Using a modified R-matrix code, the fine-structure-resolved partial photoionization cross sections of excited Na （Z = 11） are calculated within the Breit-Pauli approximation. Our calculated energy levels of Na＋ and...Using a modified R-matrix code, the fine-structure-resolved partial photoionization cross sections of excited Na （Z = 11） are calculated within the Breit-Pauli approximation. Our calculated energy levels of Na＋ and Na are in good agreement with the experimental values within 1% and the branching ratios of the J-resolved partial cross sections are consistent with the recent measurements within the experimental uncertainties. The agreements are impossible to be obtained without adequately taking into account the relativistic effects and the electron correlations together. Therefore, even for the intermediate-Z elements （e.g. Na with Z = 11）, the relativistic effects （mainly the spin-orbit interactions） should not be neglected.展开更多
The photoionization cross sections of the levels belonging to the ground configuration [Ne]3s^2 3p^6 3d of Ge^13＋ are investigated using the fully relativistic R-matrix method in the 2p - 3d excitation region. The ph...The photoionization cross sections of the levels belonging to the ground configuration [Ne]3s^2 3p^6 3d of Ge^13＋ are investigated using the fully relativistic R-matrix method in the 2p - 3d excitation region. The photoionization cross section is dominated by 2p - 3d resonances. The detailed resonance structures are described and analysed with the resonance positions, widths and oscillator strengths to be determined. Good agreement is obtained between the length and velocity forms of the resonance oscillator strengths. The relative difference is less than 8%.展开更多
对七道次异步叠轧铜板采用220℃×30 m in和220℃×40 m in两种工艺进行退火,运用背散射电子衍射技术对两种铜板的再结晶程度、织构和晶界特征分布进行了研究。结果表明,经220℃×40 m in退火处理后,铜板的再结晶较完全,其...对七道次异步叠轧铜板采用220℃×30 m in和220℃×40 m in两种工艺进行退火,运用背散射电子衍射技术对两种铜板的再结晶程度、织构和晶界特征分布进行了研究。结果表明,经220℃×40 m in退火处理后,铜板的再结晶较完全,其织构为明显的{100}〈001〉立方织构;而经220℃×30 m in退火处理后,铜板内仍存在晶体缺陷,其织构为{123}〈412〉轧制织构及少量的{100}〈001〉立方织构。晶界特征分布图表明晶界都主要分布在Σ1、Σ3、Σ7、Σ9和Σ11位置上,采用220℃×40 m in退火处理后铜板中各主要晶界的含量明显高于采用220℃×30m in退火后的。展开更多
In this paper, the texture and microstructure evolution of drawn-torsion and drawn-annealing-torsion ferrite wires are studied by electron back scattering diffraction （EBSD） in order to investigate the special torsi...In this paper, the texture and microstructure evolution of drawn-torsion and drawn-annealing-torsion ferrite wires are studied by electron back scattering diffraction （EBSD） in order to investigate the special torsion texture evolution. Compared to the simulation results, the stable texture components {110}〈 110 〉 and {110}〈112〉 in both drawn-torsion and drawn-annealing-torsion wires display different evolution processes. The texture of the drawn-annealing-torsion wire fits to the Taylor model. A special texture evolution is found in drawn-torsion wires, related to the grain shape, and the heterogeneous deformation. A new plastic deformation viewpoint is suggested based on the special microstructure of drawn ferrite wire.展开更多
基金Supported by This work is supported by the Ministry of Science and Technology and Ministry of Education of China, the Key Project of the Ministry of Education of China （N0 306020）, the National Natural Science Foundation of China, the National High- Tech ICF Committee in China and the Yin-He Super-computer Center, Institute of Applied Physics and Mathematics, Beijing, China, and the National Basic Research Programme of China under Grant No 2006CB921408.
文摘Using a modified R-matrix code, the fine-structure-resolved partial photoionization cross sections of excited Na （Z = 11） are calculated within the Breit-Pauli approximation. Our calculated energy levels of Na＋ and Na are in good agreement with the experimental values within 1% and the branching ratios of the J-resolved partial cross sections are consistent with the recent measurements within the experimental uncertainties. The agreements are impossible to be obtained without adequately taking into account the relativistic effects and the electron correlations together. Therefore, even for the intermediate-Z elements （e.g. Na with Z = 11）, the relativistic effects （mainly the spin-orbit interactions） should not be neglected.
基金Supported by the National Natural Science Foundation of China under Grant Nos 10433010, 10373014 and 10403007, and Beljing Key Laboratory for Nano-Photonics and Nano-Structures.
文摘The photoionization cross sections of the levels belonging to the ground configuration [Ne]3s^2 3p^6 3d of Ge^13＋ are investigated using the fully relativistic R-matrix method in the 2p - 3d excitation region. The photoionization cross section is dominated by 2p - 3d resonances. The detailed resonance structures are described and analysed with the resonance positions, widths and oscillator strengths to be determined. Good agreement is obtained between the length and velocity forms of the resonance oscillator strengths. The relative difference is less than 8%.
文摘对七道次异步叠轧铜板采用220℃×30 m in和220℃×40 m in两种工艺进行退火,运用背散射电子衍射技术对两种铜板的再结晶程度、织构和晶界特征分布进行了研究。结果表明,经220℃×40 m in退火处理后,铜板的再结晶较完全,其织构为明显的{100}〈001〉立方织构;而经220℃×30 m in退火处理后,铜板内仍存在晶体缺陷,其织构为{123}〈412〉轧制织构及少量的{100}〈001〉立方织构。晶界特征分布图表明晶界都主要分布在Σ1、Σ3、Σ7、Σ9和Σ11位置上,采用220℃×40 m in退火处理后铜板中各主要晶界的含量明显高于采用220℃×30m in退火后的。
基金supported by Key Projects of the National Science&Technology Pillar Program(No.2011BAE13B03)the Fundamental Research Funds for the Central Universities(No.N110502001)
文摘In this paper, the texture and microstructure evolution of drawn-torsion and drawn-annealing-torsion ferrite wires are studied by electron back scattering diffraction （EBSD） in order to investigate the special torsion texture evolution. Compared to the simulation results, the stable texture components {110}〈 110 〉 and {110}〈112〉 in both drawn-torsion and drawn-annealing-torsion wires display different evolution processes. The texture of the drawn-annealing-torsion wire fits to the Taylor model. A special texture evolution is found in drawn-torsion wires, related to the grain shape, and the heterogeneous deformation. A new plastic deformation viewpoint is suggested based on the special microstructure of drawn ferrite wire.
