Laser-focused look at spinning electrons shatters world record for precision sciencedaily.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from sciencedaily.com Daily Mail and Mail on Sunday newspapers.
The team achieved an impressive precision of 0.36 percent in measuring electron beam polarization using Compton polarimetry. Researchers achieve record-breaking electron beam polarization measurement, setting the stage for future Jefferson Lab experiments.
Using heavy-ion collisions at the LHC, scientists determine the thickness of neutron skin in lead-208 nuclei phys.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from phys.org Daily Mail and Mail on Sunday newspapers.
Lead-208 has an intriguing nucleus. It is neutron rich, containing 82 protons and 126 neutrons. One of its more interesting properties is its structure: its centre is composed of both protons and neutrons, but at its edge, there is a diffuse shell of mostly neutrons. Scientists call this the neutron “skin.” Research into the neutron skin can help deepen our understanding of quantum chromodynamics, that is, how quarks and gluons (exchange particles of the strong force) in the nucleus behave. This can also have applications in astrophysics, giving insight into the structure of neutron stars – the very dense core left behind after a star between 10 and 25 times the mass of the Sun has undergone a supernova explosion. Using data from heavy-ion runs of the Large Hadron Collider, theoretical physicists at CERN have been able to determine the thickness of the lead-208 neutron skin to be 0.217±0.058 femtometres. This is in line with previous measurements obtained by other collaborations
Researchers Find That Atomic Nucleus Is Thin Skinned forbes.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from forbes.com Daily Mail and Mail on Sunday newspapers.