%0 Journal Article
%T ACCURATE AND QUICK SETTING OF MAGIC ANGLE<br>魔角的准确快速确定
%A YE CHAO-HUI
%A QIU JIAN-QING
%A LI LI-YUN
%A SUN BO-QIN
%A <br>叶朝辉
%A 裘鉴卿
%A 李丽云
%A 孙伯勤
%J 物理学报
%D 1984
%I 
%X The FID arising from the quadrupole interaction is broken into a rotational echo train under the slow rotation condition, and the number of these echoes increases when adjusting the angle between the rotational axis and the applied magnetic field towards the Magic Angle. Thus, a accurate and quick setting of the Magic Angle in MAS-NMR experiments can he easily obtained by this phenomenon. It is theoretically explained by analysing the FID of a spin-1 system. The setting accuracy within 0.05°with a per-deuterated HMB sample is experimentally demonstrated.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=B37502E219836472497F2C125BC39189&yid=36250D1D6BDC99BD&vid=27746BCEEE58E9DC&iid=59906B3B2830C2C5&sid=BCF7BCA77FA8F9BA&eid=0D56350A4FA1FCC9&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=0