The method of Zeng et al. (1991) employed diameter growth to estimate the transition probability of the matrix model in uneven-aged forest stands. In this paper the Weibull distribution for even-aged forest stands ins...The method of Zeng et al. (1991) employed diameter growth to estimate the transition probability of the matrix model in uneven-aged forest stands. In this paper the Weibull distribution for even-aged forest stands instead of uniform distribution chosen by Zeng is used. By comparing the results of the improved method with those of the original method of Zeng, it turns out that the improved method of Zeng given in this paper is more efficient.展开更多
Using the full relativistic quantum mechanics (GRASP2), we have calculated systematically the 3P 2- 3P 1 and 3P 1- 3P 0 magnetic dipole M1 energy level separations, transition probabilities and oscillator strengths in...Using the full relativistic quantum mechanics (GRASP2), we have calculated systematically the 3P 2- 3P 1 and 3P 1- 3P 0 magnetic dipole M1 energy level separations, transition probabilities and oscillator strengths in the 3s3p configuration of the magnesium sequences. The two configurations 3s3p and 3p3d are used. Breit and QED effects are treated as high-order perturbations. Excellent comparison is obtained throughout the range of atomic number Z, and the inclusion of the 3p3d configuration gives results which are in good agreements with recent experimental and reference data.展开更多
基金This paper was supported by the National Natural Science Foundation of China
文摘The method of Zeng et al. (1991) employed diameter growth to estimate the transition probability of the matrix model in uneven-aged forest stands. In this paper the Weibull distribution for even-aged forest stands instead of uniform distribution chosen by Zeng is used. By comparing the results of the improved method with those of the original method of Zeng, it turns out that the improved method of Zeng given in this paper is more efficient.
文摘Using the full relativistic quantum mechanics (GRASP2), we have calculated systematically the 3P 2- 3P 1 and 3P 1- 3P 0 magnetic dipole M1 energy level separations, transition probabilities and oscillator strengths in the 3s3p configuration of the magnesium sequences. The two configurations 3s3p and 3p3d are used. Breit and QED effects are treated as high-order perturbations. Excellent comparison is obtained throughout the range of atomic number Z, and the inclusion of the 3p3d configuration gives results which are in good agreements with recent experimental and reference data.
