29 citations · 127 across the 14 of their papers we have counts for
14 papers
Vibrational Quantum-State-Controlled Reactivity in the O2+ + C3H4 Reaction
C. Zagorec-Marks, G. S. Kocheril, T. Kieft +5
Quantum-state-controlled reactivity is a long-standing goal in the field of physical chemistry. In this work, we explore the vibrational-state-dependent behavior of the ion-molecul…
Sensitive Low-Recoil VUV 1+1 REMPI Detection of ND
Stach E. J. Kuijpers, Panagiotis Kalaitzis, Evangelia Sakkoula +3
In molecular beam scattering experiments, an important technique for measuring product energy and angular distributions is velocity map imaging following photoionization. For studi…
Handshake electron transfer from hydrogen Rydberg atoms incident at a series of metallic thin films
Jemma A Gibbard, Timothy P Softley
Thin metallic films have a 1D quantum well along the surface normal direction, which yields particle-in-a-box style electronic quantum states. However the quantum well is not infin…
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…
Collisional trap losses of cold, magnetically-trapped Br atoms
J. Lam, C. J. Rennick, T. P. Softley
Near-threshold photodissociation of Br from a supersonic beam produces slow bromine atoms that are trapped in the magnetic field minimum formed between two opposing permanent m…
Magnetic Trapping of Cold Bromine Atoms
C. J. Rennick, J. Lam, W. G. Doherty +1
Magnetic trapping of bromine atoms at temperatures in the milliKelvin regime is demonstrated for the first time. The atoms are produced by photodissociation of Br molecules in…
Getting a Grip on the Transverse Motion in a Zeeman Decelerator
Katrin Dulitz, Michael Motsch, Nicolas Vanhaecke +1
Zeeman deceleration is an experimental technique in which inhomogeneous, time-dependent magnetic fields generated inside an array of solenoid coils are used to manipulate the veloc…