Dynamic Control of Defective Gap Mode Through Defect Location

CHANG Lei (苌磊); LI Yinghong (李应红); WU Yun (吴云); ZHANG Huijie (张辉洁); WANG Weimin (王卫民); SONG Huimin (宋慧敏)

doi:10.1088/1009-0630/18/1/01

Plasma Science and Technology > 2016 > 18(1): 1-5. > DOI: 10.1088/1009-0630/18/1/01

CHANG Lei (苌磊), LI Yinghong (李应红), WU Yun (吴云), ZHANG Huijie (张辉洁), WANG Weimin (王卫民), SONG Huimin (宋慧敏). Dynamic Control of Defective Gap Mode Through Defect Location[J]. Plasma Science and Technology, 2016, 18(1): 1-5. DOI: 10.1088/1009-0630/18/1/01

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Dynamic Control of Defective Gap Mode Through Defect Location

1 Science and Technology on Plasma Dynamics Laboratory, Air Force Engineering University, Xi’an 710038, China 2 Department of Transfusion Medicine, Xijing Hospital, the Fourth Military Medical University, Xi’an 710032, China

Funds: supported by National Natural Science Foundation of China (No. 11405271)

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Received Date: August 23, 2015

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Abstract

Abstract

A one dimensional model is developed for defective gap mode (DGM) with two types of boundary conditions: conducting mesh and conducting sleeve. For a periodically modulated system without defect, the normalized width of spectral gaps equals to the modulation factor, which is consistent with previous studies. For a periodic system with local defects introduced by the boundary conditions, it shows that the conducting-mesh-induced DGM is always well confined by spectral gaps while the conducting-sleeve-induced DGM is not. The defect location can be a useful tool to dynamically control the frequency and spatial periodicity of DGM inside spectral gaps. This controllability can be potentially applied to the interaction between gap eigenmodes and energetic particles in fusion plasmas, and optical microcavities and waveguides in photonic crystals.
- defective gap mode,
- boundary condition,
- dynamic control,
- analytical model

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