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Search Publications by: Gillian Nave (Assoc)

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Displaying 1 - 25 of 154

Branching Fractions and Transition Probabilities for UV Transitions in the Spectrum of Cr II

November 28, 2023
Author(s)
Jacob Ward, Jacqueline Li, Jared Schwartz, Gillian Nave, Ton Raassen, Peter H. M. Uylings
We present transition probabilities for 268 spectral lines of singly-ionized chromium (Cr II) in the wavelength region 208 nm to 414 nm. Branching fractions were measured in archival Fourier transform spectra of chromium-argon and chromium-neon hollow

New Ritz Wavelengths and Transition Probabilities for Parity-Forbidden, Singly Ionised Nickel [Ni ii] Lines of Astrophysical Interest Christian P.

December 12, 2022
Author(s)
Christian P. Clear, Peter Uylings, Ton Raassen, Gillian Nave, Juliet C. Pickering
We report accurate Ritz wavelengths for parity-forbidden [Ni ii] transitions, derived from energy levels determined using high-resolution Fourier transform spectroscopy. Transitions between the 17 lowest Ni ii energy levels of even parity produced Ritz

Atomic Transition Probabilities for DyI and DyII

October 12, 2021
Author(s)
M E. Wickliffe, James E. Lawler, Gillian Nave
Atomic transition probabilities for 915 spectral lines of neutral and singly ionized dysprosium are reported. Typical uncertainties are less than +/- 10%. Branching fractions, measured using the 1.0 m Fourier transform spectrometer (FTS) at the National

The Spectrum and Term Analysis of Singly-Ionized Manganese

January 13, 2021
Author(s)
Florence Liggins, J C. Pickering, Gillian Nave, Jacob W. Ward, Wan-U Lydia Tchang-Brillet
An extensive analysis of the Mn spectrum was carried out using high-resolution Fourier transform (FT) and grating spectroscopy of Mn-Ne and Mn-Ar hollow cathode discharge sources, over the range 82 nm to 5500 nm (1820 cm −1 to 121728 cm −1 ). Spectral

Spectrum of Ni V in the Vacuum Ultraviolet

November 27, 2019
Author(s)
Jacob W. Ward, A J. Raassen, Alexander Kramida, Gillian Nave
This work presents 97 remeasured Fe V wavelengths (1200 Å to 1600 Å) and 123 remeasured Ni V wavelengths (1200 Å to 1400 Å) with uncertainties of approximately 2 mÅ. An additional 67 remeasured Fe V wavelengths and 72 remeasured Ni V wavelengths with

Transition probabilities of Co II, weak lines to the ground and low metastable levels

September 5, 2018
Author(s)
James E. Lawler, T. Feigenson, Chris Sneden, John J. Cowan, Gillian Nave
New branching fraction measurements based primarily on data from a cross dispersed echelle spectrometer are reported for 84 lines of Co II. The branching fractions for 82 lines are converted to absolute atomic transition probabilities using radiative