Single-shot multi-keV X-ray absorption spectroscopy using an ultrashort laser-wakefield accelerator source

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F19%3A00519638" target="_blank" >RIV/68378271:_____/19:00519638 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1103/physrevlett.123.254801" target="_blank" >https://doi.org/10.1103/physrevlett.123.254801</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevLett.123.254801" target="_blank" >10.1103/PhysRevLett.123.254801</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Single-shot multi-keV X-ray absorption spectroscopy using an ultrashort laser-wakefield accelerator source

Popis výsledku v původním jazyce

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 1GeV and a broad divergence of ≈15 mrad FWHM. Betatron oscillations of these electrons generated 1.2 × 106 photons/eV in the 5 keV region, with a signal-to-noise ratio of approximately 300∶1. 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.

Název v anglickém jazyce

Single-shot multi-keV X-ray absorption spectroscopy using an ultrashort laser-wakefield accelerator source

Popis výsledku anglicky

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 1GeV and a broad divergence of ≈15 mrad FWHM. Betatron oscillations of these electrons generated 1.2 × 106 photons/eV in the 5 keV region, with a signal-to-noise ratio of approximately 300∶1. 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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review Letters

ISSN

0031-9007

e-ISSN

—

Svazek periodika

123

Číslo periodika v rámci svazku

25

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

1-6

Kód UT WoS článku

000503050000007

EID výsledku v databázi Scopus

2-s2.0-85077270863