Preface to the Special Issue of Molecular Physics in Honour of Professor Wim Ubachs.

[366] P.A.B. Haase, D.J. Doeglas, A. Boeschoten, E. Eliav, M. Ilias, P. Aggarwal, H.L. Bethlem, A. Borschevsky, K. Esajas, Y. Hao, S. Hoekstra, V.R. Marshall, Th. Meijknecht, M. Mooij, K. Steinebach, R.G.E. Timmermans, A. Touwen, W. Ubachs, L. Willmann, Y. Yin B Systematic study and uncertainty evaluation of P,T-odd relativistic enhancement factors in BaF b J. Chem. Phys. [25] W. Ubachs, K.S.E. Eikema, W. Hogervorst, B Narrowband extreme ultraviolet radiation tunable in the range 90.5-95 nm: application to spectroscopy of N SB 2 sb b Appl. Phys. [346] O. Versolato, A. Bayerle, M. Bayraktar, L. Behnke, H. Bekker, Z. Bouza, J. Colgan, J.R. Crespo Lopez-Urrutia, M.J. Deuzeman, R. Hoekstra, D. Kurilovich, B. Liu, R. Meijer, A. Neukirch, L. Poirier, S. Rai, A. Ryabtsev, J. Scheers, R. Schupp, J. Sheil, F. Torretti, W. Ubachs, S. Witte, B Spectroscopic investigations of YAG-laser-driven microdroplet-tin plasma sources of extreme ultraviolet radiation for nanolithography b J. Phys. [302] M.J. Deuzeman, A.S. Stodolna, E.E.B. Leerssen, A. Antoncecchi, N. Spook, T. Kleijntjens, J. Versluis, S. Witte, K.S.E. Eikema, W. Ubachs, R. Hoekstra, O.O. Versolato, B Ion distribution and ablation depth measurements of a fs-ps laser-irradiated solid tin target b J. Appl. Phys. [281] M.L. Niu, E.J. Salumbides, W. Ubachs, B Test of quantum chemistry in vibrationally-hot hydrogen molecules b J. Chem. Phys. [Extracted from the article]