Fatemi FK, Dally AJ, Bloomfield LA. Electronic excitation and thermal effects in alkali-halide cluster anions.
PHYSICAL REVIEW LETTERS 2000;
84:51-54. [PMID:
11015832 DOI:
10.1103/physrevlett.84.51]
[Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/1999] [Indexed: 05/23/2023]
Abstract
We have observed electronically excited states in alkali-halide cluster anions with one excess electron. Using photoelectron spectroscopy, we have found two narrow states in (KI)-2, (NaI)-2, and (NaCl)-2, consistent with a dipole-bound electron, while larger cluster anions exhibit a single broad excited state. In the larger systems, electronic excitation is often accompanied by vibrational excitation and thus a change in cluster temperature. Such temperature changes affect cluster structure and in some cases lead to rapid thermal isomerization.
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