Application of a picosecond laser plasma continuum light source to a dual-laser plasma photoabsorption experiment

Autor:	L. Dardis, Ciaran Lewis, O. Meighan, Andrew MacPhee, W. Shaikh, R.M.N. O'Rourke, Cormac McGuinness, Colin N. Danson, John Costello, I. C. E. Turcu
Rok vydání:	2000
Předmět:	Physics Continuum (design consultancy) Thorium chemistry.chemical_element Plasma Condensed Matter Physics Laser Atomic and Molecular Physics and Optics Ion law.invention Pulse (physics) chemistry law Extreme ultraviolet Picosecond Atomic physics
Zdroj:	Journal of Physics B: Atomic, Molecular and Optical Physics. 33:1159-1168
ISSN:	1361-6455 0953-4075
DOI:	10.1088/0953-4075/33/6/303
Popis:	The characteristics of an extreme-ultraviolet (XUV) continuum light source and its application to a dual-laser plasma (DLP) photoabsorption experiment are described. The continuum emitting plasma was formed by focusing a 7 ps, 248 nm, 15 mJ laser pulse onto a number of selected targets known to be good XUV continuum emitters (Sm, W, Au and Pb), while the second absorbing plasma was produced by a 15 ns, 1064 nm, 300 mJ pulse. The duration of the continuum emission for these plasmas has a mean value of ~150 ps, but depends on both the target material and the picosecond laser pulse energy. Using this picosecond DLP set-up we have been able to measure the photoabsorption spectrum of an actinide ion (thorium) for the first time.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::48f44454cf2e73efb52cc643b676be5f https://doi.org/10.1088/0953-4075/33/6/303 Zobrazit plný text záznamu