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30-Jul-2006
Hypernuclei at Jefferson Lab
In 1827, Robert Brown observed that pollen grains floating in a drop of water jiggled constantly. The phenomenon became known as Brownian motion. Over 75 years later, Einstein proposed that the pollen grains were being jostled by the molecules of water. The impurity (pollen grains) Brown had added to the water allowed Einstein to deduce the presence of individual water molecules and describe at least one of their properties.

Contact: Linda Ware
ware@jlab.org
757-269-7689
DOE/Thomas Jefferson National Accelerator Facility

28-Jul-2006
Spin identity
Spin is an essential and fascinating phenomenon in the physics of elementary particles. Spin was first defined by Goudsmit and Uhlenbech in 1925, and has played a dramatic role in elementary particle physics, sometimes refuting theories and at other times supporting them. During Experiment E99-117 at Jefferson Lab, an international collaboration collected precision data on the spin of the neutron. Results from this experiment provide evidence that our current understanding of spin is not totally valid.

Contact: Linda Ware
ware@jlab.org
757-269-7689
DOE/Thomas Jefferson National Accelerator Facility

25-Jul-2006
Using instrumentation built in collaboration with JLab
College of William & Mary (CWM) scientists have found that an equivalent dose of potassium iodide five times higher than the FDA-recommended dose for humans, in the event of a nuclear accident, is needed to protect small animals effectively from radioactive iodide in medical imaging procedures. This study was performed as part of a long-term animal nuclear imaging project conducted by of biology, physics and applied science researchers from CWM and Jefferson Lab.

Contact: Linda Ware
ware@jlab.org
757-269-7689
DOE/Thomas Jefferson National Accelerator Facility

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