Dr. Mukesh Bachhav
Group Leader and Staff Scientist
Advanced Characterization Division
Materials and Fuels Complex
Idaho National Laboratory

Abstract

High resolution characterization of materials at sub-nano scale is highly desirable for quantitative microstructural and chemical analysis to improve our understanding on structure-property-performance relationship. Atom probe tomography (APT) is a powerful technique for 3D, microstructural, and chemical studies at nano length scale. APT is routinely employed at INL to elucidate clustering/precipitation information due to irradiation on structural nuclear materials. However, APT is also proven to be an effective technique for exploring addition analysis from nuclear fuels, particularly for burnup measurement and fission product analysis. Using isotopic quantitative analysis of Uranium (U), burnup has been measured using mass spectrum data fitting tools for both metallic and ceramic fuels. This approach allows us to estimate burnup at the local length scale while producing very little to negligible radioactive waste. This seminar will focus on how APT has shown to be a valuable method for characterizing nuclear materials, improve the understanding of its performance, and predict its evolution in the long term.

Biography

Mukesh Bachhav is a staff scientist and group leader at INL in the Advanced characterization department, at Materials and Fuels Complex where he studies irradiation effects in nuclear materials using high resolution techniques. Mukesh earned a Ph.D. in Physics of Materials from the University of Rouen, France where he focused on the development of laser assisted atom probe tomography for the quantitative analysis of oxides. He subsequently became a postdoctoral fellow at the University of Michigan, where he worked on projects including understanding the mechanisms controlling microstructural evolution in alloy systems, interfacial properties, oxidation behavior, and irradiation effects in materials. Dr. Mukesh has spent the last six years at INL, focusing primarily on atom probe tomography to understand microstructural evolution in nuclear materials. He has been heavily involved in the development of APT capability to determine the burnup from metallic and ceramic fuel using isotopic analysis. He had more than 60+ publications, several invited talk at conferences, seminars and serving as an editor for frontier for nuclear engineering. He has been collaborating closely with industry, other national labs, and universities with national and international partners.

Thursday, November 16. 2023
4:00 pm seminar

zoom link upon request

BU 1202