State selective detection of velocity filtered ND$ 3$ molecules - Physics > Atomic PhysicsReport as inadecuate




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Abstract: Translationally cold and slow ND3 is prepared by filtering the slow moleculesfrom a thermal gas-phase sample using a curved electrostatic hexapole guide.This filter, like the curved quadrupole guide introduced by Rempe et al. in2003, selects molecules by their forward velocity and effective electric dipolemoment. Here we describe two main modifications with respect to previous work:1. A hexapole guide is used instead of a quadrupole, thus producing a harmonicpotential for the linearly Stark-shifted levels of ND3. The curved guide iscombined with a straight hexapole guide with independent high-voltage suppliesto allow for band-pass velocity filtering. 2. State-selective laser ionizationis used to obtain time- and state selective detection of the guided molecules.This enables the experimental determination of the rotational state populationof the guided molecules.



Author: Benjamin Bertsche, Andreas Osterwalder

Source: https://arxiv.org/







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