News by Subject Chemistry & Physics

New simulations led by researchers working at the Berkeley Lab and UC Berkeley have combined decades-old theories to provide new insight about the driving mechanisms in plasma jets that allows them to steal energy from black holes' powerful gravitational fields and propel it far from their gaping mouths.

This manuscript attempts to present an overview of availability sources of 225Ac and production methods by which additional supplies might be made available to the community of clinical researchers seeking their application in the treatment of human disease.

Researchers at University of Tsukuba and Australian National University resolved a longstanding puzzle of nuclear fission why nuclear fission of heavy (actinide) nuclei results predominantly in asymmetric mass-splits. These findings may explain surprising bservations of asymmetric fission of lighter than lead nuclei.

A team of scientists has for the first time measured the elusive weak interaction between protons and neutrons in the nucleus of an atom. They had chosen the simplest nucleus consisting of one neutron and one proton for the study. Through a unique neutron experiment at Oak Ridge National Laboratory, experimental physicists resolved the weak force between the particles at the atom's core, predicted in the Standard Model that describes the elementary particles and their interactions.

An international research collaboration including Osaka University has reported the first experimental evidence that the strongly correlated proton-neutron pairs found in an atomic depend on nuclear structure. The experiment, conducted on a new beam line at the Osaka cyclotron facility, demonstrated the dominance of tensor interactions in the neutron pickup reaction. It is hoped that the findings will improve our understanding of neutron stars and other celestial bodies.