4-PI-IONIZATION CHAMBER - A DETECTOR FOR A KINEMATIC SEPARATOR OF HEAVY-ION REACTION-PRODUCTS

被引:20
作者
ANDREYEV, AN [1 ]
BOGDANOV, DD [1 ]
CHEPIGIN, VI [1 ]
GORSHKOV, VA [1 ]
MIKHAILOV, KV [1 ]
KABACHENKO, AP [1 ]
POPEKO, GS [1 ]
SARO, S [1 ]
TERAKOPIAN, GM [1 ]
YEREMIN, AV [1 ]
ZEINALOV, SS [1 ]
机构
[1] COMENIUS UNIV BRATISLAVA, DEPT MATH & PHYS, CS-80100 BRATISLAVA, CZECHOSLOVAKIA
关键词
D O I
10.1016/0168-9002(93)91313-C
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
Construction and properties of a double ionization chamber (DIC) are described. Heavy ion fusion-evaporation reaction products obtained at the focal plane of the kinematic separator VASSILISSA enter the DIC volume through a thin plastic window. After their thermalization in the gas, they drift in the electric field to the DIC cathode. Their alpha-decay and/or spontaneous fission are detected in 4pi-geometry in two ionization chambers, divided by the common cathode. Using DIC the alpha-decay of Bi and Pb isotopes produced in the fusion reactions Ar-40 + Tb-153 and Ca-40 + Eu-153 were detected. A new isomer, 189mBi was observed.
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页码:125 / 131
页数:7
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