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类氦原子体系基态能量的变分法数值研究 总被引:4,自引:1,他引:3
选取由指数形式函数的线性组合所构成的试探波函数,利用变分法对类氦原子体系的基态能量进行了数值计算,计算中利用拟牛顿法求非线性方程组的一组实根,计算结果与实验值相当接近.计算表明:当n由1增大到2时,能量的计算值有较大的改进,但由于选取的变分波函数没有考虑到电子关联作用,所以计算只能达到一定的精确度. 相似文献
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在RIKEN-RIPS上测量了23Al等丰质子核素的核反应总截面(σR)和平行动量分布(P//). 观察到了23Al核反应总截面的增强, 与以前的实验结果相符. 同时得到了23Al等丰质子核素擦掉一个质子后的P//. 在Few-body Glauber模型下对实验结果进行了讨论. P//的宽度显示23Al基态的外层质子处于d态, 这与g因子测量实验结果一致. 为了同时解释P//和σR的实验测量结果, 我们认为23Al可能有核芯增大的现象. 相似文献
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Differential cross sections of elastic electron scattering from CH4. CF4 and SF6 in the energy range l00-700eV 下载免费PDF全文
We investigate the differential cross sections (DCS) of elastic electron scattering from CH4, CF4 and SF6 at six impact energies in a range of 100 700eV by employing the independent atom model (IAM) together with the relativistic partial waves. The atom is present in an optical potential which is complex, spherically symmetric, and energy dependent. The optical potential of the atom is the sum of the direct static, dynamic polarization, local exchange and modified absorption potentials. The results obtained by using a modified absorption potential show significant improvements on the unmodified absorption potential results. The present results are generally in good agreement with experimental data available. In addition, the present results indicate that the structure of molecule manifests the observable effects on electron- molecule scattering.[第一段] 相似文献
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Some experimental techniques and theoretical analysis on unbound nuclei structure study are briefly introduced in this article. The unbound nuclei structure investigation can inspect the reliability of theoretical calculation, and is also important to extend the modern nuclear structure model to exotic nuclear regions. With the recent development of radioactive Ion Beam (RIB) facility and some new experimental methods, the structure of unbound nuclei near drip line can be studied in experiment. 相似文献
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采用满足连续性条件的多项式独立基函数,应用线性变分法通过求解广义本征值方程研究了一维无限深势阱中粒子的能级和波函数.计算表明,随着试验基函数个数的增大,线性变分法的结果趋近于精确的解析结果. 相似文献
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