Study of periodic surface profile on improving the window capacity at single and repetitive pulses

Liu, Y. S.; Zhang, X. W.; Zhang, Z. Q.; Shao, H.; Wang, Y.; Liu, W. Y.; Ke, C. F.; Chen, C. H.; Liang, Y. Q.; Wu, X. L.; Guo, L. T.

doi:10.1063/1.4930203

Title: Study of periodic surface profile on improving the window capacity at single and repetitive pulses

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Abstract

The surface breakdown of dielectric windows seriously limits the transmission of high power microwaves (HPM), and has blocked the development of microwave technology in recent decades. In this paper, X-band HPM experiments of window breakdown at the vacuum/dielectric interface and the atmosphere/dielectric interface at single and repetitive pulses were conducted. The cross-linked polystyrene (CLPS) dielectric window with a periodic surface profile can significantly improve the breakdown threshold at single and repetitive pulses. Furthermore, the flat surface layer of CLPS was discovered to be carbonized to a depth of several millimeters and filled with electrical trees at repetitive pulses. Theoretical models were built to understand the underlying physics behind the phenomena in experiments. With the analysis of the electron resonance process breaking the molecular bond and the temperature rise caused by the traversing current in the dielectric material, a microscopic explanation for the carbonization of the dielectric window was introduced.

Authors:

Liu, Y. S.; Zhang, X. W.; Zhang, Z. Q.; Shao, H.; Wang, Y.; Liu, W. Y.; Ke, C. F.; Chen, C. H.; Liang, Y. Q.; Wu, X. L.; Guo, L. T. ^[1]

Science and Technology on High Power Microwave Laboratory, Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024 (China)

Publication Date:: Tue Sep 15 00:00:00 EDT 2015

OSTI Identifier:: 22493776

Resource Type:: Journal Article

Journal Name:: Physics of Plasmas

Additional Journal Information:: Journal Volume: 22; Journal Issue: 9; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X

Country of Publication:: United States

Language:: English

Subject:: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BREAKDOWN; CAPACITY; CARBONIZATION; CURRENTS; DIELECTRIC MATERIALS; ELECTRONS; LAYERS; MICROWAVE RADIATION; PERIODICITY; POLYSTYRENE; PULSES; RESONANCE; SURFACE PROPERTIES; TRANSMISSION

Citation Formats


                    Liu, Y. S., Zhang, X. W., Zhang, Z. Q., Shao, H., Wang, Y., Liu, W. Y., Ke, C. F., Chen, C. H., Liang, Y. Q., Wu, X. L., Guo, L. T., Chang, C., E-mail: chang@slac.stanford.edu, and Key Laboratory of Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an, Shaanxi 710049. Study of periodic surface profile on improving the window capacity at single and repetitive pulses.  United States: N. p., 2015. 
        Web.  doi:10.1063/1.4930203.

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                    Liu, Y. S., Zhang, X. W., Zhang, Z. Q., Shao, H., Wang, Y., Liu, W. Y., Ke, C. F., Chen, C. H., Liang, Y. Q., Wu, X. L., Guo, L. T., Chang, C., E-mail: chang@slac.stanford.edu, & Key Laboratory of Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an, Shaanxi 710049. Study of periodic surface profile on improving the window capacity at single and repetitive pulses.  United States.  https://doi.org/10.1063/1.4930203

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                    Liu, Y. S., Zhang, X. W., Zhang, Z. Q., Shao, H., Wang, Y., Liu, W. Y., Ke, C. F., Chen, C. H., Liang, Y. Q., Wu, X. L., Guo, L. T., Chang, C., E-mail: chang@slac.stanford.edu, and Key Laboratory of Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an, Shaanxi 710049. 2015.  
        "Study of periodic surface profile on improving the window capacity at single and repetitive pulses".  United States.  https://doi.org/10.1063/1.4930203.

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@article{osti_22493776,

  title        = {Study of periodic surface profile on improving the window capacity at single and repetitive pulses},

  author       = {Liu, Y. S. and Zhang, X. W. and Zhang, Z. Q. and Shao, H. and Wang, Y. and Liu, W. Y. and Ke, C. F. and Chen, C. H. and Liang, Y. Q. and Wu, X. L. and Guo, L. T. and Chang, C., E-mail: chang@slac.stanford.edu and Key Laboratory of Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an, Shaanxi 710049},

  abstractNote = {The surface breakdown of dielectric windows seriously limits the transmission of high power microwaves (HPM), and has blocked the development of microwave technology in recent decades. In this paper, X-band HPM experiments of window breakdown at the vacuum/dielectric interface and the atmosphere/dielectric interface at single and repetitive pulses were conducted. The cross-linked polystyrene (CLPS) dielectric window with a periodic surface profile can significantly improve the breakdown threshold at single and repetitive pulses. Furthermore, the flat surface layer of CLPS was discovered to be carbonized to a depth of several millimeters and filled with electrical trees at repetitive pulses. Theoretical models were built to understand the underlying physics behind the phenomena in experiments. With the analysis of the electron resonance process breaking the molecular bond and the temperature rise caused by the traversing current in the dielectric material, a microscopic explanation for the carbonization of the dielectric window was introduced.},

  doi          = {10.1063/1.4930203},

  url          = {https://www.osti.gov/biblio/22493776},
  journal      = {Physics of Plasmas},

  issn         = {1070-664X},

  number       = 9,

  volume       = 22,

  place        = {United States},

  year         = {Tue Sep 15 00:00:00 EDT 2015},

  month        = {Tue Sep 15 00:00:00 EDT 2015}

}

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