Isotopes of boron
naturally occurs as isotopes and, the latter of which makes up about 80% of natural boron. There are 13 radioisotopes that have been discovered, with mass numbers from 7 to 21, all with short half-lives, the longest being that of, with a half-life of only and with a half-life of. All other isotopes have half-lives shorter than. Those isotopes with mass below 10 decay into helium while those with mass above 11 mostly become carbon.
List of isotopes
Boron-8
Boron-8 is an isotope of boron that undergoes β+ decay to beryllium-8 with a half-life of. It is the strongest candidate for a halo nucleus with a loosely-bound proton, in contrast to neutron halo nuclei such as lithium-11.Although boron-8 beta decay neutrinos from the Sun make up only about 80 ppm of the total solar neutrino flux, they have a higher energy centered around 10 MeV, and are an important background to dark matter direct detection experiments. They are the first component of the neutrino floor that dark matter direct detection experiments are expected to eventually encounter.