Tag Archive for 'Tetraneutron'

Schematic illustration of the quasi-elastic reaction investigated by Duer et al. Top: quasi-elastic scattering of the helium-4 (4He) core from a helium-8 (8He) projectile off a proton target in the laboratory frame. The length of the arrows represents the momentum per nucleon (the velocity) of the incoming and outgoing particles. Zbeam is the beam axis. Bottom: the equivalent p-4He elastic scattering in their center-of-mass frame, where we consider reactions at backward angles close to 180°. In this frame, the momentum of the proton balances that of 4He, Pp=−P4He, that is, the proton is four times faster than 4He. Image credit: Duer et al., doi: 10.1038/s41586-022-04827-6.

Physicists Observe Elusive Four-Neutron System: Tetraneutron

Jun 23, 2022 by Enrico de Lazaro

Physicists using the Superconducting Analyzer for Multi-particles from Radio Isotope Beams (SAMURAI) in Japan have experimentally observed a resonance-like...

Tetra-neutron system produced in double-charge exchange reaction 4He(8He,8Be). Image credit: Susumu Shimoura / University of Tokyo.

Physicists Demonstrate Existence of Tetraneutron

Nov 4, 2016 by News Staff

An Iowa State University-led team of physicists has demonstrated the quasi-stable existence of a tetraneutron, a subatomic structure once thought unlikely...