The tunneling ionization rates of vibrationally excited N2 molecules at the ground electronic state are calculated using molecular orbital Ammosov–Delone–Krainov theory considering R-dependence. The results show tha...The tunneling ionization rates of vibrationally excited N2 molecules at the ground electronic state are calculated using molecular orbital Ammosov–Delone–Krainov theory considering R-dependence. The results show that molecular alignment significantly affects the ionization rate, as the rate is mainly determined by the electron density distribution of the highest occupied molecular orbital. The present work indicates that the ratios of alignment-dependent rates of different vibrational levels to that of the vibrational ground level increase for the aligned N2 at the angle θ = 0？, and suggests that the alignment-dependent tunneling ionization rates can be used as a diagnostics for the influence of vibrational excitation on the strong field ionization of molecules.展开更多
The dependence of the macroscopic magnetism for NdCoFeB permanent magnet on the degree of grain alignment has been studied. With an increase in grain alignment degree, the coercivity of the permanent magnet decreases ...The dependence of the macroscopic magnetism for NdCoFeB permanent magnet on the degree of grain alignment has been studied. With an increase in grain alignment degree, the coercivity of the permanent magnet decreases and the remanence increases. The decrease rate of the coercivity is smaller than the increase rate of the remanence. The coercivity H c(θ) increases with increasing angle θ between the applied field and the texture axis, and for the permanent magnets with good grain alignment the increase rate of H c(θ) is large. These experimental results can be interpreted by using the starting field theory of coercivity.展开更多
X and Y这一形式的英语习语具有简单固定的句法形式,丰富的语义网络,读来朗朗上口等特点,其语义的形成具有一定的理据性。文章在认知语言学及构式语法的理论框架下,将"X and Y结构视为一种独立的构式,以自主/依存联结理论和概念整...X and Y这一形式的英语习语具有简单固定的句法形式,丰富的语义网络,读来朗朗上口等特点,其语义的形成具有一定的理据性。文章在认知语言学及构式语法的理论框架下,将"X and Y结构视为一种独立的构式,以自主/依存联结理论和概念整合理论为理论基础,加以修补和整合形成新的AB模型,来阐释此多义构式的生成理据。研究表明:"X and Y表达式是以简单并列义为原型义的一种独立构式;修补后的双自主以及双依存模型在"X and Y构式的概念整合过程中对其类属空间的形成机制具很强大的解释力,合成空间的运作机制能够有效揭示构式完型义的形成。展开更多
基金Project supported by the National Basic Research Program of China(Grant No.2013CB922200)the National Natural Science Foundation of China(Grant Nos.11034003 and 11127403)
文摘The tunneling ionization rates of vibrationally excited N2 molecules at the ground electronic state are calculated using molecular orbital Ammosov–Delone–Krainov theory considering R-dependence. The results show that molecular alignment significantly affects the ionization rate, as the rate is mainly determined by the electron density distribution of the highest occupied molecular orbital. The present work indicates that the ratios of alignment-dependent rates of different vibrational levels to that of the vibrational ground level increase for the aligned N2 at the angle θ = 0？, and suggests that the alignment-dependent tunneling ionization rates can be used as a diagnostics for the influence of vibrational excitation on the strong field ionization of molecules.
文摘The dependence of the macroscopic magnetism for NdCoFeB permanent magnet on the degree of grain alignment has been studied. With an increase in grain alignment degree, the coercivity of the permanent magnet decreases and the remanence increases. The decrease rate of the coercivity is smaller than the increase rate of the remanence. The coercivity H c(θ) increases with increasing angle θ between the applied field and the texture axis, and for the permanent magnets with good grain alignment the increase rate of H c(θ) is large. These experimental results can be interpreted by using the starting field theory of coercivity.
文摘X and Y这一形式的英语习语具有简单固定的句法形式,丰富的语义网络,读来朗朗上口等特点,其语义的形成具有一定的理据性。文章在认知语言学及构式语法的理论框架下,将"X and Y结构视为一种独立的构式,以自主/依存联结理论和概念整合理论为理论基础,加以修补和整合形成新的AB模型,来阐释此多义构式的生成理据。研究表明:"X and Y表达式是以简单并列义为原型义的一种独立构式;修补后的双自主以及双依存模型在"X and Y构式的概念整合过程中对其类属空间的形成机制具很强大的解释力,合成空间的运作机制能够有效揭示构式完型义的形成。
