Berlin 2014 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
MO: Fachverband Molekülphysik
MO 13: Posters 3: Cold Molecules, Helium Nano Droplets, and Experimental Techniques
MO 13.17: Poster
Wednesday, March 19, 2014, 16:30–18:30, Spree-Palais
Observation of coherent interference and determination of strengths and signs of an electric- and magnetic-dipole transition moment in OH — •H.C. Schewe1, D. Zhang1, X. Wang1, G. Meijer1,2, B. Sartakov3, R. W. Field4, and N. Vanhaecke1,5 — 1Fritz-Haber-Institut der Max-Planck-Gesellschaft Faradayweg 4-6, 14159 Berlin — 2Radboud University Nijmegen, Institute for Molecules and Materials, Heijendaalseweg 135, 6525 AJ Nijmegen, the Netherlands. — 3General Physics Institute RAS, Vavilov Street 38, 119991 Moscow, Russia — 4Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 — 5Laboratoire Aimé Cotton, CNRS, Université Paris-Sud, 91405
Spectroscopic investigations of particles are a fundamental method to investigate its structure and dynamics. Higher order transitions like a magnetic-dipole or electric-quradrupole transition reveal a deeper insight into the quantum system itself. Usually these transitions are many orders of magnitude weeker and, therefore, experimentally challenging to determine.
The magnetic dipole transition in the OH radical has been determined in two different ways: (1) using a static electric field, whereby an electric-dipole transition moment is admixed to a magnetic-dipole transition, and (2) using the method of Stark interference: by applying a static magnetic and static electric field, a coherent interference of the electric- and magnetic transition dipole moment could be observed, and the strength and the sign of the transition momenta was determined.