Instrument development in support of Falcon and Phebus-FP: final report

This study has been undertaken to identify various on-line instruments and post-test analytical techniques that may improve the quality of data from both the Falcon integral test programme and the Phebus-FP tests. Particular emphasis has been placed on the use of in-situ techniques to generate mass-based data on the aerodynamic properties of the aerosol and post-test analysis techniques to provide information on fission product-surface interactions. The principles of the following techniques have been reviewed: cascade impactors, tapered element oscillating microbalance (TEOM), condensation nucleus counter (CNC), aerosol spectrometer (Las-X), aerodynamic particle sizer (APS), Stoeber spiral-duct centrifuge, Knudsen cell mass spectrometry, diffuse reflectance infrared Fourier transform spectrometry (DRIFT), x-ray photoelectron spectroscopy (XPS) and secondary-ion mass spectrometry (SIMS). These methods have all been used in the Falcon experimental programme. (author)