double ring homepage › Forums › the double ring › double ring This topic has 0 replies, 1 voice, and was last updated 5 years, 7 months ago by Qiming Sun. Viewing 1 post (of 1 total) Author Posts February 27, 2018 at 3:29 am #805 Score: 0 Qiming SunParticipant alpha>0: when the dumb-bell is parallel to the z-axes alpha=0: quadrupole term has no contribution alpha<0: when the dumb-bell is perpendicular to the z-axes 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