D. Filges has written:

'Handbook of spallation research' -- subject(s): Spallation (Nuclear physics), Laboratory manuals

Synthetic elements are usually radioactive, but not necessarily so. It is conceivable for a non-radioactive neutral atom to be produced by a nuclear spallation reaction.

Yes, there are several methods for Nuclear transmutation a few of them being Nuclear Spallation, Alpha Decay, Beta Decay, and Antimatter annihilation.

Abd Elhafid Ibrahim Elfadhli has written:

'The effect of yttrium on the spallation of oxide scales formed on iron-chromium aluminium alloys at elevated temperatures'

Boron has 5 protons.It is a non metal element.