A stringent limit on a drifting proton-to-electron mass ratio from alcohol in the early universe J Bagdonaite, P Jansen, C Henkel, HL Bethlem, KM Menten, W Ubachs
Science 339 (6115), 46-48, 2013
174 2013 Methanol as a sensitive probe for spatial and temporal variations of the proton-to-electron mass ratio P Jansen, LH Xu, I Kleiner, W Ubachs, HL Bethlem
Physical Review Letters 106 (10), 100801, 2011
108 2011 Perspective: Tipping the scales: Search for drifting constants from molecular spectra P Jansen, HL Bethlem, W Ubachs
The Journal of chemical physics 140 (1), 2014
103 2014 Robust Constraint on a Drifting Proton-to-Electron Mass Ratio at J Bagdonaite, M Daprà, P Jansen, HL Bethlem, W Ubachs, S Muller, ...
Physical Review Letters 111 (23), 231101, 2013
77 2013 Static trapping of polar molecules in a traveling wave decelerator M Quintero-Pérez, P Jansen, TE Wall, JE van den Berg, S Hoekstra, ...
Physical Review Letters 110 (13), 133003, 2013
69 2013 Precision measurement of the ionization energy of Cs i J Deiglmayr, H Herburger, H Saßmannshausen, P Jansen, H Schmutz, ...
Physical Review A 93 (1), 013424, 2016
64 2016 Molecular fountain C Cheng, APP Van Der Poel, P Jansen, M Quintero-Pérez, TE Wall, ...
Physical Review Letters 117 (25), 253201, 2016
52 2016 Slow and velocity-tunable beams of metastable M Motsch, P Jansen, JA Agner, H Schmutz, F Merkt
Physical review A 89 (4), 043420, 2014
49 2014 Direct determination of the sign of the NO dipole moment A Gijsbertsen, W Siu, MF Kling, P Johnsson, P Jansen, S Stolte, ...
Physical review letters 99 (21), 213003, 2007
44 2007 Sensitivity of transitions in internal rotor molecules to a possible variation of the proton-to-electron mass ratio P Jansen, I Kleiner, LH Xu, W Ubachs, HL Bethlem
Physical Review A 84 (6), 062505, 2011
43 2011 A Unified Framework for Understanding Nucleophilicity and Protophilicity in the SN 2/E2 Competition P Vermeeren, T Hansen, P Jansen, M Swart, TA Hamlin, FM Bickelhaupt
Chemistry–A European Journal 26 (67), 15538-15548, 2020
35 2020 Deceleration and trapping of ammonia molecules in a traveling-wave decelerator P Jansen, M Quintero-Pérez, TE Wall, JE van den Berg, S Hoekstra, ...
Physical Review A 88 (4), 043424, 2013
32 2013 Sensitivity to a possible variation of the proton-to-electron mass ratio of torsion-wagging-rotation transitions in methylamine CH VV Ilyushin, P Jansen, MG Kozlov, SA Levshakov, I Kleiner, W Ubachs, ...
Physical Review A 85 (3), 032505, 2012
28 2012 Precision Spectroscopy in Cold Molecules: The Lowest Rotational Interval of P Jansen, L Semeria, LE Hofer, S Scheidegger, JA Agner, H Schmutz, ...
Physical review letters 115 (13), 133202, 2015
26 2015 Ionization Energy of the Metastable G Clausen, P Jansen, S Scheidegger, JA Agner, H Schmutz, F Merkt
Physical Review Letters 127 (9), 093001, 2021
20 2021 A compact molecular beam machine P Jansen, DW Chandler, KE Strecker
Review of Scientific Instruments 80 (8), 2009
16 2009 Precision Measurements in Few-Electron Molecules: The Ionization Energy of Metastable L Semeria, P Jansen, GM Camenisch, F Mellini, H Schmutz, F Merkt
Physical Review Letters 124 (21), 213001, 2020
15 2020 Methyl mercaptan (CH P Jansen, LH Xu, I Kleiner, HL Bethlem, W Ubachs
Physical Review A 87 (5), 052509, 2013
14 2013 Velocity map imaging of a slow beam of ammonia molecules inside a quadrupole guide M Quintero-Pérez, P Jansen, HL Bethlem
Physical Chemistry Chemical Physics 14 (27), 9630-9635, 2012
14 2012 Manipulating beams of paramagnetic atoms and molecules using inhomogeneous magnetic fields P Jansen, F Merkt
Progress in nuclear magnetic resonance spectroscopy 120, 118-148, 2020
13 2020 
Hendrick BethlemAssociate professor of Physics, Vrije Universiteit AmsterdamZweryfikowany adres z vu.nl
