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建成了一套在线气相热色谱分离装置。利用该装置,完成了气相热色谱管同气体喷射传输系统的耦合工作。带有吸附了反应余核的添加剂的气体通过毛细管被送到气相热色谱管,在这个加热石英管中,原子被解吸并且沿具有设计温度的石英管传输,只有不凝结的元素被传出管外并沉积在水冷轮上,以一组Si(Au)探测器测出α谱。实验中,从47MeV/u ̄(12)C+ ̄(209)Bi反应余核中分离出了Po元素,测到了 ̄(197)po ̄m(T_(1/2)=26s)、 ̄(198)po(T_(1/2)=1.76min)和 ̄(199)po ̄m(T_(1/2)=4.2min)的α谱。
Built a set of online gas chromatography thermal chromatographic separation device. The device was used to complete the coupling of gas chromatography tube with gas jet transmission system. The gas with the additive to which the reaction core is adsorbed is sent through a capillary tube to a gas-phase thermochromator, where the atoms are desorbed and transported along a quartz tube of a design temperature, only the non-condensable elements are transported out of the tube Outside and deposited on a water-cooled wheel, the alpha spectrum was measured with a set of Si (Au) detectors. In the experiment, Po elements were isolated from the 47MeV / u ~ (12) C + ~ (209) Bi reaction nuclei and ~ (197) po ~ m ) Po (T ½ (1/2) = 1.76 min) and ¯ (199) po¯m (T ½ (1/2) = 4.2 min).