000170105 001__ 170105
000170105 005__ 20260318155254.0
000170105 0247_ $$2doi$$a10.1016/j.scriptamat.2026.117250
000170105 0248_ $$2sideral$$a148678
000170105 037__ $$aART-2026-148678
000170105 041__ $$aeng
000170105 100__ $$aMery, Mario
000170105 245__ $$aOn the use of transmitted-ion energy losses to infer implanted helium densities in materials
000170105 260__ $$c2026
000170105 5060_ $$aAccess copy available to the general public$$fUnrestricted
000170105 5203_ $$aHelium accumulation can severely degrade materials, making accurate quantification of implanted He and its effects on material structure essential. Here, we report the first exploration of using in situ transmission energy-loss measurements to infer helium densities during ion irradiation. Free-standing nanometric Ta₂O₅ films were irradiated with 9.85 keV He⁺ ions while monitoring the energy loss of transmitted ions, complemented by post-irradiation TEM. The measured energy loss evolves nonlinearly with fluence, reflecting the combined effects of helium incorporation and preferential oxygen sputtering induced oxide reduction. Post-irradiation TEM reveals bubbles with average diameters of ∼11 nm, confirming significant helium accumulation. A first-order phenomenological model is employed to describe stopping-power evolution and its relation to helium density, explicitly accounting for beam-induced material changes.
000170105 536__ $$9info:eu-repo/grantAgreement/EC/H2020/101007825/EU/ULtra ThIn MAgneto Thermal sEnsor-Ing/ULTIMATE-I$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 101007825-ULTIMATE-I
000170105 540__ $$9info:eu-repo/semantics/embargoedAccess$$aby-nc-nd$$uhttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
000170105 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000170105 700__ $$0(orcid)0000-0002-1296-4793$$aAguirre, Myriam H.$$uUniversidad de Zaragoza
000170105 700__ $$aNuñez, Jorge M.
000170105 700__ $$aEsaulov, Vladimir A.
000170105 700__ $$aGarcía, Carlos
000170105 700__ $$aValdés, Jorge E.
000170105 7102_ $$12003$$2395$$aUniversidad de Zaragoza$$bDpto. Física Materia Condensa.$$cÁrea Física Materia Condensada
000170105 773__ $$g277 (2026), 117250 [6 pp.]$$pScr. mater.$$tScripta Materialia$$x1359-6462
000170105 8564_ $$s2075448$$uhttps://zaguan.unizar.es/record/170105/files/texto_completo.pdf$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2028-03-01
000170105 8564_ $$s1583855$$uhttps://zaguan.unizar.es/record/170105/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2028-03-01
000170105 909CO $$ooai:zaguan.unizar.es:170105$$particulos$$pdriver
000170105 951__ $$a2026-03-18-13:52:23
000170105 980__ $$aARTICLE