Temperature Dependence of the Optical Response of Small, Open Shell Sodium Clusters

Autor:	Christina Schmitt, Thomas Reiners, Christoph Ellert, Martin U. Schmidt, Hellmut Haberland
Rok vydání:	1995
Předmět:	Free electron model Crystallography Materials science Absorption spectroscopy Cluster (physics) General Physics and Astronomy Molecule Absorption (logic) Atomic physics Open shell Energy (signal processing) Ion
Zdroj:	Physical Review Letters. 75:1731-1734
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.75.1731
Popis:	The optical absorption of small, open sodium cluster ions (Na{sup +}{sub {ital n}},{ital n}=4, 7, and 11) exhibit an unexpectedly large temperature dependence. Clearly separated absorption lines observed for cold clusters ({ital T}{similar_to}35 K) are interpreted as transitions between electronic states of the Na{sup +}{sub {ital n}} molecule. At the highest temperature ({ital T}{gt}380 K), however, the clusters are liquid, and broad absorption peaks are observed whose energy positions can be explained for {ital n}{gt}7 by the model of nearly free electrons oscillating in a spheroidal container.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::274a06ff5d8e3ebafcac45c99ea4414d https://doi.org/10.1103/physrevlett.75.1731 Zobrazit plný text záznamu