NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PUBLICATIONS

Resonant Control of Elastic Collisions in an Optically Trapped Fermi Gas of Atoms

Published

Author(s)

T Loftus, C A. Regal, J L. Ticknor, J L. Bohn, Deborah S. Jin

Abstract

We have loaded an ultracold gas of fermionic atoms into a far off resonance optical dipole trap and precisely controlled the spin composition of the trapped gas. We have measured a magnetic-field Fesh-bach resonance between atoms in the two lowest energy spin states, |9/2, -9/2 > and |9/2, -7/2>). The resonance peaks at a magnetic field of 201.5 1.4 G and has a width of 8.0 1.1 G. Using this resonance, we have changed the elastic collision cross section in the gas by nearly 3 orders of magnitude.
Citation
Physical Review Letters
Volume
88
Issue
No. 17
Pub Type
Journals

Keywords

Fermi gas, optical trap, ultracold atoms

Citation

Loftus, T. , Regal, C. , Ticknor, J. , Bohn, J. and Jin, D. (2002), Resonant Control of Elastic Collisions in an Optically Trapped Fermi Gas of Atoms, Physical Review Letters (Accessed October 15, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact [email protected].

Created April 1, 2002, Updated February 17, 2017
Was this page helpful?