10 research outputs found
Deceleration and electrostatic trapping of OH radicals
A pulsed beam of ground state OH radicals is slowed down using a Stark
decelerator and is subsequently loaded into an electrostatic trap.
Characterization of the molecular beam production, deceleration and trap
loading process is performed via laser induced fluorescence detection inside
the quadrupole trap. Depending on details of the trap loading sequence,
typically OH () radicals are trapped at a density
of around cm and at temperatures in the 50-500 mK range. The 1/e
trap lifetime is around 1.0 second.Comment: 4 pages, 3 figure
Scattering of vibrationally and electronically excited co molecules from a lif(100) surface
Contains fulltext :
98995.pdf (publisher's version ) (Open Access
Multimode dynamics in a short-pulse THz free electron laser
The interaction of waveguide modes and consequences on laser operation are studied numerically in a THz free electron laser (FEL) driven by short electron bunches. The considered FEL cavity configuration is represented by a parallel-plate waveguide extending over the complete distance between cylindrical cavity mirrors with energy out-coupling through a rectangular slit in one of the mirrors. We describe the multimode FEL cavity desynchronization dynamics and predict strong enhancement in FEL power at special cavity configurations, when modes are degenerate. Furthermore, we predict that simultaneous excitation of several waveguide modes can occur but do not negatively influence the lasing process
Confining CO molecules in stable orbits
Contains fulltext :
29673.pdf (publisher's version ) (Closed access
A prototype storage ring for neutral molecules
Contains fulltext :
98941.pdf (publisher's version ) (Closed access
Optical pumping of metastable nh radicals into the paramagnetic ground state
Contains fulltext :
98909.pdf (publisher's version ) (Open Access