| Autor: |
Finlay, O J, Gruse, J-N, Thornton, C, Allott, R, Armstrong, C D, Baird, C D, Bourgeois, N, Brenner, C, Cipiccia, S, Cole, J M, Gregory, C, Jamison, S, Katzir, Y, Lopes, N C, Mangles, S P D, Murphy, C D, Najmudin, Z, Neely, D, Pickard, L R, Potter, K D |
| Předmět: |
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| Zdroj: |
Plasma Physics & Controlled Fusion; Aug2021, Vol. 63 Issue 8, p1-7, 7p |
| Abstrakt: |
We report on the characterisation of an x-ray source, generated by a laser-driven plasma wakefield accelerator. The spectrum of the optimised source was consistent with an on-axis synchrotron spectrum with a critical energy of keV and the number of photons per pulse generated above 1 keV was calculated to be. The x-ray beam was used to image a resolution grid placed 37 cm from the source, which gave a measured spatial resolution of 4 µm × 5 µm. The inferred emission region had a radius and length of 0.5 ± 0.2 µm and 3.2 ± 0.9 mm respectively. It was also observed that laser damage to the exit aperture of the gas cell led to a reduction in the accelerated electron beam charge and a corresponding reduction in x-ray flux due to the change in the plasma density profile. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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