3 results about "Strong field" patented technology

The application relates to the technical field of pulse power, in particular to a magnetic core auxiliary coaxial pre-ionization three-electrode gas switch, which comprises a gas switch main body, the gas switch main body comprises a low-voltage electrode, a high-voltage electrode and a trigger electrode which are coaxially arranged in an insulating support; the trigger electrode and the low-voltage electrode form a pre-ionization gap, and the trigger electrode and the high-voltage electrode form a main gap; the trigger electrode is used for receiving a trigger pulse voltage; when the trigger pulse makes the bottom of the trigger electrode produce strong field distortion, the pre-ionization gap is rapidly broken down, the main gap is pre-ionized by ultraviolet, and the gas switch main gap is rapidly broken down after the trigger pulse reaches the low-voltage electrode. The switch can improve the stability of the main gap breakdown.

The invention discloses a tokamak rupture escape electron real-time control method and system. The method comprises the steps that S1, real-time data monitoring of plasma operation is carried out; s2, on the basis of the monitoring data in the step S1, identification and prediction of the operation state of the plasma are completed; s3, when plasma rupture is identified or predicted in the step S2, emitting a strong magnetic disturbance field and / or injecting gasified tungsten to the plasma, dissipating rupture escape electrons, if generation of the rupture escape electrons is successfully avoided, completing the task, and if generation of the rupture escape electrons is not successfully avoided, entering S4; s4, the plasma is pushed to impact the first wall of the strong field side of the device, if the escape electrons are successfully eliminated, the task is completed, and if the generation of the broken escape electrons is not successfully eliminated, the step S5 is executed; and S5, injecting deuterium into the plasma core part to freeze and crush the projectile, relieving rupture escape electrons, and completing the task. Therefore, the damage to the tokamak fusion device caused by the broken escape electrons is avoided and relieved.

The invention belongs to the technical field of battery electrode materials, and discloses a Prussian blue positive electrode material, a preparation method thereof and an application of the Prussian blue positive electrode material in a sodium ion battery, and the preparation method comprises the following steps: adding sodium pentacyanammoferrate and a complexing agent into water in proportion to obtain a solution I; preparing a ferrous salt solution to obtain a solution II; and slowly adding the solution II into the solution I to obtain turbid liquid, standing and aging the turbid liquid, carrying out solid-liquid separation, and washing and drying a solid product to obtain the Prussian blue positive electrode material. Fe < 2 + > and [Fe (CN) 5] < 3-> are connected in a five-coordinate manner in a nucleation process to generate cyano defects, and a strong field ligand-NH2 functional group is introduced. The introduced cyano vacancy reduces the coordination number of the low-spinning iron, promotes the spinning state of the low-spinning iron, promotes the spinning state of the low-spinning iron to be converted into a high / middle spinning state, and remarkably improves the reaction activity. The introduced-NH2 functional group is used for inhibiting the Jahn-Teller distortion; the flexible structure effectively relieves lattice stress caused by sodium ion intercalation / deintercalation, and the structural stability is enhanced.