%0 Journal Article
%T Development of a system of measuring 37Ar by spectrum method<br>37Ar测量系统的研制与能谱测量方法研究
%A Xiang Yong-Chun
%A Gong Jian
%A Li Wei
%A Bian Zhi-Shang
%A Hao Fan-Hu
%A Wang Hong-Xi
%A Wang Qian
%A Xiong Zong-Hua
%A <br>向永春
%A 龚 建
%A 李 伟
%A 卞直上
%A 郝樊华
%A 王红侠
%A 王 茜
%A 熊宗华
%J 物理学报
%D 2008
%I 
%X A portable system of measuring 37Ar has been developed. Measurement of 37Ar is realized by the proportional counter and spectrum analysis method. Plateau length, plateau slope and background have been analyzed. Compared with traditional counting method, the present method has the advantages of visibility, longer plateau length and smaller plateau slope. background is reduced by an order of magnitude which decreases the detection limit. Working gas of 10% methane improves the peak shape. Greater concentration of methane is not necessary because it does not make the peak shape better but needs higher working voltage.
%K gas proportional counter
%K 37Ar
%K plateau curve
%K spectrum method<br>气体正比计数管，
%K 37Ar，
%K 坪曲线，
%K 能谱法
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=04C3BABB0F3E18588EFB7F8BEE0CEEF1&yid=67289AFF6305E306&vid=11B4E5CC8CDD3201&iid=0B39A22176CE99FB&sid=141C24EC1980F602&eid=7B927C26AC9ED104&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=7