%0 Journal Article
%T ELECTRONIC PARAMAGNETIC RESONANCE SPECTROGRAPH WITH FREQUENCY AND MAGNETIC FIELD MODULATION<br>调频调场式电子顺磁共振波谱仪
%A TUONG TAI-CHIAN
%A <br>董太乾
%J 物理学报
%D 1963
%I 
%X This paper presents a new spectrograph of electronic paramagnetic resonance. Its character is the application of combined frequency and magnetic field modulation. Therefore the structure is simplified. Because the balance adjustment of magic tee is used and a positive voltage is added on the microwave crystal diode, its noise is then reduced near the level of thermal noise. The signal of 5×10-9M. DPPH may be observed on the oscillograph. The ratio of signal to noise is 2:1. The operation frequency is 9690 Mc,/s.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=6AAF2CA38455AB02&yid=49BEA5698E310F48&vid=2A8D03AD8076A2E3&iid=59906B3B2830C2C5&sid=43AADF4B53A8BF6F&eid=CE504F5B1E192581&journal_id=1000-3290&journal_name=物理学报&referenced_num=1&reference_num=0