title: Focal length determination of Raman immersion ball probes in diverse media.
authors.affiliation: Akzo Nobel Chemicals bv, Research, Development & Innovation, Department of Chemicals Analytics and Physics, Molecular Spectroscopy Group, Velperweg 76, 6824 BM, Arnhem, The Netherlands. henkjan.vanmanen@akzonobel.com
authors.forename: Henk-Jan
authors.initials: HJ
authors.lastname: van Manen
authors.forename: Rob
authors.initials: R
authors.lastname: Bloemenkamp
authors.forename: Oscar F
authors.initials: OF
authors.lastname: van den Brink