Research on pinching characteristics of electron beams emitted from different cathode surfaces of a rod-pinch diode

Gao, Yi; Qiu, Aici; Zhong, Zhiyuan; Zhang, Peng-Fei; Wang, Zhiguo; Yang, Hu

doi:10.1063/1.3455536

Cited by 7 publications

(1 citation statement)

References 8 publications

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“…The electric field on the electrode surface will be reduced by a factor of ε r by this dielectric layer, where ε r is the relative permittivity of the coating film. In addition, the coating layer can absorb and shield electrons emitted from the cathode conductor or attenuate the intensity [31]. Table I shows the voltage grading variations from the balanced distribution for each piece of insulator ring which are all less than 10%.…”

Section: B Insulation Stackmentioning

confidence: 99%

Design of a 1-MV induction cavity and validation of the two-dimensional circuit model

Guo

Xie

Wang

et al. 2019

Phys. Rev. Accel. Beams

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We present the design and test results of an induction cavity, which is a full-scale prototype cell of a prospective six-stage induction voltage adder. This induction cell runs in positive polarity and the output transmission line operates in the vacuum insulation state. The design methods and configurations of the azimuthal transmission line, insulation stack, magnetic core, cathode plate, and output transmission line in the induction cell are given in detail. The induction cavity is driven by one pulsed power system consisting of a tesla transformer, intermediate storage capacitor, laser triggered gas switch, pulse forming line, selfbreaking oil switch, and a water transmission line. A maximum voltage about 1.05 MV could be achieved across one 7.0 Ω water resistor load. A full circuit model including the primary energy storage section and pulse forming section is proposed. The circuit model also includes the two-dimensional circuit model of the induction cavity [Phys. Rev. Accel. Beams 20, 020401 (2017)]. The voltage and current waveforms across the feed port, azimuthal transmission line, insulation stack, and resistor load obtained during the experiment are compared with the circuit simulation results. It demonstrates that they can agree with each other very well.

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Section: B Insulation Stackmentioning

confidence: 99%

Design of a 1-MV induction cavity and validation of the two-dimensional circuit model

Guo

Xie

Wang

et al. 2019

Phys. Rev. Accel. Beams

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Applicability of the 1D Child–Langmuir relation for ion diode current calculation

Pushkarev

Isakova

2016

Laser Part. Beams

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The paper presents the results of the analysis of the influence of curvature of the electrons trajectory in the anode–cathode gap of an ion diode on the diode impedance and evaluation of applicability of the one-dimensional (1D) Child–Langmuir (CL) ratio for calculation of the electron current. Investigations of an ion diode with a graphite anode in self-magnetic insulation mode were carried out. Experiments were performed on the TEMP-4M ion accelerator set in a double pulse mode, with the first negative pulse (150–200 kV, 400–600 ns) followed by the second positive pulse (250–300 kV, 150 ns). The result of this study is that we have determined the boundary conditions for the applicability of 1D CL ratio for calculation of the electron current in the ion diode. It was found that the deviation of the diode current–voltage characteristics from CL ratio will be observed only with a significant change in the acceleration voltage during electron drift or when the electron drift time exceeds the transit time of ions.

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Reducing the Axial Spot Size of a Rod-Pinch Diode by a Compound Cathode

Sun

Zhang

Gao

et al. 2011

IEEE Trans. Plasma Sci.

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Research on pinching characteristics of electron beams emitted from different cathode surfaces of a rod-pinch diode

Cited by 7 publications

References 8 publications

Design of a 1-MV induction cavity and validation of the two-dimensional circuit model

Design of a 1-MV induction cavity and validation of the two-dimensional circuit model

Applicability of the 1D Child–Langmuir relation for ion diode current calculation

Reducing the Axial Spot Size of a Rod-Pinch Diode by a Compound Cathode

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