Abstract
X-rays generated by betatron oscillations of electrons in a laser-driven plasma accelerator were characterised and applied to imaging industrial samples. With a 125TW laser, a low divergence beam with 5.2±1.7 × 107photonsmrad−2 per pulse was produced with a synchrotron spectrum with a critical energy of 14.6±1.3keV. Radiographs were obtained of a metrology test sample, battery electrodes, and a damage site in a composite material. These results demonstrate the suitability of the source for non-destructive evaluation applications. The potential for industrial implementation of plasma accelerators is discussed.
| Original language | English |
|---|---|
| Article number | 164369 |
| Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
| Volume | 983 |
| Early online date | 10 Sept 2020 |
| DOIs | |
| Publication status | Published - 11 Dec 2020 |
| Externally published | Yes |
Bibliographical note
Funding Information:The authors thank the staff of the Central Laser Facility and the Science and Technology Facilities Council (STFC) Technology department for assistance with the experiment, and acknowledge helpful discussions with Ian Sinclair and his team at the ?-VIS X-ray Imaging Centre; Nick Brierley at the Manufacturing Technology Centre; Wenjuan Sun and Stephen Brown at the National Physical Laboratory. Authors from the National Composites Centre (NCC) and Warwick Manufacturing Group (WMG) thank the High Value Manufacturing Catapult for support. The John Adams Institute acknowledges support by STFC, UK [ST/P002021/1] and by the EU Horizon 2020 research and innovation programme grant No. 653782; CT was supported by an Engineering and Physical Sciences Research Council (EPSRC), UK Innovation Fellowship grant [EP/S001379/1]; LRP acknowledges support from EPSRC, UK through the Centre for Doctoral Training in Composites Manufacture [EP/K50323X/1] and by the NCC, UK. The TESCAN UniTom XL machine used for the CT scan in Figs. 2 and 3 was funded by EPSRC, UK Strategic Equipment ?High Speed CT? [EP/S010076/1]. The Nikon XTH-320 machine used for the CT scan in Fig. 4 was purchased under the EPSRC, UK ?Atoms to Applications? grant [EP/K035746/1].
Funding Information:
The John Adams Institute acknowledges support by STFC, UK [ ST/P002021/1 ] and by the EU Horizon 2020 research and innovation programme grant No. 653782 ; CT was supported by an Engineering and Physical Sciences Research Council (EPSRC), UK Innovation Fellowship grant [ EP/S001379/1 ]; LRP acknowledges support from EPSRC, UK through the Centre for Doctoral Training in Composites Manufacture [ EP/K50323X/1 ] and by the NCC, UK . The TESCAN UniTom XL machine used for the CT scan in Figs. 2 and 3 was funded by EPSRC, UK Strategic Equipment ‘High Speed CT’ [ EP/S010076/1 ]. The Nikon XTH-320 machine used for the CT scan in Fig. 4 was purchased under the EPSRC, UK ‘Atoms to Applications’ grant [ EP/K035746/1 ].
Publisher Copyright:
© 2020
Keywords
- Betatron radiation
- Femto-second X-ray imaging
- LPWA
- Novel industrial X-ray imaging
- Radiographs
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Instrumentation
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