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Molecular-ion trap-depletion spectroscopy of BaCl<sup>+</sup>
Chen, K Schowalter, SJ Kotochigova, S Petrov, A Rellergert, WG Sullivan, ST Hudson, ER
Chen, K
Schowalter, SJ
Kotochigova, S
Petrov, A
Rellergert, WG
Sullivan, ST
Hudson, ER
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Journal Article
Date
2011-03-09
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10.1103/PhysRevA.83.030501
Abstract
We demonstrate a simple technique for molecular-ion spectroscopy. BaCl + molecular ions are trapped in a linear Paul trap in the presence of a room-temperature He buffer gas and photodissociated by driving an electronic transition from the ground X 1Σ+ state to the repulsive wall of the A 1Πstate. The photodissociation spectrum is recorded by monitoring the induced trap loss of BaCl+ ions as a function of excitation wavelength. Accurate molecular potentials and spectroscopic constants are determined. A comparison of the theoretical photodissociation cross sections with the measurements shows excellent agreement. This study represents an important step toward the production of ultracold ground-state molecular ions. © 2011 American Physical Society.
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Physical Review A - Atomic, Molecular, and Optical Physics
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