报道了用激光蒸发/分子束方法产生深度冷却的中性金属团簇。产生的铝团簇Aln(n=2,…,6,7)用193 nm的准分子激光电离,由飞行时间质谱(TOF MS)探测。对激光蒸发/分子束技术产生的团簇束的特点作了简单评述并与其它团簇源作了比较。

The first result in China of the generation of ultracold neutral metal clusters by laser vaporization/molecular beam techniques in the preliminary stage of our experiments is reported. The generated Aln clusters (n=2,…,6,7) are photoionized by excimer laser at 193 urn and detected with a TOF mass spectrometer. Meanwhile, remarks on cluster beam source of this kind and comparison of it with other different sources are briefly presented.