Quantitative hydrogen analysis in minerals based on a semi-empirical approach

• DOI: 10.1016/j.nimb.2012.12.061
• Publication Date: 2013-01-24T15:01:15Z
• Authors: P. Kristiansson; M. Borysiuk; L. Ros; H. Skogby; N. Abdel; M. Elfman; E.J.C. Nilsson; J. Pallon
• Keywords: Elastic recoil detection; Normalization

Hydrogen normally occurs as hydroxyl ions related to defects at specific crystallographic sites in the structures, and is characterized by infrared spectroscopy (FTIR). For quantification purposes FTIR technique has proven be less precise since calibrations against independent methods are needed. analysis NMP can solve many of problems, due low detection limit, high lateral resolution, insignificant matrix effects possibility discriminate surface-adsorbed water. The been shown work both on thin samples thicker geological samples. To avoid disturbance from surface contamination hydrogen analyzed inside semi-thick used an elastic recoil where incident projectile (proton) recoiled detected coincidence a segmented detector. Both traditional annular system with detector divided two halves new double-sided silicon strip (DSSSD) used. In this we present upgraded version technique, studying sets mineral standards combined pre-sample charge normalization. improve processing time data suggest very simple semi-empirical approach for evaluation. advantages drawbacks discussed possible extension model suggested.