83 citations · 359 across the 12 of their papers we have counts for
4 papers · 1 filter
A sub-ppm upper limit on the cosmological variations of the fine structure constant alpha
S. Muller, A. Beelen, M. Guelin +9
Absorption spectroscopy toward high-redshift quasars provides strong constraints on the putative variation of fundamental constants of physics on cosmological time scales. The subm…
A cold beam of BaOH molecules using a water-vapour seeded neon gas
Ties Hendrik Fikkers, Nithesh Balasubramanian, Joost W. F. van Hofslot +3
In this paper we report on the production and characterization of a cold beam of BaOH molecules using a cryogenic buffer-gas beam source. BaOH is a highly suitable molecule for stu…
Precision spectroscopy of the transition in BaF
M. C. Mooij, H. L. Bethlem, W. Ubachs +14
High-resolution spectroscopy on the - electronic system of BaF is performed using a cold molecular beam produced by a buffer gas source. The hyperfin…
2D transverse laser cooling of a hexapole focused beam of cold BaF molecules
Joost W. F. van Hofslot, Izabella E. Thompson, Anno Touwen +18
A cryogenic buffer gas beam, an electrostatic hexapole lens, and 2D transverse Doppler laser cooling are combined to produce a bright beam of barium monofluoride (Ba…