@article{Kettle:2019:10.1103/physrevlett.123.254801,
author = {Kettle, B and Gerstmayr, E and Streeter, MJV and Albert, F and Baggott, RA and Bourgeois, N and Cole, JM and Dann, S and Falk, K and Gallardo, González I and Hussein, AE and Lemos, N and Lopes, NC and Lundh, O and Ma, Y and Rose, SJ and Spindloe, C and Symes, DR and míd, M and Thomas, AGR and Watt, R and Mangles, SPD},
doi = {10.1103/physrevlett.123.254801},
journal = {Physical Review Letters},
pages = {254801--1--254801--6},
title = {Single-shot multi-keV X-ray absorption spectroscopy using an ultrashort laser-wakefield accelerator source},
url = {http://dx.doi.org/10.1103/physrevlett.123.254801},
volume = {123},
year = {2019}
}

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TY  - JOUR
AB  - Single-shot absorption measurements have been performed using the multi-keV x rays generated by a laser-wakefield accelerator. A 200 TW laser was used to drive a laser-wakefield accelerator in a mode which produced broadband electron beams with a maximum energy above 1 GeV and a broad divergence of ≈15  mrad FWHM. Betatron oscillations of these electrons generated 1.2±0.2×106  photons/eV in the 5 keV region, with a signal-to-noise ratio of approximately 3001. This was sufficient to allow high-resolution x-ray absorption near-edge structure measurements at the K edge of a titanium sample in a single shot. We demonstrate that this source is capable of single-shot, simultaneous measurements of both the electron and ion distributions in matter heated to eV temperatures by comparison with density functional theory simulations. The unique combination of a high-flux, large bandwidth, few femtosecond duration x-ray pulse synchronized to a high-power laser will enable key advances in the study of ultrafast energetic processes such as electron-ion equilibration.
AU  - Kettle,B
AU  - Gerstmayr,E
AU  - Streeter,MJV
AU  - Albert,F
AU  - Baggott,RA
AU  - Bourgeois,N
AU  - Cole,JM
AU  - Dann,S
AU  - Falk,K
AU  - Gallardo,González I
AU  - Hussein,AE
AU  - Lemos,N
AU  - Lopes,NC
AU  - Lundh,O
AU  - Ma,Y
AU  - Rose,SJ
AU  - Spindloe,C
AU  - Symes,DR
AU  - míd,M
AU  - Thomas,AGR
AU  - Watt,R
AU  - Mangles,SPD
DO  - 10.1103/physrevlett.123.254801
EP  - 1
PY  - 2019///
SN  - 0031-9007
SP  - 254801
TI  - Single-shot multi-keV X-ray absorption spectroscopy using an ultrashort laser-wakefield accelerator source
T2  - Physical Review Letters
UR  - http://dx.doi.org/10.1103/physrevlett.123.254801
UR  - https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.254801
UR  - http://hdl.handle.net/10044/1/75729
VL  - 123
ER  - 

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