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

C. D. Armstrong, C. M. Brenner, C. Jones, D. R. Rusby, Z. E. Davidson, Y. Zhang, J. Wragg, S. Richards, C. Spindloe, P. Oliveira, M. Notley, R. Clarke, S. R. Mirfayzi, S. Kar, Y. Li, T Scott, P. McKenna, D. Neely

Research output: Contribution to journalArticle

Abstract

Laser-solid interactions are highly suited as a potential source of high energy X-rays for non-destructive 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 (20 ± 3) µm 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.
LanguageEnglish
Number of pages8
JournalHigh Power Laser Science and Engineering
Publication statusAccepted/In press - 30 Jan 2019

Fingerprint

Industrial radiography
High power lasers
radiography
bremsstrahlung
high power lasers
X rays
x rays
interactions
x ray sources
Imaging techniques
sheaths
Solid state lasers
Radiography
foils
proportion
envelopes
Image quality
Metal foil
high resolution
pulses

Keywords

  • Bremsstrahlung
  • non-destructive imaging
  • radiography
  • x-ray
  • high powered laser

Cite this

Armstrong, C. D. ; 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. ; Neely, D. / Bremsstrahlung emission from high power laser interactions with constrained targets for industrial radiography. In: High Power Laser Science and Engineering. 2019.
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abstract = "Laser-solid interactions are highly suited as a potential source of high energy X-rays for non-destructive 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 (20 ± 3) µm 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.",
keywords = "Bremsstrahlung, non-destructive imaging, radiography, x-ray, high powered laser",
author = "Armstrong, {C. D.} and Brenner, {C. M.} and C. Jones and Rusby, {D. R.} and Davidson, {Z. E.} and Y. Zhang and J. Wragg and S. Richards and C. Spindloe and P. Oliveira and M. Notley and R. Clarke and Mirfayzi, {S. R.} and S. Kar and Y. Li and T Scott and P. McKenna and D. Neely",
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Armstrong, CD, Brenner, CM, Jones, C, Rusby, DR, Davidson, ZE, Zhang, Y, Wragg, J, Richards, S, Spindloe, C, Oliveira, P, Notley, M, Clarke, R, Mirfayzi, SR, Kar, S, Li, Y, Scott, T, McKenna, P & Neely, D 2019, 'Bremsstrahlung emission from high power laser interactions with constrained targets for industrial radiography' High Power Laser Science and Engineering.

Bremsstrahlung emission from high power laser interactions with constrained targets for industrial radiography. / Armstrong, C. D.; 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.; Neely, D.

In: High Power Laser Science and Engineering, 30.01.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Bremsstrahlung emission from high power laser interactions with constrained targets for industrial radiography

AU - Armstrong, C. D.

AU - Brenner, C. M.

AU - Jones, C.

AU - Rusby, D. R.

AU - Davidson, Z. E.

AU - Zhang, Y.

AU - Wragg, J.

AU - Richards, S.

AU - Spindloe, C.

AU - Oliveira, P.

AU - Notley, M.

AU - Clarke, R.

AU - Mirfayzi, S. R.

AU - Kar, S.

AU - Li, Y.

AU - Scott, T

AU - McKenna, P.

AU - Neely, D.

PY - 2019/1/30

Y1 - 2019/1/30

N2 - Laser-solid interactions are highly suited as a potential source of high energy X-rays for non-destructive 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 (20 ± 3) µm 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.

AB - Laser-solid interactions are highly suited as a potential source of high energy X-rays for non-destructive 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 (20 ± 3) µm 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.

KW - Bremsstrahlung

KW - non-destructive imaging

KW - radiography

KW - x-ray

KW - high powered laser

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T2 - High Power Laser Science and Engineering

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