Development of long-lifetime cold cathodes

Bykov, N. M.; Gubanov, V. P.; Gunin, A. V.; Korovin, S. D.; Кутенков, О. П.; Landl, V.F.; Polevin, S. D.; Ростов, В. В.; Mesyats, G.; Zagulov, F. Ya.

doi:10.1109/ppc.1995.596457

Cited by 15 publications

(3 citation statements)

References 1 publication

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“…The cathode has shown no signs of significant physical damage at greater than 3x106 shots. This is consistent with results from IHCE where greater than 10' shots at similar current densities have been demonstrated without significant damage [2].…”

Section: Introductionsupporting

confidence: 90%

Status of repetitive pulsed power at Sandia National Laboratories

Schneider

Reed

Harjes

et al.

Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358)

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Multi-kilojoule repetitive pulsed power technology moved from a laboratory environment into its first commercial application in 1997 as a driver for ion beam surface treatment. Sandia's RHEPP 11, a repetitive 2.5 kJ/pulse electron beam accelerator, has supported the development of radiation treatment processes for polymers and elastomers, food products, and high doserate effects testing for defense programs since early 1996. Dos Lineas, an all solid-state testbed, has demonstrated synchronization techniques for parallel magnetic modulator systems and is continuing the development of design standards for long lifetime magnetic switches and voltage adders at a shot rate capability that exceeds 5x106 pulses per day. This paper will describe progress in multi-kilojoule class repetitive pulsed power technology development, limitations of magnetic switching technology for accelerator and modulator applications, and future research and development directions.weapons, and fusion energy sources will require cost effective RHEPP class systems. Applications such as compact portable pulsed power sources, large-scale KrF laser drivers for inertial confinement fusion, and burstmode pulsed power systems for advanced hydrodynamic radiography will continue to drive the development of RHEPP technology. Although magnetic switching has matured to the point of being a credible solution for many applications, new concepts will be required in the future to reduce the size, weight, and cost of RHEPP class systems. PROGRESS IN MAGNETIC SYSTEMS A. Repetitive Pulsed Accelerator TechnologyThe RHEPP I1 accelerator system, shown in Fig. 1, has demonstrated the capabilities of magnetic switching and repetitive Linear Induction Voltage Adders (LIVA's) to be a reliable technology for producing multi-kilojoule pulsed electron beams at high average power levels.

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Section: Introductionsupporting

confidence: 90%

Status of repetitive pulsed power at Sandia National Laboratories

Schneider

Reed

Harjes

et al.

Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358)

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“…They also concluded that the electrophysical properties of the cathode materials only slightly affected the emissive properties of the cathodes. The emissive properties of the cathodes which had ceased could also be recovered by deevacuating and then evacuating the working space [12].…”

Section: Cathode Plasma Process In Eeementioning

confidence: 99%

“…We think that the difference between experiments in the literature [6][7][8][9] and the ones in [10][11][12] stems from the different experimental conditions. The microprotrusion model in [6][7][8][9] could describe the EECs that are carefully cleaned and operated in high, oil-free vacuum conditions, hence the simulations based on the model in [13] are in good consistence with the experimental results.…”

Section: Cathode Plasma Process In Eeementioning

confidence: 99%

Research on an improved explosive emission cathode

Liu¹,

Sun²,

Shao³

et al. 2009

J. Phys. D: Appl. Phys.

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This paper presents a physical description of the cathode plasma process of an explosive emission cathode (EEC) and experimental results on a type of oil-immersed graphite EEC. It is believed that the generation of a cathode plasma is mainly dependent on the state of the cathode surface, and that adsorbed gases and dielectrics on the cathode surface play a leading role in the formation of the cathode plasma. Based on these ideas, a type of oil-immersed graphite EEC is proposed and fabricated. The experiments indicate that the oil-immersed cathodes have improved emissive properties and longer lifetimes.

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