### 抜粋

Photodissociation of (C_{6}H_{6})_{2}
^{+} is studied with photon energies between 1.29 and 2.81 eV. Massselected ion beam of (C_{6}H_{6})_{2}
^{+} is photodissociated by a pulsed laser beam in the field-free region of a reflectron-type time-of-flight mass spectrometer. The average relative translational energy, 〈ε_{t}〉, and the angular distributions of the photofragments (C_{6}H_{6}
^{+} and C_{6}H _{6}) are measured as a function of photon energy. With a photon energy of 2.81 eV, the (C_{6}H_{6})_{2}
^{+} ions are promoted to a bound upper state correlated to C_{6}H_{6}
^{+}(ππ) + C_{6}H_{6}(X). Only a small fraction (≈3%) of the available energy is partitioned into the translational energy of the fragments and the product angular distribution is isotropic. Absorption of a photon in the range of 1.29-2.14 eV induces a charge resonance transition to a repulsive upper state which correlates to C_{6}H_{6}
^{+}(X) + C_{6}H_{6}(X). The observed values for 〈ε_{t}〉 are at most 10% of the available energy, although the statistical phase space calculation shows that the complete randomization of the available energy is not achieved. As the photoexcited (C _{6}H_{6})_{2}
^{+} moves apart on the dissociative potential surface, ≈90% of the available energy flows into the intramolecular modes of the fragments. The energy partitioning becomes almost statistical regardless of the photoexcitation to a dissociative state.

元の言語 | 英語 |
---|---|

ページ（範囲） | 390-398 |

ページ数 | 9 |

ジャーナル | The Journal of Chemical Physics |

巻 | 98 |

発行部数 | 1 |

DOI | |

出版物ステータス | 出版済み - 1 1 1993 |

### All Science Journal Classification (ASJC) codes

- Physics and Astronomy(all)
- Physical and Theoretical Chemistry

## フィンガープリント Photodissociation dynamics of (C<sub>6</sub>H<sub>6</sub>)<sub>2</sub> <sup>+</sup>' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

## これを引用

_{6}H

_{6})

_{2}

^{+}

*The Journal of Chemical Physics*,

*98*(1), 390-398. https://doi.org/10.1063/1.464632