記錄編號 | 6425 |
狀態 | NC094FJU00198005 |
助教查核 | |
索書號 | |
學校名稱 | 輔仁大學 |
系所名稱 | 物理學系 |
舊系所名稱 | |
學號 | 491326198 |
研究生(中) | 賴慧芳 |
研究生(英) | Lai Hui Fang |
論文名稱(中) | 以B-spline為基底的複數座標旋轉方法來研究鈹原子的光游離 |
論文名稱(英) | B-spline-based Complex-Rotation Method for the Photoionization of Be |
其他題名 | |
指導教授(中) | 方德貴 |
指導教授(英) | |
校內全文開放日期 | |
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電子全文送交國圖. | |
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學位類別 | 碩士 |
畢業學年度 | 94 |
出版年 | |
語文別 | 中文 |
關鍵字(中) | 光游離
諧振態
Fano q 參數 |
關鍵字(英) | photoionization
resonance
Fano q parameter |
摘要(中) | 我們用以B-spline為基底的複數座標旋轉方法來計算鈹原子在Be+2s與Be+3s臨界值之間的基態光游離截面。我們所得到的諧振態參數,如諧振態的能量、寬度和Fano q 參數是直接計算出來的。我們
的結果與其他理論值有很好的一致性。
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摘要(英) | We have used a B-spline-based complex-rotation method to calculate the ground-state photoionization cross sections of Be between the Be+2s and Be+3s thresholds. The resonance parameters, such as resonance energies and widths, and the Fano q parameters, are calculated directly. Our results agree well with other theoretical data. |
論文目次 | 第一章 緒論
1.1 介紹……………………………………… 1
1.2 B-spline ………………………………… 2
1.3 Fano q parameter ……………………… 4
第二章 理論 ……………………………… 5
第三章 計算結果與討論
3.1 Be原子模型、基態能量 ……………… 9
3.2 最佳β值的選擇………………………… 11
3.3 Be原子 single-channel 諧振態 ……… 14
3.4 Be原子 multi-channel 諧振態 ………… 19
第四章 結論 ……………………………… 24
參考文獻 …………………………………… 25
附錄 ………………………………………… 27
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參考文獻 | [1] T. N. Rescigno, “Atomic photoionization by the complex-basis-function expansion method: Application to ground-state and metastable Mg, ” Phys. Rev. A 31, 607 (1985).
[2] H. S. Fung, H. H. Wu, T. S. Yih, T. K. Fang, and T. N. Chang, “Photoabsorption of Mg above the 3p threshold, ” Phys. Rev. A 64, 052716 (2001).
[3] T. N. Chang,“Photoionization Dominated by Double-excitation in Two-electron and Divalent Atoms, ” in Many-body Atomic Physics, Cambridge Univ. Press, pp. 129-154 (1994).
[4] C. deBoor, “A Practical Guide to Splines,” Springer, New York (1978).
[5] W. R. Johnson, S. A. Blundell, and J. Sapirstein, “Finite basis sets for the Dirac equation constructed from B splines, ” Phys. Rev. A 37, 307 (1988).
[6] U. Fano, “Effects of Configuration Interaction on Intensities and Phase Shifts,” Phys. Rev. 124, 1866 (1961).
[7] T. K. Fang and T. N. Chang, “B-spline-based multichannel K-matrix method for atomic photoionization, ” Phys. Rev. A 61, 062704 (2000).
[8] T. K. Fang, Y. K. Ho, and Y. C. Lin, “Proceedings of International Seminar on Photoionization in Atom,” Kyoto University Press, p. 12 (2002).
[9] T. N. Chang, in Many-body Theory of Atomic Structure and Photoionization, edited by T. N. Chang (World Scientific, Singapore, 1993), p. 213.
[10] T. N. Rescigno, C. W. McCurdy, Jr., and A. E. Orel, “Extensions of the complex-coordinate method to the study of resonances in many-electron systems,” Phys. Rev. A 17, 1931 (1978).
[11] T. N. Rescigno and C. W. McCurdy, “Locally complex distortions of the energy spectrum in the calculation of scattering amplitudes and photoionization cross sections,” Phys. Rev. A 31, 624 (1985).
[12] 林彥璋,“以B-Spline為主的複數座標旋轉方法來研究二價原子系統與並行計算,”天主教輔仁大學物理研究所碩士論文, 2-4 (2004).
[13] Y. K. Ho and T. K. Fang, “Photoionization Profiles of Helium Autoionizing States in External DC Electric Fields,” Journal of the Chinese Chemical Society. 48, 539-544 (2001).
[14] Bin Zhou and C. D. Lin, “Photoionization of the beryllium atom,” Phys. Rev. A 51, 1286-1290 (1995).
[15] T. N. Chang and Lizhi Zhu, “Photoionization of the Be isoelectronic sequence from the ground and the 1S bound excited states,” Phys. Rev. A 51, 374-380 (1995).
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論文頁數 | 42 |
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異動記錄 | M admin Y2008.M7.D3 23:18 61.59.161.35 |