Stark broadening of high-members of the helium diffuse series in divertor plasmas

International audienceStark profiles of high-members (n≥7) of the helium triplet diffuse series 1s2p 3 P @BULLET −1snd 3 D are calculated for tokamak divertor conditions using dipole reduced matrix elements obtained with a hydrogenic approximation. It is shown that the socalled " standard model " of Stark broadening is particularly suited to the description of the isolated lines 1s2p 3 P @BULLET − 1snd 3 D with n = 8 − 10. Applications to spectroscopic diagnostics in existing and future magnetic fusion-oriented devices like ITER are discussed