resonance heating(ECRH)processes to produce the energetic trapped electrons are proposed.Injecting the RF waves on a certain magnetic surface with proper frequency and wave vector.are suggested.By the relay of different high electron cyclotron harmonic resonances a few percent of electrons are heated up to a desired energy.展开更多
The stability of m=1 internal kink mode in a tokamak plasma with an anisotropic energetic particle component has been analyzed using the generalized energy principle.It is found that employing barely trapped energetic...The stability of m=1 internal kink mode in a tokamak plasma with an anisotropic energetic particle component has been analyzed using the generalized energy principle.It is found that employing barely trapped energetic particles can significantly improve the stability properties.展开更多
Mode conversion theories, especially linear mode conversion theories including local and nonlocal, are reviewed. The issues they are addressed and the limitations with these approaches are discussed.
基金Project supported by the Science Fund of the Chinese Academy of Sciences。
文摘Combining the merits of linear and toroidal confiprations with the fast and slow process concepts,we consider a fusion reactor concept consisting of two axisymmetric tandem mirrorlike sections and two heliac stellarator U-bends.The D-D reactor parameters are presented.The radio frequency(RF),energetic components and the plugs are needed only at the startup phase.These greatly cut down the coat and relax the technical requirements of engineering.
文摘A strong-coupling plasma model with ion screening and electron polarization was used to study the room temperature D-D fusion reaction rate.By using the ground state harmonic-oscillator wave,function,we evaluated the nearest-neighbor penetration probability by WKB method.The D-D nuclear fusion re-action rate was calculated.The deuteron density is found to be crucial for the occurrence of fusion reaction while the temperature is much less important.
基金supported by NSFC,APSC and UNESCO grant SC/RP 231322.7.
文摘The alpha-particle effects on high-n toroidal shear Alfven mode are investigated analytically.The mode can be driven to unstable when the alpha-particles have an anisotropic distribution function due to ripple losses in tokamaks.The growth rates of the instability in both“fast”and "slow"plasma heating cases are calculated,and the conditions for the excitation of the modes are also studied.
文摘A general formalism of the parametric instabilities in the magnetized inhomogencon plasmas is presented. The gyrokinetic and oscillating center methods are adopted For sin plification dipole pump (k0= 0) approximation is considered in the derivation. The WK approximation is used in the inhomogeneous plasma cases. Some properties and applications of the theory arc discussed.
文摘The stability properties of ion temperature gradient instability are studied analytically in both weak and strong ballooning limits for toroidal geometry.The local anomalous ion thermal conductivity Xi is obtained.The scaling of this conductivity under slab approximation is consistent with the results given by Connor et al.The toroidal effects contribute an additional Pfirsch-Schlüter factor(l+2q2)3/4 to the conductivity.
文摘The effects of kinetic pole on drift cyclotron loss-cone instabzlzty are studied in detail,especially for the △B-drift resonance contribution.It is foimd that the kinetic resonance acts as dissipative effect which can enhance the instability and broaden the unstable region of negative energy DCLC mode.
基金This work was supported by the Science Fund of the Chinese Academy of Sciences.
文摘The electron cyclotron resonance heating(ECRH)processes to produce the energetic trapped electrons are proposed.Injecting the RF waves on a certain magnetic surface with proper frequency and wave vector.are suggested.By the relay of different high electron cyclotron harmonic resonances a few percent of electrons are heated up to a desired energy.
文摘The stability of m=1 internal kink mode in a tokamak plasma with an anisotropic energetic particle component has been analyzed using the generalized energy principle.It is found that employing barely trapped energetic particles can significantly improve the stability properties.
文摘Mode conversion theories, especially linear mode conversion theories including local and nonlocal, are reviewed. The issues they are addressed and the limitations with these approaches are discussed.
