Physics Division News Archive


CARIBU opens

New picture of atomic nucleus emerges

When most of us think of an atom, we think of tiny electrons whizzing around a stationary, dense nucleus composed of protons and neutrons, collectively known as nucleons. A collaboration between the U.S. Department of Energy's Argonne and Thomas Jefferson National Laboratories has demonstrated just how different reality is from our simple picture. More »

CARIBU opens

Krypton-81 isotope can help map underground waterways

Cataloguing underground waterways, some of which extend for thousands of miles, has always been difficult—but Argonne scientists are mapping them with some unusual equipment: lasers and a rare isotope. More »


CARIBU opens

Argonne's CARIBU facility opens to study rare nuclei

A stream of highly unusual ions shot through a tiny nozzle at 76 million miles per hour—and CARIBU, a facility designed to study special nuclei normally only created in stars, officially opened for business. See the corresponding Argonne News article for more information. CARIBU has also been featured on DOE's EnergyBlog.

Atom Trap Trace Analysis

Atom Trap Trace Analysis of 39Ar

Atom Trap Trace Analysis has reached new sensitivity limits in measuring the abundance of argon-39, a desirable isotope for dating environmental samples on the time scale of a few hundred years. More »


Dark Energy

Void that is truly empty solves dark energy puzzle

"New Scientist" reports on a recent publication in Physical Review C concerning the contribution of quarks and gluons to the vacuum energy of the universe. "In our picture, quarks and gluons can't flutter in and out of existence unless they are inside hadrons" explains co-author Craig Roberts of Argonne National Laboratory. This insight might help in solving the puzzle of dark energy. more ...

Richard Vondrasek at the CARIBU Charge Breeder

Argonne's CARIBU charge breeder breaks world record for efficiency

Scientists at the U.S. Department of Energy’s (DOE) Argonne National Laboratory have pushed the limits of charge breeding and broken a long-standing world record for ionization efficiency of solids. more ...

Helios Spectrometer

First Experiment with HELIOS: The Structure of 13B

The helical orbit spectrometer, HELIOS, at the Argonne Tandem Linac Accelerator System is a new device designed to study reactions of unstable nuclei with high energy resolution. In a paper appearing in Physical Review Letters, the HELIOS collaboration now presents the results of a first experiment demonstrating HELIOS’ capabilities. This work is featured in APS Physics and IOP


ATR Core2010 Tom W. Bonner Prize awarded to Steven Pieper and Robert Wiringa

ATR CoreQuarks influenced by their neighborhood

ATR CoreFission for the future
StarsNuclear star gazing
Zheng-Tian LuZheng-Tian Lu earns Francis M. Pipkin Award for work with radioactive atomic species and applications
CARIBU Charge BreederIons stopped, reaccelerated in charge breader for CARIBU


Neutron Charge Density PlotJourney to the center of the neutron
Superconducting CavitiesNew component design could reduce cost of proposed Facility for Rare Isotope Beams
Nucleus Argonne scientists develop way to predict properties of light nuclei
Helium-8 Helium-8 study gives insight into nuclear theory, neutron stars
Susan FischerKim Lister Chicago mayor, council honor Argonne physicists for creating innovative science program at city high school


Walter Henning Argonne's Walter Henning receives award from German president
GammasphereArgonne scientists take giant step forward in understanding exotic nuclei
Gas CatcherATLAS upgrade allows scientists to reach even further for the stars
Radium TrapLaser-trapping of rare element gets unexpected assist