Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5449868 | Optics Communications | 2017 | 10 Pages |
Abstract
Soft x-ray and extreme ultraviolet (XUV) spectra from lead (Pb, Z=82) laser-produced plasmas (LPPs) were measured in the 1.0-7.0Â nm wavelength region employing a 150-ps, 1064-nm Nd:YAG laser with focused power densities in the range from 3.1Ã1013Â W/cm2 to 1.4Ã1014Â W/cm2. The flexible atomic code (FAC) and the Cowan's suite of atomic structure codes were applied to compute and explain the radiation properties of the lead spectra observed. The most prominent structure in the spectra is a broad double peak, which is produced by În=0, n=4-4 and În=1, n=4-5 transition arrays emitted from highly charged lead ions. The emission characteristics of În=1, n=4-5 transitions were investigated by the use of the unresolved transition arrays (UTAs) model. Numerous new spectral features generated by În=1, n=4-5 transitions in ions from Pb21+ to Pb45+ are discerned with the aid of the results from present computations as well as consideration of previous theoretical predictions and experimental data.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Tao Wu, Takeshi Higashiguchi, Bowen Li, Goki Arai, Hiroyuki Hara, Yoshiki Kondo, Takanori Miyazaki, Thanh-Hung Dinh, Fergal O'Reilly, Emma Sokell, Gerry O'Sullivan,