LAUSR

The hydrogenic two‐point model (H‐2PM), an analytical model for the scrape‐off layer that predicts a common electron and ion temperature and density along a flux tube from a target temperature and density, is adapted to a single‐species helium (He) model, preserving the 2PM assumptions and analytical nature. Across a range of densities and heating powers, the predicted Te$$ {T}_e $$ is within 20eV$$ 20\kern0.3em \mathrm{eV} $$ of upstream measurements by high‐resolution Thomson scattering (HRTS) for low‐confinement He plasmas performed in JET ITER‐like wall (JET‐ILW). For high‐recycling conditions, He‐2PM predictions of ne$$ {n}_e $$ were within 10% of the Li‐beam diagnostic measurements, excluding the near‐SOL, when assuming Zeff=1$$ {Z}_{\mathrm{eff}}=1 $$ , suggesting the divertor SOL was not fully ionised in the JET‐ILW He plasmas.