State selective detection of velocity filtered ND${}_3$ molecules

Abstract

Translationally cold and slow ND3 is prepared by filtering the slow molecules from a thermal gas-phase sample using a curved electrostatic hexapole guide. This filter, like the curved quadrupole guide introduced by Rempe et al. in 2003, selects molecules by their forward velocity and effective electric dipole moment. Here we describe two main modifications with respect to previous work: 1. A hexapole guide is used instead of a quadrupole, thus producing a harmonic potential for the linearly Stark-shifted levels of ND3. The curved guide is combined with a straight hexapole guide with independent high-voltage supplies to allow for band-pass velocity filtering. 2. State-selective laser ionization is used to obtain time- and state selective detection of the guided molecules. This enables the experimental determination of the rotational state population of the guided molecules.

9 pages, 7 figures

References in corpus (4)

• Deceleration of neutral molecules in macroscopic traveling traps
• Electrostatic extraction of cold molecules from a cryogenic reservoir
• Magnetically Controlled Exchange Process in an Ultracold Atom-Dimer Mixture
• Velocity-selected molecular pulses produced by an electric guide

Cited by in corpus (7)

• Manipulation of Molecules with Electromagnetic Fields
• Dynamics of gas phase Ne${}^{\ast }$ + NH${}_3$ and Ne${}^{\ast }$ + ND${}_3$ Penning ionization at low temperatures
• Continuous Centrifuge Decelerator for Polar Molecules
• A traveling wave decelerator for neutral polar molecules
• Nondestructive Detection of Polar Molecules via Rydberg Atoms
• 3D printed beam splitter for polar neutral molecules
• Thermometry of Guided Molecular Beams from a Cryogenic Buffer-Gas Cell