In 2002, 200 kV heavy ion accelerator was operated for 1 300 h for the study on ion implantation modification. The improvement and maintenance of the accelerator were made. 4 species of ion beams(C+, N+, P+ and Fe+) w...In 2002, 200 kV heavy ion accelerator was operated for 1 300 h for the study on ion implantation modification. The improvement and maintenance of the accelerator were made. 4 species of ion beams(C+, N+, P+ and Fe+) were provided.The main experiments are .is follows.1. Synthesis of C-N compounds by high-energy heavy ion irradiation.Diamond-like carbon thin film and graphite carbon samples were implanted with N+ ion beams at room temperature. The energy of implanted ion is 120 keV and 100 keV. The dosage range is from 5×1017 to展开更多
Y1.6Ca1.4V 0.45Sn0.5Fe4.05O12 is irradiated by 0.56 GeV carbon ion. The irradiation effect is investigated by Mossbauer spectroscopy. The irradiation results in an isotropic distribution of the hyperfine magnetic fiel...Y1.6Ca1.4V 0.45Sn0.5Fe4.05O12 is irradiated by 0.56 GeV carbon ion. The irradiation effect is investigated by Mossbauer spectroscopy. The irradiation results in an isotropic distribution of the hyperfine magnetic field. The hyperfine magnetic fields decrease after the irradiation due to the change of supertransferred field. After the irradiation, the chain Fe(a)-oxygen-Fe(d) become longer and it leads to decrease of the supertransferred field.展开更多
We have proposed a novel technique, 'low energy ion implantation + swift heavy ion irradiation', for synthesizing new structures in atom mixed materials. Recently, we used this technique to synthesize carbon-n...We have proposed a novel technique, 'low energy ion implantation + swift heavy ion irradiation', for synthesizing new structures in atom mixed materials. Recently, we used this technique to synthesize carbon-nitrides such as a and β-C3N4. As we know, the ratio of nitrogen (N-) to carbon (C-) atoms is one of the key parameters for synthesizing the phase a or β-C3N4. The ideal ratio of N- to C-atoms, N/C, is 4/3. However, this value could not be easily achieved on account of the solubility, diffusion and release of the nitrogen atoms展开更多
We have proposed a novel technique, 'low energy ion implantation+swift heavy ion irradiation', for synthesizing new structures in atom mixed materials. The schematic procedure of this technique is shown in Fig...We have proposed a novel technique, 'low energy ion implantation+swift heavy ion irradiation', for synthesizing new structures in atom mixed materials. The schematic procedure of this technique is shown in Fig.1. In detail, the original samples were prepared at first (1), and then they were implanted at room temperature (RT) with keV ions (2) after that irradiated at RT with high-energy heavy ions (3). After high-energy展开更多
In the present work, "low energy ion implantation+swift heavy ion irradiation" technique was used for studying new chemical bonds formation in N-doped diamond samples under high-energy heavy ion irradiations...In the present work, "low energy ion implantation+swift heavy ion irradiation" technique was used for studying new chemical bonds formation in N-doped diamond samples under high-energy heavy ion irradiations. The N-dopants were from 100 keV N-ion implantations at room temperature (RT) to doses 5×l017。展开更多
文摘In 2002, 200 kV heavy ion accelerator was operated for 1 300 h for the study on ion implantation modification. The improvement and maintenance of the accelerator were made. 4 species of ion beams(C+, N+, P+ and Fe+) were provided.The main experiments are .is follows.1. Synthesis of C-N compounds by high-energy heavy ion irradiation.Diamond-like carbon thin film and graphite carbon samples were implanted with N+ ion beams at room temperature. The energy of implanted ion is 120 keV and 100 keV. The dosage range is from 5×1017 to
文摘Y1.6Ca1.4V 0.45Sn0.5Fe4.05O12 is irradiated by 0.56 GeV carbon ion. The irradiation effect is investigated by Mossbauer spectroscopy. The irradiation results in an isotropic distribution of the hyperfine magnetic field. The hyperfine magnetic fields decrease after the irradiation due to the change of supertransferred field. After the irradiation, the chain Fe(a)-oxygen-Fe(d) become longer and it leads to decrease of the supertransferred field.
基金Supported by NSFC and the Chinese Academy of Sciences.
文摘We have proposed a novel technique, 'low energy ion implantation + swift heavy ion irradiation', for synthesizing new structures in atom mixed materials. Recently, we used this technique to synthesize carbon-nitrides such as a and β-C3N4. As we know, the ratio of nitrogen (N-) to carbon (C-) atoms is one of the key parameters for synthesizing the phase a or β-C3N4. The ideal ratio of N- to C-atoms, N/C, is 4/3. However, this value could not be easily achieved on account of the solubility, diffusion and release of the nitrogen atoms
基金Supported by NSFC and the Chinese Academy of Sciences.
文摘We have proposed a novel technique, 'low energy ion implantation+swift heavy ion irradiation', for synthesizing new structures in atom mixed materials. The schematic procedure of this technique is shown in Fig.1. In detail, the original samples were prepared at first (1), and then they were implanted at room temperature (RT) with keV ions (2) after that irradiated at RT with high-energy heavy ions (3). After high-energy
基金Supported by NSFC and the Chinese Academy of Sciences.
文摘In the present work, "low energy ion implantation+swift heavy ion irradiation" technique was used for studying new chemical bonds formation in N-doped diamond samples under high-energy heavy ion irradiations. The N-dopants were from 100 keV N-ion implantations at room temperature (RT) to doses 5×l017。
