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We present two new primary mechanisms for the synthesis of the rare nucleus9Be, both triggered by nu-induced production of 3H followed by 4He(3H,gamma)7Liin the He shells of core-collapse supernovae. For progenitors of ~8M_sun,7Li(3H,n_0)9Be occurs during the rapid expansion of the shocked He shell.Alternatively, for ultra-metal-poor progenitors of ~11-15M_sun,7Li(n,gamma)8Li(n,gamma)9Li(e^-anti-nu_e)9Be occurs with neutrons produced by4He(anti-nu_e,e^+n)3H, assuming a hard effective anti-nu_e spectrum fromoscillations (which also leads to heavy element production through rapidneutron capture) and a weak explosion (so the 9Be survives shock passage). Wediscuss the associated production of 7Li and 11B, noting patterns in LiBeBproduction that might distinguish the new mechanisms from others.

New Primary Mechanisms for the Synthesis of Rare 9Be in Early Supernovae