The effect of multiple current spikes on the enhancement of ioncharges states of vacuum arc plasmas
Journal Article
·
· Journal of Applied Physics
OSTI ID:877602
Ion charge state distributions of vacuum arc ion sources are correlated to the arc operating voltage. Recent research has shown that an enhancement of ion charges via an increase of the arc voltage can be achieved utilizing the transient processes that accompany an arc current spike. The idea investigated is to further enhance the ion charge states by multiple current pulses. It is shown that although the ion charge states are enhanced compared to quasi-dc operation, the application of a sequence of pulses does not lead to the desired additional increase in charge states. This can be attributed to the additional plasma production that is caused by higher arc currents: The additional power supplied to the plasma is distributed over a larger number of plasma particles. One can expect that in the limiting case of many current spikes, the ion charges state distribution approaches the one known for arc plasmas at higher discharge current.
- Research Organization:
- Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
- Sponsoring Organization:
- USDOE. Administrator for the National Nuclear SecurityAdministration. Nonproliferation and National Security Program Direction; Russian Foundation for Basic Research, under Grant No.99-02-18163.
- DOE Contract Number:
- AC02-05CH11231
- OSTI ID:
- 877602
- Report Number(s):
- LBNL--44568; BnR: NN4101010
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 12 Vol. 87; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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