Can HHe+ exist at High Pressure: exploration of high pressure induced HF-He compounds

Abstract HHe+ is considered as the strongest acid and most powerful proton donor known to human. Whether HHe+ exists at planetary high pressure environment is a quite important problem in physics, chemistry and planetary sciences. Here, using the ab initio evolutionary algorithm USPEX package, we searched HF-He system, which was reported as the most possible candidate to contain HHe+. The calculation proved HHe+ cannot form at pressure