{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T02:47:49Z","timestamp":1760150869090,"version":"build-2065373602"},"reference-count":33,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2022,1,23]],"date-time":"2022-01-23T00:00:00Z","timestamp":1642896000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004837","name":"Ministry of Science and Innovation","doi-asserted-by":"publisher","award":["PID2019-104727RB-C21","PID2019-110091GB-I00"],"award-info":[{"award-number":["PID2019-104727RB-C21","PID2019-110091GB-I00"]}],"id":[{"id":"10.13039\/501100004837","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003339","name":"Spanish National Research Council","doi-asserted-by":"publisher","award":["LINKA20085"],"award-info":[{"award-number":["LINKA20085"]}],"id":[{"id":"10.13039\/501100003339","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>In this study, novel experimental total electron detachment cross sections for O2\u2212 collisions with benzene molecules are reported for the impact energy range (10\u20131000 eV), as measured with a transmission beam apparatus. By analysing the positively charged species produced during the collision events, relative total ionisation cross sections were derived in the incident energy range of 160\u2013900 eV. Relative partial ionisation cross sections for fragments with m\/z \u2264 78 u were also given in this energy range. We also confirmed that heavier compounds (m\/z &gt; 78 u) formed for impact energies between 550 and 800 eV. In order to further our knowledge about the collision dynamics governing the fragmentation of such heavier molecular compounds, we performed molecular dynamics calculations within the framework of the Density Functional Theory (DFT). These results demonstrated that the fragmentation of these heavier compounds strongly supports the experimental evidence of m\/z = 39\u201342, 50, 60 (u) cations formation, which contributed to the broad local maximum in the total ionisation observed from 550 to 800 eV. This work reveals the reactivity induced by molecular anions colliding with hydrocarbons at high energies, processes that can take place in the interstellar medium under various local conditions.<\/jats:p>","DOI":"10.3390\/ijms23031266","type":"journal-article","created":{"date-parts":[[2022,1,23]],"date-time":"2022-01-23T20:32:52Z","timestamp":1642969972000},"page":"1266","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Total Electron Detachment and Induced Cationic Fragmentation Cross Sections for Superoxide Anion (O2\u2212) Collisions with Benzene (C6H6) Molecules"],"prefix":"10.3390","volume":"23","author":[{"given":"Carlos","family":"Guerra","sequence":"first","affiliation":[{"name":"Instituto de F\u00edsica Fundamental, Consejo Superior de Investigaciones Cient\u00edficas, Serrano 113-bis, 28006 Madrid, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1996-9925","authenticated-orcid":false,"given":"Sarvesh","family":"Kumar","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Colis\u00f5es At\u00f3micas e Moleculares, CEFITEC, Departamento de F\u00edsica, Faculdade de Ci\u00eancias e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2751-5592","authenticated-orcid":false,"given":"Fernando","family":"Aguilar-Galindo","sequence":"additional","affiliation":[{"name":"Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-San Sebasti\u00e1n, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6253-6343","authenticated-orcid":false,"given":"Sergio","family":"D\u00edaz-Tendero","sequence":"additional","affiliation":[{"name":"Departamento de Qu\u00edmica, M\u00f3dulo 13, Universidad Aut\u00f3noma de Madrid, 28049 Madrid, Spain"},{"name":"Condensed Matter Physics Center (IFIMAC), Universidad Aut\u00f3noma de Madrid, 28049 Madrid, Spain"},{"name":"Institute for Advanced Research in Chemical Science (IAdChem), Universidad Aut\u00f3noma de Madrid, 28049 Madrid, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4613-0372","authenticated-orcid":false,"given":"Ana I.","family":"Lozano","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Colis\u00f5es At\u00f3micas e Moleculares, CEFITEC, Departamento de F\u00edsica, Faculdade de Ci\u00eancias e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5266-8139","authenticated-orcid":false,"given":"M\u00f3nica","family":"Mendes","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Colis\u00f5es At\u00f3micas e Moleculares, CEFITEC, Departamento de F\u00edsica, Faculdade de Ci\u00eancias e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2754-2788","authenticated-orcid":false,"given":"Juan C.","family":"Oller","sequence":"additional","affiliation":[{"name":"Centro de Investigaciones Energ\u00e9ticas Medioambientales y Tecnol\u00f3gicas (CIEMAT), Avenida Complutense 22, 28040 Madrid, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2696-1152","authenticated-orcid":false,"given":"Paulo","family":"Lim\u00e3o-Vieira","sequence":"additional","affiliation":[{"name":"Laborat\u00f3rio de Colis\u00f5es At\u00f3micas e Moleculares, CEFITEC, Departamento de F\u00edsica, Faculdade de Ci\u00eancias e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal"}]},{"given":"Gustavo","family":"Garc\u00eda","sequence":"additional","affiliation":[{"name":"Instituto de F\u00edsica Fundamental, Consejo Superior de Investigaciones Cient\u00edficas, Serrano 113-bis, 28006 Madrid, Spain"},{"name":"Centre for Medical Radiation Physics, University of Wollongong, Wollomgong,  NSW 2522, Australia"}]}],"member":"1968","published-online":{"date-parts":[[2022,1,23]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Costa, F., Traor\u00e9-Dubuis, A., \u00c1lvarez, L., Lozano, A.I., Ren, X., Dorn, A., Lim\u00e3o-Vieira, P., Blanco, F., Oller, J.C., and Mu\u00f1oz, A. 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