Toroidal Photoelectron Spectrometer for Coincidence Studies

1
Toroidal Photoelectron Spectrometer for
Coincidence Studies A. Padmanabhan1, P. A.
Thorn1, L. Zuin2, M. A. MacDonald2, T. J.
Reddish1 1 Physics Department, University of
Windsor, 401 Sunset Ave, Windsor, Ontario,
Canada, N9B 3P4. 2 Canadian Light Source, 101
Perimeter Road, University of Saskatchewan,
Saskatoon, SK, Canada, S7N 0X4 Email
reddish_at_uwindsor.ca Web-Site
http//www.uwindsor.ca/reddish
Future Prospects
This apparatus was primarily developed to
investigate electron-electron correlation in
double ionization of atomic and molecular targets
a subject that continues to be of intense
theoretical interest. The main challenge now is
multiple particle detection - e.g. (?,eion),
(?,2eion), (?,3e) - using Auger and/or
photoelectrons in coincidence with fragment ions
on simple systems that are theoretically
tractable. Such studies will be most sensitive to
electron-ion correlation / dichroism /
interference effects in the ionization/dissociatio
n of light molecules. Experimentally, this
requires helical / linear undulators at the
Canadian Light Source, together with the
continued development of detector technology.
Funding Agencies