After converting the VMI in the Red Dragon lab to an ion time-of-flight spectrometer, it is currently used to investigate those inelastic electron recollisions, which lead to fragmentation. Inelastic recollisions lead to electron-electron interactions in the outer shell of the molecule and investigating them is one of the objectives of attosecond science.
In the lab, we are trying to find out if the recollision induced
fragmentation of N2 depends on the alignment of the molecule, or in
other words if fragmentation is more probable if the electron hits the
molecule parallel or perpendicular with respect to the bond.
I will give a detailed description of the required experimental steps to
find an answer to that question and present a few intermediate results.
I will try to raise a few questions about the setup and future plans to
get input from the group.
Most of the experimental issues are mentioned in the following paper, written by a very familiar Irish man:
Nevertheless, I will briefly discuss them during the meeting as well.
PPT slides to follow...