Physics @ Berkeley
Events in Physics
Title: 290F Atomic Physics Seminar    (Seminar)
Start Date: 11/16/2005
End Date: 11/16/2005
Time: 11:00 am
Location: 290F Atomic Physics Seminar
Speaker: Eric Abraham
Affiliation: University of Oklahoma
Contact Person: Daniel W. Tatum   (510) 643-4906
Details:

" Production of Cold Molecules by Extraction From a Thermal Source"

Laser cooling and trapping has revolutionalized many areas of atomic physics.  However, relatively few atomic species can be easily laser cooled due to the requirement of a simplified internal structure to prevent optical pumping into dark states.  The creation of sources of cold molecules promises not only to bring the ultracold revolution to molecular physics, but the complexities of molecular systems can add new dimensions to current ultracold studies.  I will present our work on producing cold samples of nitric oxide.  Instead of direct cooling, the cold fraction is extracted from a thermal gas using dc electric fields to deflect the slow moving particles from an effusive molecular beam.  We measure the temperature of the output of the source by long-lived Rydberg state time-of-flight spectroscopy.