Department of Physics, University of Fribourg, Chemin du Musée 3, 1700 Fribourg, Switzerland.
J Chem Phys. 2010 Oct 21;133(15):154508. doi: 10.1063/1.3497643.
Copper atoms and molecules are laser ablated into bulk liquid and solid helium, and the emission spectra of the laser excited D→X, B→X, and a→X transitions of Cu(2) are observed to exhibit clearly resolved vibrational bands. Surprisingly, for the D→X and the B→X transitions, no differences were observed for superfluid He at 1.5 K, for the normal liquid at 2.65 K, or for the 1.5 K solid at higher pressures of about 30 bars. An interpretation based on the bubble model indicates that the interaction with the He matrix is much weaker than in the case of the alkali atoms. Compared to other solid rare gas matrices, the line shifts and line widths in condensed helium are much smaller by nearly an order of magnitude.
铜原子和分子被激光烧蚀到体相液体和固体氦中，观察到激光激发的 Cu(2) 的 D→X、B→X 和 a→X 跃迁的发射光谱呈现出清晰分辨的振动带。令人惊讶的是，对于 D→X 和 B→X 跃迁，在 1.5 K 的超流氦、2.65 K 的正常液体或更高压力（约 30 巴）的 1.5 K 固体中，都没有观察到差异。基于气泡模型的解释表明，与碱金属原子相比，与氦基质的相互作用要弱得多。与其他固体稀有气体基质相比，凝聚氦中的谱线位移和线宽小了近一个数量级。
