Stwalley WC, Wang H
Department of Physics, University of Connecticut, 2152 Hillside Road, Storrs, Connecticut, 06269-3046
J Mol Spectrosc. 1999 Jun;195(2):194-228. doi: 10.1006/jmsp.1999.7838.
The new spectroscopic technique of photoassociation of ultracold atoms is reviewed, with an emphasis on connecting this area to traditional bound-state molecular spectroscopy. In particular, in contrast to photoassociative spectra at thermal energies, which are broad and of low information content, photoassociative spectra of ultracold atoms are high resolution, permitting observation of small vibrational and rotational spacings of long-range molecular levels near dissociation (typically with outer classical turning points >20 Å). The types of detection and theoretical analysis employed are illustrated, primarily using the example of 39K2. Future directions and applications of this field (e.g., to ultracold molecular formation) are also discussed. Copyright 1999 Academic Press.
本文综述了超冷原子光缔合的新光谱技术，重点是将该领域与传统束缚态分子光谱联系起来。特别是，与热能下的光缔合光谱不同，后者宽且信息含量低，超冷原子的光缔合光谱具有高分辨率，能够观测到离解附近长程分子能级的小振动和转动间距（通常外经典转折点>20 Å）。文中主要以(^{39}K_2)为例，说明了所采用的探测和理论分析类型。还讨论了该领域的未来方向和应用（例如超冷分子的形成）。版权所有1999年，学术出版社。
