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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" article-type="brief-report" specific-use="SMUR" dtd-version="3.0" xml:lang="en">
<front>
<journal-meta>
<journal-id journal-id-type="publisher">EGUsphere</journal-id>
<journal-title-group>
<journal-title>EGUsphere</journal-title>
<abbrev-journal-title abbrev-type="publisher">EGUsphere</abbrev-journal-title>
<abbrev-journal-title abbrev-type="nlm-ta">EGUsphere</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub"></issn>
<publisher><publisher-name>Copernicus Publications</publisher-name>
<publisher-loc>Göttingen, Germany</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.5194/egusphere-2026-4182</article-id>
<title-group>
<article-title>Brief communication: Ambient-pressure femtosecond laser ablation as a solid-phase sampling method for water ice</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Nielsen</surname>
<given-names>Robin Vinther</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Bertsia-Kanatouri</surname>
<given-names>Ioanna</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Peensoo</surname>
<given-names>Kerttu Maria</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Fassel</surname>
<given-names>Simon Alexander Munk Wael</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Malegiannaki</surname>
<given-names>Eirini</given-names>
<ext-link>https://orcid.org/0000-0001-8302-3686</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Gkinis</surname>
<given-names>Vasileios</given-names>
<ext-link>https://orcid.org/0000-0002-5910-1549</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Niels Bohr Institute, University of Copenhagen</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>now at: Second Sun ApS</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>now at: Helmholtz Centre for Polar and Marine Research, Alfred Wegener Institute</addr-line>
</aff>
<pub-date pub-type="epub">
<day>30</day>
<month>07</month>
<year>2026</year>
</pub-date>
<volume>2026</volume>
<fpage>1</fpage>
<lpage>14</lpage>
<permissions>
<copyright-statement>Copyright: &#x000a9; 2026 Robin Vinther Nielsen et al.</copyright-statement>
<copyright-year>2026</copyright-year>
<license license-type="open-access">
<license-p>This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this licence, visit <ext-link ext-link-type="uri"  xlink:href="https://creativecommons.org/licenses/by/4.0/">https://creativecommons.org/licenses/by/4.0/</ext-link></license-p>
</license>
</permissions>
<self-uri xlink:href="https://egusphere.copernicus.org/preprints/2026/egusphere-2026-4182/">This article is available from https://egusphere.copernicus.org/preprints/2026/egusphere-2026-4182/</self-uri>
<self-uri xlink:href="https://egusphere.copernicus.org/preprints/2026/egusphere-2026-4182/egusphere-2026-4182.pdf">The full text article is available as a PDF file from https://egusphere.copernicus.org/preprints/2026/egusphere-2026-4182/egusphere-2026-4182.pdf</self-uri>
<abstract>
<p>High-resolution ice-core analysis requires sampling methods that preserve millimeter to sub-millimeter spatial information. We evaluate ambient-pressure femtosecond laser ablation (fs-LA) as a solid-phase and geometry-tolerant sampling method for water ice under cold, dry laboratory conditions. At 35 &lt;em&gt;&amp;micro;&lt;/em&gt;J and 50 kHz, visible localized craters were produced at all tested exposure times, with mean inner diameters of approximately 87&amp;ndash;165 &lt;em&gt;&amp;micro;&lt;/em&gt;m. Crater formation was repeatable at a 0.5 mm pitch along 400-position scan paths. The 1 s exposure produced the smallest sampling footprint and largest fraction of craters without visible rims, supporting fs-LA as a platform for future cryospheric analyses.</p>
</abstract>
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<funding-group>
<award-group id="gs1">
<funding-source>Danmarks Frie Forskningsfond</funding-source>
<award-id>2032-00228B</award-id>
</award-group>
</funding-group>
</article-meta>
</front>
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