▁en rich ed ▁in ▁ 1 1 B ▁and ▁contains ▁almost ▁no ▁ 1 0 B . ▁This ▁is ▁useful ▁because ▁ 1 1 B ▁is ▁largely ▁imm une ▁to ▁radiation ▁damage . ▁De ple ted ▁bor on ▁is ▁a ▁by product ▁of ▁the ▁nuclear ▁industry . ▁ ▁Pro ton - bor on ▁fusion ▁▁▁ 1 1 B ▁is ▁also ▁a ▁candidate ▁as ▁a ▁fuel ▁for ▁an e ut ron ic ▁fusion . ▁When ▁struck ▁by ▁a ▁pro ton ▁with ▁energy ▁of ▁about ▁ 5 0 0   ke V , ▁it ▁produces ▁three ▁alpha ▁particles ▁and ▁ 8 . 7   Me V ▁of ▁energy . ▁Most ▁other ▁fusion ▁re actions ▁involving ▁hydro gen ▁and ▁hel ium ▁produce ▁pen etr ating ▁neut ron ▁radiation , ▁which ▁weak ens ▁re actor ▁structures ▁and ▁indu ces ▁long - term ▁radio activity , ▁thereby ▁end ang ering ▁operating ▁personnel . ▁However , ▁the ▁alpha ▁particles ▁from ▁ 1 1 B ▁fusion ▁can ▁be ▁turned ▁directly ▁into ▁electric ▁power , ▁and ▁all ▁radiation ▁stops ▁as ▁soon ▁as ▁the ▁re actor ▁is ▁turned ▁off . ▁ ▁N MR ▁spect ro sc opy ▁Both ▁ 1 0 B ▁and ▁ 1 1 B ▁possess ▁nuclear ▁spin . ▁The ▁nuclear ▁spin ▁of ▁ 1 0 B ▁is ▁ 3 ▁and ▁that ▁of ▁ 1 1 B ▁is ▁. ▁These ▁is ot op es ▁are , ▁therefore , ▁of ▁use ▁in ▁nuclear ▁magnetic ▁reson ance ▁spect ro sc opy ; ▁and ▁spect rom eters ▁spe cially ▁adapted ▁to ▁detect ing