For experiments such as on Ni-like Ag x-ray laser, driven by 1ω laser, the gain region is only several nm depth near the target surface, this paper proposes a new two-layer target, in which a thin layer （several nm ...For experiments such as on Ni-like Ag x-ray laser, driven by 1ω laser, the gain region is only several nm depth near the target surface, this paper proposes a new two-layer target, in which a thin layer （several nm depth） of silver is plated on the surface of some other materials. Furthermore, the Ni-like Ag 13.9 nm x-ray laser produced by three new kinds of two-layer target with CH, Al and Ge as foundation, was theoretically studied.展开更多
We calculate the electron impact excitation of Ni-like gold by using the Dirac R-matrix theory, and the cor- responding collision strengths and effective collision strengths are obtained. In the calculations of the le...We calculate the electron impact excitation of Ni-like gold by using the Dirac R-matrix theory, and the cor- responding collision strengths and effective collision strengths are obtained. In the calculations of the level energy, （1sZ2sZ2p6）3sZ3p63d10, 3s23p63d94/, 3s23p53d104/, and 3s3p63d104/（l = 0, 1,2,3） configurations are included and 107 fine-structure levels are generated. In the calculations of the collision strengths, only the first 59 levels are included. Com- parisons are made with the distorted wave （DW） results of Zeng et al. for both collision strengths and effective collision strengths. For the collision strengths, the two sets of calculations are in excellent agreement for most of the transitions. However, because of the inclusion of the resonances, our effective collision strengths are generally several times larger than those of Zeng et al.. The accuracy of our calculations is assessed.展开更多
Atomic structure data and effective collision strengths from literature for 1s2 2s2 2p6 3s2 3p63d10 and 34 fine-structure levels contained in the configurations 1s2 2s2 2p6 3s2 3p63d9 4l (l = s, p, d) for the nickel-l...Atomic structure data and effective collision strengths from literature for 1s2 2s2 2p6 3s2 3p63d10 and 34 fine-structure levels contained in the configurations 1s2 2s2 2p6 3s2 3p63d9 4l (l = s, p, d) for the nickel-like Au ion are used in the determination of the reduced population for these levels over a wide range of electron densities and at various electron plasma temperatures. The gain coefficient for those transitions with positive population inversion factor are determined and plotted against the electron density.展开更多
A series of Co-Ni-Fe hydrotalcite like compounds have been synthesized by combining a mixed solution of Co(NO3)2·6H2O,Ni(NO3)2·6(H2O) and Fe(NO3)3·9H2O with a second solution containing NaOH and Na2CO3....A series of Co-Ni-Fe hydrotalcite like compounds have been synthesized by combining a mixed solution of Co(NO3)2·6H2O,Ni(NO3)2·6(H2O) and Fe(NO3)3·9H2O with a second solution containing NaOH and Na2CO3.The compounds have been characterized by XRD,IR and TG-DTA.The results showed that the hydrotalcites with M2+/M3+ molar ratios of 2 to 4 have the nice crystal form and high purity.After calcined,hydrotalcites are converted into composite oxides.It is found that the composite oxides has activity and selectivity for catalyzing the dehydrogenation and dehydration of ethanol.展开更多
以L-精氨酸(L-Arginine)为结构导向剂,利用水热法合成由纳米片组装成的分等级β-Ni(OH)_2花状微球。采用XRD、SEM、TEM及N_2吸附脱附对样品的微观结构、表面特性及比表面积进行了表征,深入分析其合成机理,并通过循环伏安、充放电、交流...以L-精氨酸(L-Arginine)为结构导向剂,利用水热法合成由纳米片组装成的分等级β-Ni(OH)_2花状微球。采用XRD、SEM、TEM及N_2吸附脱附对样品的微观结构、表面特性及比表面积进行了表征,深入分析其合成机理,并通过循环伏安、充放电、交流阻抗等测试考察了该电极材料的电化学性能。结果表明,分等级β-Ni(OH)_2花状微球具有优异的电化学电容特性,在电流密度为5 m A/cm^2时,β-Ni(OH)_2的比电容值高达1 048.5 F/g,500圈充放电循环后,其比电容仅衰减了9.2%,可见所制得样品是一种理想的超级电容器电极材料。展开更多
文摘For experiments such as on Ni-like Ag x-ray laser, driven by 1ω laser, the gain region is only several nm depth near the target surface, this paper proposes a new two-layer target, in which a thin layer （several nm depth） of silver is plated on the surface of some other materials. Furthermore, the Ni-like Ag 13.9 nm x-ray laser produced by three new kinds of two-layer target with CH, Al and Ge as foundation, was theoretically studied.
基金supported by the National Natural Science Foundation of China(Grant Nos.11174213 and 11304266)
文摘We calculate the electron impact excitation of Ni-like gold by using the Dirac R-matrix theory, and the cor- responding collision strengths and effective collision strengths are obtained. In the calculations of the level energy, （1sZ2sZ2p6）3sZ3p63d10, 3s23p63d94/, 3s23p53d104/, and 3s3p63d104/（l = 0, 1,2,3） configurations are included and 107 fine-structure levels are generated. In the calculations of the collision strengths, only the first 59 levels are included. Com- parisons are made with the distorted wave （DW） results of Zeng et al. for both collision strengths and effective collision strengths. For the collision strengths, the two sets of calculations are in excellent agreement for most of the transitions. However, because of the inclusion of the resonances, our effective collision strengths are generally several times larger than those of Zeng et al.. The accuracy of our calculations is assessed.
文摘Atomic structure data and effective collision strengths from literature for 1s2 2s2 2p6 3s2 3p63d10 and 34 fine-structure levels contained in the configurations 1s2 2s2 2p6 3s2 3p63d9 4l (l = s, p, d) for the nickel-like Au ion are used in the determination of the reduced population for these levels over a wide range of electron densities and at various electron plasma temperatures. The gain coefficient for those transitions with positive population inversion factor are determined and plotted against the electron density.
文摘A series of Co-Ni-Fe hydrotalcite like compounds have been synthesized by combining a mixed solution of Co(NO3)2·6H2O,Ni(NO3)2·6(H2O) and Fe(NO3)3·9H2O with a second solution containing NaOH and Na2CO3.The compounds have been characterized by XRD,IR and TG-DTA.The results showed that the hydrotalcites with M2+/M3+ molar ratios of 2 to 4 have the nice crystal form and high purity.After calcined,hydrotalcites are converted into composite oxides.It is found that the composite oxides has activity and selectivity for catalyzing the dehydrogenation and dehydration of ethanol.
文摘以L-精氨酸(L-Arginine)为结构导向剂,利用水热法合成由纳米片组装成的分等级β-Ni(OH)_2花状微球。采用XRD、SEM、TEM及N_2吸附脱附对样品的微观结构、表面特性及比表面积进行了表征,深入分析其合成机理,并通过循环伏安、充放电、交流阻抗等测试考察了该电极材料的电化学性能。结果表明,分等级β-Ni(OH)_2花状微球具有优异的电化学电容特性,在电流密度为5 m A/cm^2时,β-Ni(OH)_2的比电容值高达1 048.5 F/g,500圈充放电循环后,其比电容仅衰减了9.2%,可见所制得样品是一种理想的超级电容器电极材料。
