krypton dimer | 12596-40-6

• 分子结构分类: 无机化合物
• 英文名称: krypton dimer
• CAS: 12596-40-6
• 化学式: Kr₂
• 分子量: 167.6
• InChiKey: HMVOOBFEYNUSHK-UHFFFAOYSA-N

反应信息

• 作为产物：
  描述：

  氪气 在 氩 作用下， 以 gas 为溶剂， 生成 krypton dimer
  参考文献：
  名称：

  通过激光诱导分子排列研究稀有气体范德华二聚体的极化率各向异性

  摘要：

  利用强非共振激光场和诱导偶极矩之间的相互作用的分子排列技术应用于同核稀有气体二聚体 Rg2（Rg=Ar、Kr 和 Xe）。通过库仑爆炸 Rg2 和通过测量碎片离子的角分布来研究对齐程度。在相同的激光场峰值强度下，取向度≪cos2θ≫按Ar2、Kr2和Xe2的顺序变大，反映了它们的极化率各向异性Δα的数量级。以 I2 分子为参考，Ar2、Kr2 和 Xe2 的 Δα 估计分别为 0.5、0.7 和 1.3 A3。

  DOI：

  10.1063/1.1608851

文献信息

• The production kinetics for rare gas alkali ions
  作者：M. Schumann、H. Langhoff

  DOI：10.1063/1.457544

  日期：1989.11

  In a recent paper it was shown that rare gas ions form bound molecular states which decay by emission of radiation in the VUV. They are potential candidates as storage media for VUV lasers. In the present investigation the ions Kr+K, Kr+Cs, Xe+K, and Xe+Cs are produced by electron beam excitation of suitable gas mixtures with He as buffer gas. Studies of the reaction kinetics were performed for Kr+K. The rate constant for the reaction Kr++K+He was determined to be 2.8×10−30 cm3 s−1. Kr+K is strongly quenched by plasma electrons and by reaction with Kr. The fluorescence yield at intense excitation was determined to be about 5×10−2 VUV quanta per He+ ion.
• Size-effects on energy relaxation and excited-species desorption in krypton clusters: Fluorescence lifetime measurements with 10 eV laser excitation
  作者：A. V. Kanaev、L. Museur、M. C. Castex

  DOI：10.1063/1.474756

  日期：1997.9.8

  Fluorescence lifetime measurements of KrN clusters (N̄=2–2000) have been carried out using intense 10 eV laser excitation near 3P2 metastable atomic energy level. Two principal groups of electronically excited dimers Kr2* have been found in desorption: dimers, loosely bound near the (3P2+1S0) dissociation limit, ejected from cooled clusters and dimers undergoing vibrational relaxation from hot clusters. The desorption is principally terminated when N̄⩾50 at./cluster. The relaxation kinetics seems to converge to the properties of a solid state for 102⩽N̄⩽103 at./cluster. A variation of the Kr2*(1u/0u−) radiative lifetime, from 264 ns (in gas phase) to 440 ns (N̄=102), has been found. An equilibrium cluster temperature of 57 K has been calculated from this τ(N) dependence.
• Two photon spectra of electronic states of Kr₂and ArKr near the Kr* 4<i>p</i>⁵5<i>p</i>states
  作者：P. M. Dehmer、S. T. Pratt

  DOI：10.1063/1.454727

  日期：1988.4

  The two photon resonant, three photon ionization spectra of Kr2 and ArKr were determined in the energy region of the Kr* 5p[3/2]1, 5p[3/2]2, and 5p[1/2]0 states. The spectrum of Kr2 displays three new band systems that arise from two photon transitions from the ground state to excited states of gerade symmetry. The analysis of the observed vibronic structure of these band systems provides new information on the dissociation energies and the potential energy curves of the low-lying dipole forbidden excited gerade states of Kr2. A photoelectron spectrum determined following (2+1) excitation via an intense peak of the band system dissociating to Kr 1S0+Kr* 5p[1/2]0 provides the first observation of the weakly bound C 2Π3/2u state and the repulsive B 2Π1/2g and D 2Σ+1/2g states of Kr2. The (2+1) ionization spectra for both ArKr and KrXe were examined in the same energy region. For ArKr, a band system analogous to that observed in Kr2 was observed near the Kr* 5p[1/2]0 state, and an additional band system was observed near the Ar* 4s[3/2]01 state. No structure was observed for KrXe.