Neutrinos from boron-8 beta decays within the Sun are an important background to dark matter direct detection experiments.^ a b c Decay mode shown is energetically allowed, but has not been experimentally observed to occur in this nuclide.^ Immediately decays into two α particles, for a net reaction of 12.^ Immediately decays into two α particles, for a net reaction of 9.^ Intermediate product of a branch of proton-proton chain in stellar nucleosynthesis as part of the process converting hydrogen to helium.
^ Subsequently decays by double proton emission to 4.^ This isotope has not yet been observed given data is inferred or estimated from periodic trends.^ # – Values marked # are not purely derived from experimental data, but at least partly from trends of neighboring nuclides (TNN).^ ( ) spin value – Indicates spin with weak assignment arguments.^ Bold symbol as daughter – Daughter product is stable.^ # – Atomic mass marked #: value and uncertainty derived not from purely experimental data, but at least partly from trends from the Mass Surface (TMS).^ ( ) – Uncertainty (1 σ) is given in concise form in parentheses after the corresponding last digits.) while those with mass above 11 mostly become carbon.Ī chart showing the abundances of the naturally occurring isotopes of boron. Those isotopes with mass below 10 decay into helium (via short-lived isotopes of beryllium for 7 All other isotopes have half-lives shorter than 17.35 ms. , with a half-life of only 771.9(9) ms and 12 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 8 , the latter of which makes up about 80% of natural boron. Boron ( 5B) naturally occurs as isotopes 10
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