Controlled fusion has been difficult to achieve primarily due to
A) the weak interaction.
B) the high temperatures required to overcome Coulomb repulsion.
C) negligible proton cross section.
D) the difficulty of slowing the fusion neutrons.

Question

Quizplus · Accepted Answer

Controlled fusion requires very high temperatures to overcome the Coulomb repulsion between positively charged nuclei, allowing them to come close enough for the strong nuclear force to bind them together.

Controlled Fusion Has Been Difficult to Achieve Primarily Due to