NDLI: Decelerated molecular beams for high-resolution spectroscopy : The hyperfine structure of $\mathsf{^{15}}$ ND $\mathsf{

Content Provider	Springer Nature Link
Author	Veldhoven, J. Küpper, J. Bethlem, H. L. Sartakov, B. Roij, A. J. A. Meijer, G.
Copyright Year	2004
Abstract	Ultimately, the resolution of any spectroscopic experiment is limited by the interaction time between the particles that are to be examined and the measuring device. The obtainable spectroscopic resolution in a molecular beam experiment can be considerably improved using samples of slow molecules, as produced, for example, in a Stark-decelerator. This is demonstrated here by measuring the inversion tunneling spectrum of ${}^{15}{\rm ND}_3$ using a pulsed molecular beam that has been decelerated to about 52 m/s. Hyperfine resolved inversion transitions in ${}^{15}{\rm ND}_3$ in the $\left\vert J,K\right > = \left\vert 1,1\right > $ state (around 1.43 GHz) are induced in a microwave region, and ${}^{15}{\rm ND}_3$ molecules that have undergone the transition are subsequently detected using a UV-laser based ionization detection scheme. To increase the signal intensity, the decelerated molecular beam is both transversally and longitudinally focused into the laser detection region. The observed spectral width of individual hyperfine transitions in the fully resolved spectrum is about 1 kHz, and the standard deviation of the best fit is 62 Hz.
Starting Page	337
Ending Page	349
Page Count	13
File Format	PDF
ISSN	14346060
Journal	The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics
Volume Number	31
Issue Number	2
e-ISSN	14346079
Language	English
Publisher	Springer-Verlag
Publisher Date	2004-01-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nanotechnology Quantum Physics Quantum Computing, Information and Physics Nonlinear Dynamics, Complex Systems, Chaos, Neural Networks Atoms, Molecules, Clusters and Plasmas Solid State Physics and Spectroscopy
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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