Imperial College London
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DrJackHare

Faculty of Natural Sciences, Department of Physics

Academic Visitor
 
 
 
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Contact

 

+44 (0)20 7594 5659jdhare CV

 
 
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Location

 

739BBlackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Swadling:2016:10.1063/1.4948279,
author = {Swadling, GF and Lebedev, SV and Hall, GN and Suzuki-Vidal, F and Burdiak, GC and Pickworth, L and De, Grouchy P and Skidmore, J and Khoory, E and Suttle, L and Bennett, M and Hare, JD and Clayson, T and Bland, SN and Smith, RA and Stuart, NH and Patankar, S and Robinson, TS and Harvey-Thompson, AJ and Rozmus, W and Yuan, J and Sheng, L},
doi = {10.1063/1.4948279},
journal = {Physics of Plasmas},
title = {Experimental investigations of ablation stream interaction dynamics in tungsten wire arrays: interpenetration, magnetic field advection, and ion deflection},
url = {http://dx.doi.org/10.1063/1.4948279},
volume = {23},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Experiments have been carried out to investigate the collisional dynamics of ablation streams produced by cylindrical wire array z-pinches. A combination of laser interferometric imaging, Thomson scattering, and Faraday rotationimaging has been used to make a range of measurements of the temporal evolution of various plasma and flow parameters. This paper presents a summary of previously published data, drawing together a range of different measurements in order to give an overview of the key results. The paper focuses mainly on the results of experiments with tungsten wire arrays. Early interferometric imagingmeasurements are reviewed, then more recent Thomson scattering measurements are discussed; these measurements provided the first direct evidence of ablation stream interpenetration in a wire array experiment. Combining the data from these experiments gives a view of the temporal evolution of the tungsten stream collisional dynamics. In the final part of the paper, we present new experimental measurements made using an imagingFaraday rotationdiagnostic. These experiments investigated the structure of magnetic fields near the array axis directly; the presence of a magnetic field has previously been inferred based on Thomson scattering measurements of ion deflection near the array axis. Although the Thomson and Faradaymeasurements are not in full quantitative agreement, the Faraday data do qualitatively supports the conjecture that the observed deflections are induced by a static toroidal magnetic field, which has been advected to the array axis by the ablation streams. It is likely that detailed modeling will be needed in order to fully understand the dynamics observed in the experiment.
AU  - Swadling,GF
AU  - Lebedev,SV
AU  - Hall,GN
AU  - Suzuki-Vidal,F
AU  - Burdiak,GC
AU  - Pickworth,L
AU  - De,Grouchy P
AU  - Skidmore,J
AU  - Khoory,E
AU  - Suttle,L
AU  - Bennett,M
AU  - Hare,JD
AU  - Clayson,T
AU  - Bland,SN
AU  - Smith,RA
AU  - Stuart,NH
AU  - Patankar,S
AU  - Robinson,TS
AU  - Harvey-Thompson,AJ
AU  - Rozmus,W
AU  - Yuan,J
AU  - Sheng,L
DO  - 10.1063/1.4948279
PY  - 2016///
SN  - 1089-7674
TI  - Experimental investigations of ablation stream interaction dynamics in tungsten wire arrays: interpenetration, magnetic field advection, and ion deflection
T2  - Physics of Plasmas
UR  - http://dx.doi.org/10.1063/1.4948279
UR  - http://hdl.handle.net/10044/1/32601
VL  - 23
ER  -
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