Team Leader: Professor C. A. De Lange (Network Manager)

Organisational Experience: Head of Chemistry Department (l990-1992); Chairman of Molecular Section of the Netherlands Organisation for Scientific Research (1986-l988); Chairmari European Research Conference I993 on "Very high resolution spectroscopy with photoelectrons".

Research Experience: 25 years experience in studying the electronic structure of reactive intermediates and small molecules using photoelectron spectroscopy with VUV discharge lamps, synchrotron radiation and nanosecond and (sub)picosecond lasers.

Network Role: Performing high-resolution photoelectron spectroscopy of reactive intermediates, small molecules, and molecular clusters. Low-pressure FT-ICR studies on neut.ral and ion hydrocarbon species of importance in combustion and astrophysical studies. Also chlorine-containing radical species (important in atmospheric ozone depletion), their dimers and ions will be studied.

Staff Involved: Professor C. A. De Lange, Professor N. M. M. Nibbering, Dr. L. J. de Koning, Dr. S. I. Jorgensen each for 4mm/year and 3 technical staff for a total of 8mm/year.

Research Links: Collaborated with the Southampton and Orsay groups for about 10 years. A Southampton student has recently worked in Amsterdam (for 4 years) 

Laboratory: The Amsterdam group has designed and built two "magnetic bottle" time-of-flight electron spectrometers for studying reactive intermediates. Both instruments can be used in dispersive PES, ZEKE, and mass-resolved ion detection modes. One spectrometer is interfaced with a molecular beam which allows the study of clusters. Dispersed fluorescence spectroscopy can be carried out in a separate apparatus. Various ns laser systems and a (sub)ps laser system are available. An ICR-FTMS instrument is available for ion-molecule reaction studies.

 Two Significant Recent Publications:

Research Role: The Amsterdam group has extensive experimental experience with virtually every aspect of high-resolution photoelectron spectroscopy of reactive intermediates, small molecules, and more recently molecular clusters. Detailed interpretation of the experimental results is carried out in terms of sophisticated quantum-chemical calculations, often in collaboration with leading theoretical groups. The unique capabilities for performing high-resolution, high-sensitivity photoelectron spectroscopy of reactive intermediates and clusters, as well as the (sub)picosecond time-resolved photoelectron spectroscopy facility constitute excellent possibilities for collaboration with all the experimental groups in the Network. Existing ties with Southampton and Orsay will be strengthened and new collaborations with other network members will be formed. ICR-FTMS studies will be performed in close collaboration with Garching and Salisbury.