Photoelectron spectroscopy, in all its forms, is a powerful tool for gleaning structural and dynamical information from atomic and molecular targets. However, many targets and processes have been out of reach due to the inefficiencies, or poor resolution, of the techniques used. To reliably study difficult systems high resolution, high efficiency, high signal-to-noise and robustness is essential. We have recently developed a co-axial velocity-map imaging spectrometer which addresses all of these issues. By re-working the electrostatic electrode structure and aspects of its operation, we have achieve resolving powers of E/ΔE = 250 - 270 while using an effective interaction region size of 2 mm3.

See here for further information