Preparation of an ultra-cold sample of ammonia molecules for precision measurements

Marina Quintero-Perez, Thomas E. Wall, Steven Hoekstra, Hendrick L. Bethlem*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

We present experiments in which an ultra-cold sample of ammonia molecules is released from an electrostatic trap and recaptured after a variable time. It is shown that, by performing adiabatic cooling before releasing the molecules and adiabatic re-compression after they are recaptured, we are able to observe molecules even after more than 10 ms of free expansion. A coherent measurement performed during this time will have a statistical uncertainty that decreases approximately as the inverse of the square root of the expansion time. This offers interesting prospects for high-resolution spectroscopy and precision tests of fundamental physics theories. (C) 2014 Elsevier Inc. All rights reserved.

Original languageEnglish
Pages (from-to)112-115
Number of pages4
JournalJournal of Molecular Spectroscopy
Volume300
DOIs
Publication statusPublished - Jun-2014

Keywords

  • Ammonia
  • Stark deceleration
  • Cold molecules
  • High-resolution spectroscopy
  • HIGH-RESOLUTION SPECTROSCOPY
  • OPTICAL CLOCKS
  • MANIPULATION
  • METROLOGY
  • BEAMS

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