Accession Number : ADA603578


Title :   Understanding Molecular-Ion Neutral Atom Collisions for the Production of Ultracold Molecular Ions


Descriptive Note : Final rept. 1 Oct 2010-30 Sep 2013


Corporate Author : CALIFORNIA UNIV LOS ANGELES


Personal Author(s) : Hudson, Eric R


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a603578.pdf


Report Date : 03 Feb 2014


Pagination or Media Count : 10


Abstract : This project was superseded and replaced by another ARO-funded project of the same name, which is still continuing. The goal of this project was to explore ultracold collisions and chemistry between atoms and ions, to enable a novel cooling method, proposed by our group, for producing ultracold molecular ions. During this effort period, we experimentally and theoretically studied ultracold chemistry and collision in two important systems Ca + Yb+ and Ca + Ba+. As a result of this work, we have a gained a clearer understanding of both the fundamental physics important for these collisions and the requirements for producing stable, long-lived ultracold ion-neutral systems. Building on this work, we have recently performed a proof-of-principle experiment that has demonstrated sympathetic cooling of both the translational and vibrational motion of BaCl+ molecules through collisions with ultracold gases. The results of this experiment are very promising and indicate that the proposed cooling method is as efficient as expected. Work now has turned to optimizing the experimental system for the production of ultracold, ground-state molecular ions.


Descriptors :   *ATOMS , *MOLECULAR IONS , COLLISIONS , COOLING , EFFICIENCY , GROUND STATE , MOLECULES , QUANTUM CHEMISTRY , QUANTUM INFORMATION SCIENCE , VIBRATION


Subject Categories : Atomic and Molecular Physics and Spectroscopy


Distribution Statement : APPROVED FOR PUBLIC RELEASE