95 citations · 144 across the 5 of their papers we have counts for
5 papers
Heteronuclear ionizing collisions between laser-cooled metastable helium atoms
J. M. McNamara, R. J. W. Stas, W. Hogervorst +1
We have investigated cold ionizing heteronuclear collisions in dilute mixtures of metastable (2 3S1) 3He and 4He atoms, extending our previous work on the analogous homonuclear col…
Production of a degenerate Fermi gas of metastable helium-3 atoms
W. Vassen, T. Jeltes, J. M. McNamara +1
We give an overview of the experiments at the Laser Centre of the Vrije Universiteit in Amsterdam on ultracold gases of metastable helium-4 and helium-3 as well as mixtures of both…
Helium 2 3S - 2 1S metrology at 1557 nm
K. A. H. van Leeuwen, W. Vassen
An experiment is proposed to excite the 'forbidden' 1s2s 3S1 - 1s2s 1S0 magnetic dipole (M1) transition at 1557 nm in a collimated and slow atomic beam of metastable helium atoms.…
A Degenerate Bose-Fermi Mixture of Metastable Atoms
J. M. McNamara, T. Jeltes, A. S. Tychkov +2
We report the observation of simultaneous quantum degeneracy in a dilute gaseous Bose-Fermi mixture of metastable atoms. Sympathetic cooling of helium-3 (fermion) by helium-4 (boso…
Homonuclear ionizing collisions of laser-cooled metastable helium atoms
R. J. W. Stas, J. M. McNamara, W. Hogervorst +1
We present a theoretical and experimental investigation of homonuclear ionizing collisions of laser-cooled metastable helium atoms, considering both the fermionic He-3 and bosonic…