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Ph.D. Position Available for Velocity Map Imaging Studies in Nijmegen A four-year Ph.D. contract position is open in the laboratory of Prof. David H. Parker at the Department of Laser and Molecular Physics, University of Nijmegen, The Netherlands. In this work the Velocity Map Imaging technique [1] which was invented in this group, will be applied to the study of photodissociation properties of small molecules and clusters relevant to atmospheric chemistry [2-6]. The position is supported by the Chemical Sciences section of the Dutch National Science Foundation in a joint project with Prof.. A. van der Avoird and Prof. G. Meijer, both located in Nijmegen. Atmospheric photophysics and photochemistry of molecular oxygen and its clusters will be the main focus of this study. Candidates of any nationality with a good background in molecular physics or chemistry and preferably some experience in laser and/or molecular beam techniques are very welcome to apply. Please contact Prof. David H. Parker at [log in to unmask] for more information. 1. A.T.J.B. Eppink and D.H. Parker. Velocity map imaging of ions and electrons using electrostatic lenses; Application in photoelectron and photofragment ion imaging of molecular oxygen. Rev. Sci. Instr. 68 (1997) 3477-3484. 2. A.T.J.B. Eppink, B. Buijsse, M. H. M. Janssen, W. J. van der Zande, and D.H. Parker. Production of maximally O(1D) atoms from two-step photodissociation of molecular oxygen. J. Chem. Phys. 108 (1998) 1305-1308. 3. B. Buijsse, W.J. van der Zande, A.T.J.B. Eppink, D.H. Parker, B.R. Lewis, and S.T. Gibson, Angular Distributions for photodissociation of O2 in the Herzberg continuum., J. Chem. Phys. 108 (1998) 7229-7243. 4. B.L.G. Bakker, D.H. Parker, G. Hancock, and G.A.D. Ritchie, Two-Photon dissociation of NO near 275 nm investigated by velocity map imaging. Chem. Phys. Lett. 294 (1998) 565-570. 5. A.T.J.B. Eppink and D.H. Parker. Internal energy distributions of methyl iodide A-band decomposition using photofragment velocity imaging. J. Chem. Phys. 110 (1999) 832-844. 6. P. C. Samartzis, B. Bakker, D. H. Parker, T.P. Rakitzis, and T. N. Kitsopoulos, Spin-Orbit branching ratios for the Cl-atom photofragments following the excitation of Cl2 from 310 to 470 nm. J. Chem. Phys. 110 (1999) 5201.