Home › Forums › Hyperfine course › magnetic hyperfine interaction › in free atoms – task 1 › L and S orientation This topic has 0 replies, 1 voice, and was last updated 1 month ago by Theo Mulkens. Viewing 1 post (of 1 total) Author Posts March 9, 2025 at 2:40 pm #6293 Theo MulkensParticipant L and S are vectors. So if the sum of them is 0 (J=0) it means they are antiparallel. Using the same reasoning, we would find L and S are perpendicular for J=1 and parallel for J=2. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In