Possible Langmuir oscillations in the He spectral line profile N.C. Woolsey, J. Howe, D.M. Chambers, C. Courtois, E. Förster, C.D. Gregory, I.M. Hall, O. Renner et I. UschmannJ. Phys. IV France, 133 (2006) 989-991DOI: https://doi.org/10.1051/jp4:2006133199
spectral line
profile
spectral line
profile