ROTATIONAL TUNNELLING SPECTROSCOPY WITH NEUTRONS

The Rotational Spectrum of Tunnelling Methyl Groups

The quantum-classical transition of methyl rotation highlights conflicting assumptions of quan­ tum and classical mechanics, the first assuming that identical fermions are indistinguishable while the second recognises they are distinguishable through their histories. When this is introduced into quantum mechanics, the two are compatible and there is a smooth transition of the methyl rotational ...

Scanning near eld optical spectroscopy with light tunnelling control

Rotational Tunnelling in Methyl Metal Compounds X2(CH3)4

with X = As, Sb, Bi A. K u h n e n , W. Müller'Warmuth, M. Prager 3 , O. M ü n d t b , M . Re t i b , and G. Becker 6 Institut für Physikalische Chemie der Westfälischen Wilhelms-Universität, Schlossplatz 4/7, D-48149 Münster a Institut für Festkörperforschung des Forschungszentrums Jülich, D-52425 Jülich b Institut für Anorganische Chemie der Universität Stuttgart, Pfaffenwaldring 55, D-70550 ...

Chiral rotational spectroscopy

We introduce chiral rotational spectroscopy, a technique that enables the determination of the orientated optical activity pseudotensor components BXX , BYY , and BZZ of chiral molecules, in a manner that reveals the enantiomeric constitution of a sample and provides an incisive signal even for a racemate. Chiral rotational spectroscopy could find particular use in the analysis of molecules tha...

Rotational spectroscopy meets theory.

Rotational spectroscopy is known to be a technique that is widely used to infer information on molecular structure and dynamics. In the last few decades, its role in the field of atmospheric and astrophysical investigations has rapidly grown. However, several are the challenging aspects in rotational spectroscopy, since the detection and analysis of spectra as well as interpretation of obtained...