Record Details

Title:
Soft x-ray induced femtosecond solid-to-solid phase transition
Affiliation(s):
EuXFEL staff, Other
Author group:
Simulation of Photon Fields
Keyword(s):
Topic:
Scientific area:
Abstract:
Soft x-rays were applied to induce graphitization of diamond through a non-thermal solid-to-solid phase transition. This process was observed within poly-crystalline diamond with a time-resolved experiment using ultrashort soft x-ray pulses of duration 52.5 fs and cross correlated by an optical pulse of duration 32.8 fs. This scheme enabled for the first time the measurement of a phase transition on a timescale of ∼150 fs. Excellent agreement between experiment and theoretical predictions was found, using a dedicated code that followed the non-equilibrium evolution of the irradiated diamond including all transient electronic and structural changes. These observations confirm that soft x-rays can induce a non-thermal ultrafast solid-to-solid phase transition on a hundred femtosecond timescale.
Imprint:
2017
Journal Information:
High Energy Density Physics, 24, 22-27 (2017)
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Language(s):
English


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 Record created 2018-01-11, last modified 2019-01-30

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