Rydberg-Matter and Excited-State Clusters
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This is a special issue on “Rydberg-Matter and Excited-State Clusters.” It contains four invited reviews and six contributed papers. The theme of the invited reviews (and one contributed paper) is “Rydberg Matter Clusters” while the remaining contributed papers deal with excited-state and/or unusual clusters with interesting properties.
Rydberg matter (RM) is an exotic phase (or state) of matter formed by energetic, so-called Rydberg atoms (i.e. atoms in excited states). RM can be likened to dusty plasmas with small excited-state clusters. Rydberg matter was predicted in the early 1980s by É. A. Manykin, M. I. Ozhovan and P. P. Poluéktov [1, 2] and is now an intensive field of cluster research. This special issue provides an overview of the current development of the field (with special emphasis on certain aspects of RM).
Rydberg matter normally consists of planar clusters of excited-state atoms arranged in two-dimensional hexagonal patterns with magic numbers of 7, 19, 37, 61, 91,...
- 1.É. A. Manykin, M. I. Ozhovan, and P. P. Poluéktov (1980). Transition of an excited gas to a metallic state. Sov. Phys. Tech. Phys. Lett. 6, 95.Google Scholar
- 2.É. A. Manykin, M. I. Ozhovan, and P. P. Poluéktov (1981). On the collective electronic state in a system of strongly excited atoms. Sov. Phys. Dokl. 26, 974.Google Scholar