Non-thermal structural transformation of diamond driven by x-rays

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F23%3A00584066" target="_blank" >RIV/61389021:_____/23:00584066 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/23:00584107

Výsledek na webu

<a href="https://pubs.aip.org/aca/sdy/article/10/5/054502/2918950/Non-thermal-structural-transformation-of-diamond" target="_blank" >https://pubs.aip.org/aca/sdy/article/10/5/054502/2918950/Non-thermal-structural-transformation-of-diamond</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/4.0000193" target="_blank" >10.1063/4.0000193</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Non-thermal structural transformation of diamond driven by x-rays

Popis výsledku v původním jazyce

Intense x-ray pulses can cause the non-thermal structural transformation of diamond. At the SACLA XFEL facility, pump x-ray pulses triggered this phase transition, and probe x-ray pulses produced diffraction patterns. Time delays were observed from 0 to 250 fs, and the x-ray dose varied from 0.9 to 8.0 eV/atom. The intensity of the (111), (220), and (311) diffraction peaks decreased with time, indicating a disordering of the crystal lattice. From a Debye-Waller analysis, the rms atomic displacements perpendicular to the (111) planes were observed to be significantly larger than those perpendicular to the (220) or (311) planes. At a long time delay of 33 ms, graphite (002) diffraction indicates that graphitization did occur above a threshold dose of 1.2 eV/atom. These experimental results are in qualitative agreement with XTANT+ simulations using a hybrid model based on density-functional tight-binding molecular dynamics.

Název v anglickém jazyce

Non-thermal structural transformation of diamond driven by x-rays

Popis výsledku anglicky

Intense x-ray pulses can cause the non-thermal structural transformation of diamond. At the SACLA XFEL facility, pump x-ray pulses triggered this phase transition, and probe x-ray pulses produced diffraction patterns. Time delays were observed from 0 to 250 fs, and the x-ray dose varied from 0.9 to 8.0 eV/atom. The intensity of the (111), (220), and (311) diffraction peaks decreased with time, indicating a disordering of the crystal lattice. From a Debye-Waller analysis, the rms atomic displacements perpendicular to the (111) planes were observed to be significantly larger than those perpendicular to the (220) or (311) planes. At a long time delay of 33 ms, graphite (002) diffraction indicates that graphitization did occur above a threshold dose of 1.2 eV/atom. These experimental results are in qualitative agreement with XTANT+ simulations using a hybrid model based on density-functional tight-binding molecular dynamics.

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

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Structural Dynamics

ISSN

2329-7778

e-ISSN

2329-7778

Svazek periodika

10

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

054502

Kód UT WoS článku

001094050700001

EID výsledku v databázi Scopus

2-s2.0-85175539646