Nuclear Magnetic Resonance ANIMATED ILLUSTRATIONS MS Powerpoint Presentation Files Uses Animation Schemes as available in MS XP or MS 2003 versions A class room educational material File-8 FT NMR-I http://ugc-inno-nehu.com/links_from_web.html 12/28/2010 8:47:59 AM Dr.Aravamudhan

y Pulse x y x z y y y -x y -y Next sllde… Pulse Reference Acquisition Real part spectrum x y x cos z The reference phases were exactly along the Axis, thus phase difference between signal and reference was 0,π/2,π or 3π/2 y y sin If the phase difference was not integer multiple of π/2, then ? Next sllde… y -x -cos y -y -sin 12/28/2010 Dr.S.Aravamudhan

t0 t1 ω1 t2 t3 t4 ω2 ω2 M0 y x (π/2)x (π/2)y My Evolution t1 (π/2)y R mixing (π/2)y Prepararion Acquisition t 2 My Evolution t1 (π/2)y M0 R Mc Mz y Only cosine component is acquired x t0 Red dots constitute time domain points along t1 t1 ω1 t2 t3 t4 ω2 ω2 12/28/2010 Dr.S.Aravamudhan