α-particle is Beaten Out (IMAGE) Lomonosov Moscow State University Caption As a result of a collision in the experiment α-particle was beaten out of 8He nuclei, leaving a system of 4 neutron (tetraneutron). Credit Andrey Shirokov Usage Restrictions Credit: Andrey Shirokov License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.