b'Ion-Solid InteractionsProof-of-concept of a new tool opens possibilities for the development of in Focused Ion Beam/ materials for advanced battery applications.Secondary Ion MassM icro-analytical characterization provides critical insights to micro-, nano-, and atomic-scale processes that take place in advanced nuclear reactors. Spectrometry: TowardThe scope of these insights is defined by the scope of instrumental Nanoscale Tracecapabilities that are available to researchers. This project conducted an in-depth study of ion-solid interactions in the new G4 Thermo Helios Hydra Plasma FIB (PFIB)/scanning Element and Isotopicelectron microscopy/secondary ion mass spectroscopy (SIMS) system that is installed Distribution Analysis inin the Irradiated Material Characterization Laboratory at INL. This instrument has an unprecedented combination of various analytical techniques and presents distinct IrradiatedMaterials opportunities for in situ analysis of irradiated materials, including all elements and their isotopes from hydrogen to californium at nanometer scale.This study on ion-solid interaction in the new G4 PFIB-SIMS expanded fundamental understandings of this characterization technique and, thus, provided a larger scope of instrument capability in analyzing trace elements (0.01 atomic percent in TOTAL APPROVED AMOUNT:concentration), light elements (e.g., hydrogen, helium, lithium, beryllium, boron), and $125,000 over 1 year isotopic compositions in irradiated materials in situ with high spatial resolution. The G4 FIB-SIMS is unique in that it has four primary ion beamsnitrogen, oxygen, argon, PROJECT NUMBER:and xenonall available in a single instrument. In addition to investigations on the 20A1052-018 ion-solid interactions in a range of materials, we also demonstrated how the different PRINCIPAL INVESTIGATOR:primary ion beams complement each other in resolving signal interference and enable Daniel Murray high-quality data analysis for a more inclusive range of isotopes. The work in this project was the pilot effort in filling knowledge gaps in multi-ion PFIB-SIMS, which is critical for CO-INVESTIGATORS: using the full potential of this first of its kind, state-of-the-art instrument in innovative Xiaofei Pu, INL nuclear material research. This new analytical capability will also benefit other areas of Kurt Langworthy,materials science, such as research and development for advanced batteries.University of OregonStephen Golledge,PRESENTATION:University of Oregon Murray, D., and X. Pu, FIB-SIMS in a multi-ion source plasma FIB, The Minerals, Metals & Materials Society Annual Meeting and Exhibition 2021, Virtual,Mar. 1518, 2021.Capability demonstration mapping hydrogen distribution in a lithium battery material. (a) Cross section of an interlayer phase. (b) The corresponding hydrogen map. This demonstrates the ability to map 44 hydrogen distribution, which is important for many nuclear materials systems, and shows the extremely high resolution of the instrument. Features down to 100 nm and below can be seen in this map.'