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**Harvard**

Rasch, J., Semenov, V., Rakova, E., Anderson, D., Johansson, J., Lisak, M. och Puech, J. (2011) *Simulations of Multipactor Breakdown Between Two Cylinders*.

** BibTeX **

@article{

Rasch2011,

author={Rasch, Joel and Semenov, V. E. and Rakova, E. and Anderson, Dan and Johansson, J. F. and Lisak, Mietek and Puech, J.},

title={Simulations of Multipactor Breakdown Between Two Cylinders},

journal={IEEE Transactions on Plasma Science},

issn={0093-3813},

volume={39},

issue={9},

pages={1786-1794},

abstract={Simulations have been performed to determine the multipactor breakdown threshold in a microwave structure composed of two parallel cylinders, chosen to be an approximate model of an open helix microwave antenna system. The electromagnetic field between the cylinders is available in closed analytical form, and a Monte Carlo software has been developed to calculate the 2-D electron trajectories and to simulate the multipactor avalanche in this inhomogeneous electric field for different ratios of cylinder radius and distance of separation between the cylinders. The results are compared with those of a recently published analytical theory and show a qualitatively good agreement. In particular, it is confirmed that, for a given distance between cylinders, there exists a smallest cylinder radius below which no two-sided multipactor breakdown can occur. The basic physical explanation is a loss mechanism for secondary emitted electrons that is caused by the curvature of the cylinder surfaces together with the strong electric field at the surfaces. The results imply that the breakdown threshold in realistic open helix antennas is significantly higher than those predicted using extrapolations based on resonance theory and the classical two parallel plate model.},

year={2011},

keywords={Helix antenna, microwave breakdown, multipactor, hollow wave-guides, 2-sided multipactor},

}

** RefWorks **

RT Journal Article

SR Electronic

ID 147332

A1 Rasch, Joel

A1 Semenov, V. E.

A1 Rakova, E.

A1 Anderson, Dan

A1 Johansson, J. F.

A1 Lisak, Mietek

A1 Puech, J.

T1 Simulations of Multipactor Breakdown Between Two Cylinders

YR 2011

JF IEEE Transactions on Plasma Science

SN 0093-3813

VO 39

IS 9

SP 1786

OP 1794

AB Simulations have been performed to determine the multipactor breakdown threshold in a microwave structure composed of two parallel cylinders, chosen to be an approximate model of an open helix microwave antenna system. The electromagnetic field between the cylinders is available in closed analytical form, and a Monte Carlo software has been developed to calculate the 2-D electron trajectories and to simulate the multipactor avalanche in this inhomogeneous electric field for different ratios of cylinder radius and distance of separation between the cylinders. The results are compared with those of a recently published analytical theory and show a qualitatively good agreement. In particular, it is confirmed that, for a given distance between cylinders, there exists a smallest cylinder radius below which no two-sided multipactor breakdown can occur. The basic physical explanation is a loss mechanism for secondary emitted electrons that is caused by the curvature of the cylinder surfaces together with the strong electric field at the surfaces. The results imply that the breakdown threshold in realistic open helix antennas is significantly higher than those predicted using extrapolations based on resonance theory and the classical two parallel plate model.

LA eng

DO 10.1109/tps.2011.2159997

LK http://publications.lib.chalmers.se/records/fulltext/147332/local_147332.pdf

LK http://dx.doi.org/10.1109/tps.2011.2159997

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