To be honest, my sources are kind of old:

http://rspa.royalsocietypublishing.org/content/154/881/246.full.pdf

http://rspa.royalsocietypublishing.org/content/154/881/279.full.pdf

But I’m not aware of any newer work on the D+B10 reaction. I get the impression that many nuclear reactions haven’t been studied intensively since the 1950s, or even the 1930s, in some cases, but I could be wrong about that. As for the boron-10 shielding the neutrons in a DPF plasmoid, that’s an interesting idea, and, I presume, one that lies in the realm of the theoretical for now. Perhaps it could be studied after we find out how well the p+B11 reaction works in the FF-1 device.