Commissioning of a laser-plasma x-ray micro-focus source for phase contrast imaging

L. MartÍn; J. Benlliure; D. Cortina; D. Gonzales; J. J. Llerena; J. Peña; C. Ruiz

doi:10.1117/12.2520952

24 April 2019 Commissioning of a laser-plasma x-ray micro-focus source for phase contrast imaging

L. MartÍn, J. Benlliure, D. Cortina, D. Gonzales, J. J. Llerena, J. Peña, C. Ruiz

Proceedings Volume 11036, Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources III; 110360J (2019) https://doi.org/10.1117/12.2520952
Event: SPIE Optics + Optoelectronics, 2019, Prague, Czech Republic

Abstract

Development of laser-plasma X-ray sources provides a new route to high brightness and small source size somewhere in the middle of low cost micro-focus X-rays and large scale synchrotron facilities. We explore one application of this new type of sources with emphasis on the stability of the source at high repetition rate and the advantage over similar conventional sources. In this paper we report the development and application of a micro-focus X-ray source for phase contrast imaging. The X-ray source produced at the Laser Laboratory for Acceleration and Applications (L2A2) of the University of Santiago de Compostela (USC), is made by focusing a 1 mJ, 35 fs, 1kHz pulses at 800 nm wavelength on metallic plates close to the diffraction limit. The X-ray spectra of this source are characterized by the K-α peaks which can be 'tuned' by changing the target material and a Bremsstrahlung continuum up to several tens of keV. The stability of the source is achieved by optimizing the positioning system of the metallic target which refresh and keep the surface within the small the Rayleigh length allowing the development of applications.

Conference Presentation

Citation Download Citation

L. MartÍn, J. Benlliure, D. Cortina, D. Gonzales, J. J. Llerena, J. Peña, and C. Ruiz "Commissioning of a laser-plasma x-ray micro-focus source for phase contrast imaging", Proc. SPIE 11036, Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources III, 110360J (24 April 2019); https://doi.org/10.1117/12.2520952

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