Bremsstrahlung emission from high power laser interactions with constrained targets for industrial radiography

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Armstrong, C. D. and Brenner, C. M. and Jones, C. and Rusby, D. R. and Davidson, Z. E. and Zhang, Y. and Wragg, J. and Richards, S. and Spindloe, C. and Oliveira, P. and Notley, M. and Clarke, R. and Mirfayzi, S. R. and Kar, S. and Li, Y. and Scott, T and McKenna, P. and Neely, D. (2019) Bremsstrahlung emission from high power laser interactions with constrained targets for industrial radiography. High Power Laser Science and Engineering, 7. e24. ISSN 2052-3289 (https://doi.org/10.1017/hpl.2019.8)

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Abstract

Laser-solid interactions are highly suited as a potential source of high energy X-rays for nondestructive imaging. A bright, energetic X-ray pulse can be driven from a small source, making it ideal for high resolution X-ray radiography. By limiting the lateral dimensions of the target we are able to confine the region over which X-rays are produced, enabling imaging with enhanced resolution and contrast. Using constrained targets we demonstrate experimentally a X-ray source, improving the image quality compared to unconstrained foil targets. Modelling demonstrates that a larger sheath field envelope around the perimeter of the constrained targets increases the proportion of electron current that recirculates through the target, driving a brighter source of X-rays.

ORCID iDs

Armstrong, C. D. ORCID logoORCID: https://orcid.org/0000-0003-2083-8487, Brenner, C. M., Jones, C., Rusby, D. R., Davidson, Z. E., Zhang, Y., Wragg, J., Richards, S., Spindloe, C., Oliveira, P., Notley, M., Clarke, R., Mirfayzi, S. R., Kar, S., Li, Y., Scott, T, McKenna, P. ORCID logoORCID: https://orcid.org/0000-0001-8061-7091 and Neely, D.;
  • Item type:Article
    ID code:66810
    Dates:
    Date
    Event
    25 April 2019
    Published
    25 April 2019
    Published Online
    30 January 2019
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:05 Feb 2019 09:27
    Last modified:26 Nov 2024 01:13
    URI:https://strathprints.strath.ac.uk/id/eprint/66810
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