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Through multicoincidence fragment measurements together with ab\u00a0initio molecular dynamics (AIMD) simulations, we find that a transient deformation route appears in competition with the expected Coulomb explosion. The AIMD simulations visually demonstrate that CO23+ undergoes several bending vibrations in \u223c50\u2013480\u00a0fs, and in the final dissociation stages, the electron density distribution in three-dimensional space migrates from the O ion to the C ion, while the bond strength rapidly decreases to 0, resulting in bond breaking assisted by the asymmetric stretching vibrations. The measured kinetic energy releases are in general agreement with AIMD simulations, and the deduced amount of energy transfer into the vibrational and rotational degrees of freedom of CO2+ is about 3\u00a0eV less than that estimated by the Coulomb potential.<\/jats:p>","DOI":"10.1063\/5.0255127","type":"journal-article","created":{"date-parts":[[2025,3,21]],"date-time":"2025-03-21T10:57:50Z","timestamp":1742554670000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":0,"title":["Ultrafast fragmentation dynamics of carbon dioxide trication induced by an intense laser field: Transient deformation route vs direct Coulomb repulsion"],"prefix":"10.1063","volume":"162","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6280-3154","authenticated-orcid":false,"given":"Weiqing","family":"Xu","sequence":"first","affiliation":[{"name":"Center for Transformative Science, ShanghaiTech University 1 , Shanghai 201210,","place":["China"]},{"name":"Shanghai HIgh repetitioN rate XFEL and Extreme light facility (SHINE), ShanghaiTech University 2 , Shanghai 201210,","place":["China"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3543-2597","authenticated-orcid":false,"given":"Ruichao","family":"Dong","sequence":"additional","affiliation":[{"name":"Shanghai Advanced Research Institute, Chinese Academy of Sciences 3 , Shanghai 201210,","place":["China"]},{"name":"University of Chinese Academy of Sciences 4 , Beijing 100049,","place":["China"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7402-2136","authenticated-orcid":false,"given":"Xincheng","family":"Wang","sequence":"additional","affiliation":[{"name":"Center for Transformative Science, ShanghaiTech University 1 , Shanghai 201210,","place":["China"]},{"name":"Shanghai HIgh repetitioN rate XFEL and Extreme light facility (SHINE), ShanghaiTech University 2 , Shanghai 201210,","place":["China"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8584-7870","authenticated-orcid":false,"given":"Ahai","family":"Chen","sequence":"additional","affiliation":[{"name":"Center for Transformative Science, ShanghaiTech University 1 , Shanghai 201210,","place":["China"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5497-2353","authenticated-orcid":false,"given":"Yuhai","family":"Jiang","sequence":"additional","affiliation":[{"name":"Center for Transformative Science, ShanghaiTech University 1 , Shanghai 201210,","place":["China"]},{"name":"Shanghai HIgh repetitioN rate XFEL and Extreme light facility (SHINE), ShanghaiTech University 2 , Shanghai 201210,","place":["China"]},{"name":"School of Physical Science and Technology, ShanghaiTech University 5 , Shanghai 201210,","place":["China"]}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"317","published-online":{"date-parts":[[2025,3,21]]},"reference":[{"key":"2025032110551159900_c1","doi-asserted-by":"publisher","first-page":"1021","DOI":"10.1103\/revmodphys.85.1021","article-title":"The molecular universe","volume":"85","year":"2013","journal-title":"Rev. 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