A Kansas State University
physicist is continuing his study of atomic collisions with the help of a National
Science Foundation grant awarded under the American Recovery and Reinvestment
Act.
Brett Esry, professor of physics, received more than $282,000 from the National
Science Foundation to study what happens when atoms collide in groups of three
and four. These few-body collisions play an important role in experiments on
ultracold quantum gasses. Esry said a better theoretical understanding of these
collisions could help physicists improve design of experiments and interpretation
of what has been measured. A better understanding of ultracold quantum gasses
can potentially affect such technologically important phenomena as superconductivity
and quantum computing.
Moreover, understanding few-body collisions can improve our understanding of
chemistry in outer space, Esry said. One of the simplest reactions that forms
molecules from atoms occurs when three atoms combine to form a diatomic molecule.
That means these collisions play an important role in the chemistry of interstellar
clouds and planetary atmospheres. At higher temperatures, these reactions become
important to combustion.
Esry and his research group at K-State focus on these ultracold atomic systems
and on understanding the dynamics of atoms and molecules in intense laser fields.
Esry conducts his work in K-State's J.R. Macdonald Laboratory, which is funded
by the U.S. Department of Energy.
Esry also is receiving a grant from the U.S. Air Force Office of Scientific
Research for the project "Ultracold polar molecules: New phases of matter
for quantum information and quantum control." This effort joins 10 research
groups from these institutions: Georgetown University; the James Franck Institute
at the University of Chicago; the Joint Quantum Institute at the University
of Maryland; JILA at the University of Colorado and also affiliated with the
National Institute of Standards and Technology; Durham University in the United
Kingdom; and the University of Innsbruck in Austria.
K-State's Macdonald Laboratory also is the recipient of a grant from the U.S.
Department of Energy made possible by the American Recovery and Reinvestment
Act. The nearly $1.3 million grant builds the infrastructure of the lab, adding
a new laser system with nearly 10 times the capability of the current system,
said Itzik Ben-Itzhak, the lab's director.
"This new laser system represents a substantial investment by the Department
of Energy in our lab and its continued productivity, as well as a clear recognition
of Kansas State University's strong commitment to our program."
With these awards, Esry and the other nine faculty who work in the lab and
the larger atomic, molecular and optical physics group bring nearly $5 million
dollars per year to K-State, Ben-Itzhak said.
Posted September 30th, 2009
