In the batch experiment with W, Ta, Hf, Lu and Mo as radiotracers, a new rapid radiochemical isolation procedure for element tungsten has been developed by using radiochemical separation method and γ spectrum measure...In the batch experiment with W, Ta, Hf, Lu and Mo as radiotracers, a new rapid radiochemical isolation procedure for element tungsten has been developed by using radiochemical separation method and γ spectrum measurement technique.With Voltalef powder carried 2% (W/V)BPHA(Benzoylphenylhydroxylamine)- C5H11OH(iso-amyl-alcohol) organic solution, radioactive W was adsorbed on the Voltalef column in the 4mol/L hydrochloric acid system. Hf, Lu and Mo fractions passed through the Voltalef column rapidly and partial Ta activities retained on the Voltalef column, respectively. Following this, W fraction was eluted completely with 1%Na3C6H5O7(sodium citrate)-5%(W/V) NH4OH solution and no Hf, Lu, Ta and Mo activities passed through the Voltalef extraction chromatographic column. The procedure was simultaneously used to isolate W from Er target bombarded with a low energy 12C beams. By means of this separation system, it is one of the possible way to develop an isolation procedure of Sg, supposing the chemical property of Sg is similar to that of tungsten.展开更多
Freshly-cleaved HOPG crystals were irradiated with Ni, Zn, Xe and U ions of specific energy 11.4 MeV/u at the linear accelerator UNILAC and with Ne, Cr, Zn, Xe ions (1.4 MeV/u) at the high-charge injector HLI, both fa...Freshly-cleaved HOPG crystals were irradiated with Ni, Zn, Xe and U ions of specific energy 11.4 MeV/u at the linear accelerator UNILAC and with Ne, Cr, Zn, Xe ions (1.4 MeV/u) at the high-charge injector HLI, both facilities are in operation at GSI, Darmstadt. The irradiation with Fe ions was performed at HIRFL (22 MeV/u) of IMP, Lanzhou. All irradiations were performed at room temperature and under beam incidence展开更多
文摘In the batch experiment with W, Ta, Hf, Lu and Mo as radiotracers, a new rapid radiochemical isolation procedure for element tungsten has been developed by using radiochemical separation method and γ spectrum measurement technique.With Voltalef powder carried 2% (W/V)BPHA(Benzoylphenylhydroxylamine)- C5H11OH(iso-amyl-alcohol) organic solution, radioactive W was adsorbed on the Voltalef column in the 4mol/L hydrochloric acid system. Hf, Lu and Mo fractions passed through the Voltalef column rapidly and partial Ta activities retained on the Voltalef column, respectively. Following this, W fraction was eluted completely with 1%Na3C6H5O7(sodium citrate)-5%(W/V) NH4OH solution and no Hf, Lu, Ta and Mo activities passed through the Voltalef extraction chromatographic column. The procedure was simultaneously used to isolate W from Er target bombarded with a low energy 12C beams. By means of this separation system, it is one of the possible way to develop an isolation procedure of Sg, supposing the chemical property of Sg is similar to that of tungsten.
文摘Freshly-cleaved HOPG crystals were irradiated with Ni, Zn, Xe and U ions of specific energy 11.4 MeV/u at the linear accelerator UNILAC and with Ne, Cr, Zn, Xe ions (1.4 MeV/u) at the high-charge injector HLI, both facilities are in operation at GSI, Darmstadt. The irradiation with Fe ions was performed at HIRFL (22 MeV/u) of IMP, Lanzhou. All irradiations were performed at room temperature and under beam incidence
