Lab Key visual

We study gas-phase chemical reactions in which we aim to control all degrees of freedom of the colliding particles, including internal states, relative velocity, and relative orientation. Observing a molecular scattering event with this degree of control provides the deepest insight into chemical reactions and allows us to study some of the most fundamental concepts in chemistry.

We investigate, in partiucular, polyatomic chemical reactions at energies as little as 80 mK above absolute zero. We reach these low collision energies merging two neutral supersonic expansions into a single beam such that relative molecular velocities are low even if the beams are fast in the laboratory.

Cold Chemistry: Molecular Scattering and Reactivity Near Absolute Zero

The Royal Society of Chemistry.

Energy dependent stereodynamics of the Ne(3P2)+Ar reaction

S. D. S. Gordon; J. Zou; S. Tanteri; J. Jankunas; A. Osterwalder

Physical Review Letters. 2017.

DOI : 10.1103/PhysRevLett.119.053001.

3D-Printed Beam Splitter for Polar Neutral Molecules

S. D. Gordon; A. Osterwalder

Physical Review Applied. 2017.

DOI : 10.1103/PhysRevApplied.7.044022.

Call for papers: Roll over hydrogen: a fundamental system in all states

O. Dulieu; A. Alnaser; J. Colgan; E. Grant; E. Krishnakumar et al.

Journal Of Physics B-Atomic Molecular And Optical Physics. 2017.

DOI : 10.1088/1361-6455/50/1/010201.

A 3D printed beam splitter for polar neutral molecules

S. D. S. Gordon; A. Osterwalder

Physical Review Applied. 2017.

DOI : 10.1103/PhysRevApplied.7.044022.

Experimental and Theoretical Studies of Low-Energy Penning Ionization of NH3, CH3F, and CHF3

K. Jachymski; M. Hapka; J. Jankunas; A. Osterwalder

ChemPhysChem. 2016.

DOI : 10.1002/cphc.201600608.

Importance of rotationally inelastic processes in low-energy Penning ionization of CHF3

J. Jankunas; K. Jachymski; M. Hapka; A. Osterwalder

Journal of Chemical Physics. 2016.

DOI : 10.1063/1.4953908.

Oriented O(3P2), Ne(3P2), and He(3S1) atoms emerging from a bent magnetic guide

J. Jankunas; K. S. Reisyan; T. P. Rakitzis; A. Osterwalder

Molecular Physics. 2016.

DOI : 10.1080/00268976.2015.1095363.