Investigating the damage threshold of X-ray mirror B4C-coated/Si-substrate) at grazing incidence and determining electron collision length at 1keV at the European XFEL

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00637916" target="_blank" >RIV/68378271:_____/25:00637916 - isvavai.cz</a>

Alternative codes found

RIV/61389021:_____/25:00647873

Result on the web

<a href="https://www.spiedigitallibrary.org/conference-proceedings-of-spie/13533/3058267/Investigating-the-damage-threshold-of-x-ray-mirror-B4C-coated/10.1117/12.3058267.short" target="_blank" >https://www.spiedigitallibrary.org/conference-proceedings-of-spie/13533/3058267/Investigating-the-damage-threshold-of-x-ray-mirror-B4C-coated/10.1117/12.3058267.short</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.3058267" target="_blank" >10.1117/12.3058267</a>

Result language

angličtina

Original language name

Investigating the damage threshold of X-ray mirror B4C-coated/Si-substrate) at grazing incidence and determining electron collision length at 1keV at the European XFEL

Original language description

X-ray Free Electron Laser (XFEL) facilities provide significant advantages over conventional X-ray sources, generating ultra-intense pulses beyond mJ/pulse, with exceptionally high peak power, ultrashort pulse durations in the femtosecond range, and spectral bandwidths of just a few tens of eV. At the European XFEL, a total of up to 27,000 X-ray pulses are delivered every second at a repetition rate of 4.5MHz. Such capabilities enable groundbreaking scientific applications but also pose serious challenges- particularly the risk of optical component damage and beam quality degradation. For X-ray transport mirrors, boron carbide (B4C) coatings are widely used in moderate photon energy ranges due to their excellent thermal properties, high melting point, low density, and low atomic number. This study focuses on evaluating the damage threshold of B4C coatings on silicon substrates under soft X-ray FEL pulses at grazing incidence angles. Experiments were conducted at the SQS instrument of the European XFEL. A key parameter that influences damage thresholds is the electron collision length, as femtosecond pulse events enable energy transport beyond the absorption layer. Our findings indicate an electron collision length of approximately 8.6nm for the B4C coating, pointing to superior heat dissipation and higher radiation tolerance. These insights are vital for designing resilient optics suited to XFEL demands, advancing ultrafast and high intensity X-ray science.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

<a href="/en/project/LM2023068" target="_blank" >LM2023068: Prague Asterix Laser System</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Article name in the collection

Optics Damage and Materials Processing by EUV/X-ray Radiation (XDam9)

ISBN

—

ISSN

0277-786X

e-ISSN

—

Number of pages

5

Pages from-to

1353303

Publisher name

SPIE

Place of publication

Bellingham

Event location

Prague

Event date

Apr 7, 2025

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

001559199900002