Cluster formation and uranium photoionization in the afterglow of a pulsed hollow cathode lamp

Autor: José W. Neri, Rudimar Riva, N. A. S. Rodrigues, C. Schwab, A. Mirage, M.G. Destro, C. A. B. Silveira
Předmět:
Zdroj: Scopus-Elsevier
Popis: Uranium photoionization was observed in the afterglow of pulsed hollow cathode lamps illuminated by a dye laser tuned near the electronic transition around 591.5 nm (5L60−16 900 cm−1 7M7). The photoionization signal was used to monitor the time evolution of the ground state uranium vapor density in the cathode hole. Lifetimes over 1 ms were measured for the uranium vapor; that makes this device attractive for multistep photoionization spectroscopy. The obtained results lead to the conclusion that these long times are due to cluster formation in the afterglow.
Databáze: OpenAIRE