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in creator/contributor: "Zacarias, A.S."

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Measurements of 2s-2p transition energies in helium-like and lithium-like nickel

The wavelength of the fine structure transition 1s2s /sup 3/S/sub 1/ - 1s2p /sup 3/P/sub 2/ in Ni XXVII has been measured using fast-ion spectroscopy. The transition energy is sensitive to relativistic and Lamb shift corrections in this high-Z two-electron system. Comparison is made with measurements in other high-Z ions and with recent theoretical calculations. A preliminary measurement of the 1s/sup 2/2s /sup 2/S/sub 1/2/ - 1s/sup 2/2p /sup 2/P/sub 1/2/ find structure transition in Ni XXVI is… more

Date: January 1, 1987

Creator: Zacarias, A.S.; Livingston, A.E.; Lu, Y.N.; Ward, R.F.; Berry, H.G. & Dunford, R.W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Spectroscopy of highly-ionized atoms using positiion-sensitive detection

New results of atomic structure and atomic lifetime measurements in highly-ionized few-electron atoms obtained using position-sensitive detection of extreme ultraviolet emission from excited fast ions are reported. Data are presented from experiments run at the Notre Dame Tandem Accelerator and at the Argonne ATLAS facility using beam foil spectroscopy with a photon-counting position-sensitive imaging detector. The results include excited state lifetimes in Si XI and Si XII involving both reson… more

Date: January 1, 1992

Creator: Kukla, K. W.; Livingston, A. E.; Serpa, F. G.; Zacarias, A. S.; Berry, H. G.; Dunford, R. W. et al.