Explosive Emission Cathode Based on a Carbon Fiber for Long-Term Pulsed-Periodic Mode of Operation and its Application in a High-Power Microwave Pulse Generator Without External Magnetic Field

Кутенков, О. П.; Pegel, I. V.; Totmeninov, E. M.

doi:10.1007/s11182-014-0277-8

Cited by 5 publications

(1 citation statement)

References 15 publications

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“…With an increase in the number of pulses, the emissivity of the gap decreases, as a result, an increase in the impedance of the electron diode and a change in the operating mode of the accelerating voltage pulse generator. The reason for this is, as a rule, a change in the morphology and properties of the material of the cathode emitting surface [6][7][8]. One of the original ways to ensure the emissivity of the cathode is the use of a consumable for plasma formation, for example, liquid metal [9] or distilled water [10] stored in the cathode tank.…”

Section: Introductionmentioning

confidence: 99%

Testing of the water supplying system for the cathode of a vacuum electron diode

Egorov¹,

Serebrennikov²,

Poloskov³

2022

8th International Congress on Energy Fluxes and Radiation Effects

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An increase in the number of examples of the use of pulsed electron accelerators as sources of ionizing radiation stimulates the development of accelerator technology. One of the nodes that require the attention of researchers and developers of high-power pulsed accelerators is the electron emitter, the cathode. Research in this direction is being carried out both to improve the emission characteristics and to increase the lifetime and operational characteristics of the assembly. One of the original developments is the use of a liquid injected into the accelerating gap as a substance for plasma formation. This work is devoted to testing the system of external liquid supply to the cathode of a vacuum electron diode. The change in the vacuum conditions in the diode during the injection of water is studied. The system is tested when a high voltage pulse is applied to the cathode. The values of water flow rates at which frostbite occurs by the injection system are established. Based on the research results, conclusions were made about the required characteristics of the liquid during injection into the accelerating gap of the vacuum electron diode of a pulsed submicrosecond accelerator.

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