29 citations · 127 across the 14 of their papers we have counts for
8 papers · 1 filter
Simulating rotationally inelastic collisions using a Direct Simulation Monte Carlo method
O. Schullian, J. Loreau, N. Vaeck +4
A new approach to simulating rotational cooling using a direct simulation Monte Carlo (DSMC) method is described and applied to the rotational cooling of ammonia seeded into a heli…
A chopper system for shortening the duration of pulsed supersonic beams seeded with NO or Br2 down to 13 microseconds
Jessica Lam, Chris Rennick, Tim Softley
A chopper wheel construct is used to shorten the duration of a molecular beam to 13 microseconds. Molecular beams seeded with NO or with Br2 and an initial pulse width of greater o…
Resonant charge transfer of hydrogen Rydberg atoms incident at a Cu(100) projected band-gap surface
J. A. Gibbard, M. Dethlefsen, M. Kohlhoff +4
The charge transfer (ionization) of hydrogen Rydberg atoms (principal quantum number ) incident at a Cu(100) surface is investigated. Unlike fully metallic surfaces, where…
Ionization of Rydberg H atoms at band-gap metal surfaces via surface and image states
E. So, J. A. Gibbard, T. P. Softley
Wavepacket propagation calculations are reported for the interaction of a Rydberg hydrogen atom ( with Cu(111) and Cu(100) surfaces (represented by a Chulkov potential), in…
A compact design for a magnetic synchrotron to store beams of hydrogen atoms
Aernout P P van der Poel, Katrin Dulitz, Timothy P Softley +1
We present a design for an atomic synchrotron consisting of 40 hybrid magnetic hexapole lenses arranged in a circle. We show that for realistic parameters, hydrogen atoms with a ve…
Zeeman deceleration of electron-impact-excited metastable helium atoms
Katrin Dulitz, Atreju Tauschinsky, Timothy P Softley
We present experimental results that demonstrate - for the first time - the Zeeman deceleration of helium atoms in the metastable 2^3S_1state. A more than 40% decrease of the kinet…
Coulomb crystal mass spectrometry in a digital ion trap
Nabanita Deb, Laura L. Pollum, Alexander D. Smith +4
We present a mass spectrometric technique for identifying the masses and relative abundances of Coulomb-crystallized ions held in a linear Paul trap. A digital radiofrequency wavef…
Model for the overall phase-space acceptance in a Zeeman decelerator
Katrin Dulitz, Nicolas Vanhaecke, Timothy P. Softley
We present a new formalism to calculate phase-space acceptance in a Zeeman decelerator. Using parameters closely mimicking previous Zeeman deceleration experiments, this approach r…