PAC homepage › Forums › PAC curves without hyperfine interaction › PAC This topic has 0 replies, 1 voice, and was last updated 5 years, 4 months ago by Giel. Viewing 1 post (of 1 total) Author Posts May 13, 2018 at 4:06 pm #1655 Score: 0 GielParticipant a) Because of the exponential decay of the excited state. b) Because the 1-3 detectors both lie along the direction of the nuclear spin. The probability of gamma-emission is highest in these directions. 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