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Novel scintillator-based x-ray spectrometer for use on high repetition laser plasma interaction experiments

Rusby, D. R. and Armstrong, C. D. and Brenner, C. M. and Clarke, R. J. and McKenna, P. and Neely, D. (2018) Novel scintillator-based x-ray spectrometer for use on high repetition laser plasma interaction experiments. Review of Scientific Instruments, 89 (7). ISSN 1089-7623

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    The characterisation of x-rays from laser-plasma interactions is of utmost importance as they can be useful for both monitoring electron dynamics and also applications in an industrial capacity. A novel versatile scintillator x-ray spectrometer diagnostic that is capable of single shot measurements of x-rays produced from laser-plasma interactions is presented here. Examples of the design and extraction of the temperature of the spectrum of x-rays produced in an intense laser-solid interaction (479 ± 39 keV) and the critical energy from a betatron source (30 ± 10 keV) are discussed. Finally, a simple optimisation process involving adjusting the scintillator thickness for a particular range of input spectra is demonstrated.