Bulletin of the American Physical Society
53rd Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 67, Number 7
Monday–Friday, May 30–June 3 2022; Orlando, Florida
Session Z07: Femtosecond Structural Dynamics
10:30 AM–12:30 PM,
Friday, June 3, 2022
Room: Salon 5/6
Chair: Thomas Weinacht, Stony Brook
Abstract: Z07.00007 : 3D Velocity Map Imaging of Electrons
11:42 AM–11:54 AM
Presenter:
Gonenc Mogol
(Stony Brook University)
Authors:
Gonenc Mogol
(Stony Brook University)
Chuan Cheng
(Stony Brook University)
Thomas Weinacht
(Stony Brook University)
Andrei Nomerotski
(Brookhaven National Laboratory)
Carlos A Trallero
(University of Connecticut)
We present a technique to measure 3D VMI of electrons using an event based camera (TPX3CAM), which has a built-in fast time to digital converter (TDC) with a time resolution of 260ps. As usual the transverse momentum is obtained by the camera's sensor and we trigger the camera's TDC by the electrical signal from the phosphor screen. This allows us to implement 3D VMI for electrons without modifying the underlying VMI or the vacuum system.
This new technique, along with voltage switching, will allow us to measure 3D momenta of ions and electrons in coincidence. This very simple implementation of momentum resolved coincidence measurements can play an important role in time resolved spectroscopy.
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