For the first time, the extremely neutron-rich hydrogen isotope ⁶H has been produced and measured using an electron ...

Neutrinos and antineutrinos are elementary particles with small but unknown mass. High-precision atomic mass measurements at ...

In this method, an electron beam with an energy of 855 megaelectronvolts ... The new measurement provided a clear signal of ⁶H with a very low ground-state energy, indicating a stronger ...