Wednesday Colloquia

Low-energy free electron molecule collisions: Do we understand it fully?

by Prof. Vaibhav Prabhudesai (TIFR Mumbai)

Wednesday, January 31, 2024 from to (Asia/Kolkata)
at AG-66 and via ZOOM webinar ( Zoom link: https://zoom.us/j/97963259354?pwd=ZFZsa2xqWGJSZW5pUjZPNkNqeGlEZz09 )
Meeting ID: 979 6325 9354 Pass code: 04072020
Description
Ever since the discovery of electrons, their collisions with molecules have been used as a tool to probe molecular properties, test the theoretical models that explain these interactions and provide crucial data relevant to these processes in the context of radiation damage, plasma and atmospheric chemistry, etc. Lately, they have been used to explore chemical reaction control. However, do we understand them completely? 
The best way to answer this question is to look at the electron collisions with the simplest molecule, hydrogen. Our recent experiments on free electron collisions with H2 have given some startling results, pointing towards facets not considered earlier in electron collisions1,2. They also highlight the vast possibilities of such interactions in chemical control. In this talk, I will introduce the basics of electron-molecule collisions and highlight these findings.

References:

1. E. Krishnakumar, Vaibhav S. Prabhudesai, and Nigel J. Mason Nat. Phys. 14, 149 (2018) 
2. Akshay Kumar, Suvasis Swain, and Vaibhav S. Prabhudesai Nat. Comm. 14, 2769 (2023)