## 抄録

Within the framework of the complex basis function method, the photoionization cross sections of H_{2}^{+} and H_{2} were calculated based on the variational principle for the frequency-dependent polarizabilities. In these calculations, complex orbital exponents of Gaussian-type basis functions for the final state continuum wavefunctions were fully optimized for each photon energy with the numerical Newton-Raphson method. In most cases, the use of only one or two complex Gaussian-type basis functions was enough to obtain excellent agreement with previous high precision calculations and available experimental results. However, there were a few cases, in which the use of complex basis functions having various angular momentum quantum numbers was crucial to obtain the accurate results. The behavior of the complex orbital exponents as a function of photon energy was discussed in relation to the scaling relation and the effective charge for photoelectron. The success of this method implies the effectiveness of the optimization of orbital exponents to reduce the number of basis functions and shows the possibility to calculate photoionization cross sections of general molecules using only Gaussian-type basis functions.

本文言語 | English |
---|---|

ページ（範囲） | 2471-2478 |

ページ数 | 8 |

ジャーナル | Journal of Computational Chemistry |

巻 | 29 |

号 | 14 |

DOI | |

出版ステータス | Published - 2008 11月 15 |

外部発表 | はい |

## ASJC Scopus subject areas

- 化学 (全般)
- 計算数学

## フィンガープリント

「Photoionization cross sections of H_{2}

^{+}and H

_{2}with complex Gaussian-type basis functions optimized for the frequency-dependent polarizabilities」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。