摘要
描述了一种将用于兰州放射性束流线较重离子鉴别的多阳极横向场电离室。对其性能进行了初步测试,得到该电离室有较长的坪区和较好的能量分辨。在10~4Pa的P10工作气体(10％CH_4+90％Ar)下,坪区长度为700V。对^(244)Cm α放射源,在第4片阳极对应的灵敏区域能量损失为1.30MeV,能量分辨41.1keV,相对能量分辨约3.16％。
A transverse field gas ionization chamber for particle identification at the Radioactive Ion Beam Line in Lanzhou (RIBLL) is described. It consists of cathode, Frisch grid and 4 anodes (20,40,80,136mm). The MAIC was measured at 104Pa of operating gas P10(10 % CH4 + 90 % Ar) . By setting the voltage of anode at 100V, the plateau of the MAIC is 700V varing from - 300V to - 1000V. With voltage of anode at + 225V and the voltage of cathode at -700V, the energy resolution of MAIC is 41.1keV for 1 .30 MeV 244 Cm a and relative energy resolution (E/E) is 3.16% at the fourth anode.
出处
《高能物理与核物理》
CSCD
北大核心
2003年第10期905-908,共4页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金(19975059
19825115
19735051)
国家重点基础研究发展规划项目(G2000077400
G2000077401
G2000077404)资助~~
