There are two types of hydrogen "burning" nuclear fusion processes in stars, namely proton-proton chain and CNO cycle. Has anyone looked at the feasibility of using the CNO cycle process in a tokamak to achieve nuclear fusion?
Only small and medium Tokamaks for nuclear fusion experiments, mainly for plasma diagnostics and fusion engineering use hydrogen, but thus, almost always mixed with other gases (Ex: argon).
Tokamaks use mixtures with deuterium and tritium to obtain fusion results and try to reach the critical ignition point (become a reactor) which happened to JET in 1997 (Article High fusion performance from deuterium - tritium plasmas in JET
, http://aei.pitt.edu/64102/1/THE_JET_PROJECT.pdf and https://iopscience.iop.org/article/10.1088/2058-7058/10/11/9/pdf) and is expected with ITER (
Article Design, Challenges and Key Features for the ITER Electrical ...
, https://www-pub.iaea.org/MTCD/publications/PDF/ITER-EDA-DS-24.pdf and
Article Overview of physics basis for ITER
) in 2025.
Future Tokamak type reactors will use deuterium and tritium.