The effect of energy stabilization of an ion beam formed by a self-magnetically insulated diode

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Abstract

The results of a study of the generation stability of intense pulsed ion beams, which are formed by a self-magnetically insulated diode with an explosive-emission cathode, are presented. Investigations were conducted using a TEMP-4M accelerator configured to operate in the bipolar pulse mode: the first pulse is negative (300–500 ns, 100–150 kV) and the second is positive (150 ns, 200–250 kV). Diodes of different designs were studied: strip focusing diodes, strip planar diodes, and conical focusing diodes. The total beam energy was measured using both the infrared-imaging diagnostics and a conventional calorimeter, while the beam-energy density was measured using the infrared-imaging and acoustic diagnostics. The anode design was modified to improve the ion-beam generation stability. It was obtained that the standard deviation of the total energy and beam-energy density in a pulse train does not exceed 10–11% for an amplitude instability of the ion-current-density pulse of >20–30%. The mechanism of the beam-energy-density stabilization in a pulse train, which is attributed to the ion-charge exchange and formation of accelerated neutrals, is presented. The sources of fluctuations in the total energy and ion-beam-energy density are analyzed. The long service life of ion diodes with self-magnetic insulation and an explosive-emission cathode (>106 pulses) and the high shot-to-shot beam-generation stability make these devices promising for various technological applications.

Original languageEnglish
Pages (from-to)90-97
Number of pages8
JournalInstruments and Experimental Techniques
Volume58
Issue number1
DOIs
Publication statusPublished - Jan 2015

Fingerprint

Ion beams
Diodes
Stabilization
stabilization
ion beams
diodes
flux density
pulses
Infrared imaging
shot
energy
strip
Ions
Cathodes
cathodes
service life
ion charge
Calorimeters
charge exchange
Service life

ASJC Scopus subject areas

  • Instrumentation

Cite this

The effect of energy stabilization of an ion beam formed by a self-magnetically insulated diode. / Pushkarev, A. I.; Isakova, Yu I.; Khailov, I. P.

In: Instruments and Experimental Techniques, Vol. 58, No. 1, 01.2015, p. 90-97.

Research output: Contribution to journalArticle

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