From: Alain
… even if very few Li6 was produced, if most natural Li6/7 is gone, it can looks like a huge enrichment while it is tiny local production. Yes, I thought of that too. Unfortunately, in scouring the literature, Li6 does not show up as the product of any known nuclear reaction of nickel or aluminum or alumina. Plus if you look at the Counts in the Appendix - lots of it was produced. The Counts are 4 times higher than all of the nickel. The best if not the only explanation is that the sample was compromised by the addition of Li6.
