Zobrazeno 1 - 10
of 310
pro vyhledávání: '"Lawler, J E"'
We report new measurements of branching fractions for 20 UV and blue lines in the spectrum of neutral silicon (Si I) originating in the 3$s^{2}$3$p$4$s$ $^{3}$P$^{\rm o}_{1,2}$, $^{1}$P$^{\rm o}_{1}$ and 3$s$3$p^{3}$ $^{1}$D$^{\rm o}_{1,2}$ upper lev
Externí odkaz:
http://arxiv.org/abs/2301.11391
The goals of this study are 1) to test the best theoretical transition probabilities for Ca I (a relatively light alkaline earth spectrum) from a modern ab initio calculation using configuration interaction plus many body perturbation theory against
Externí odkaz:
http://arxiv.org/abs/2105.10534
We report new branching fraction measurements for 199 UV and optical transitions of Hf II. These transitions range in wavelength (wavenumber) from 2068- 6584 A (48322-15183 cm-1) and originate in 17 odd-parity upper levels ranging in energy from 3857
Externí odkaz:
http://arxiv.org/abs/2102.11308
We report new branching fractions for 121 UV lines from the low-lying odd-parity levels of Fe II belonging to the z6Do, z6Fo, z6Po, z4Fo, z4Do and z4Po terms of the 3d6(5D)4p configuration. These lines range in wavelength from 2250 - 3280 {\AA} and o
Externí odkaz:
http://arxiv.org/abs/1907.11760
Autor:
Aprahamian, A., Surman, R., Frebel, A., McLaughlin, G. C., Arcones, A., Balantekin, A. B., Barnes, J., Beers, Timothy C., Holmbeck, Erika M., Yoon, Jinmi, Brodeur, Maxime, Sprouse, T. M., Vassh, Nicole, Cizewski, Jolie A., Clark, Jason A., Cote, Benoit, Couch, Sean M., Eichler, M., Engel, Jonathan, Ezzeddine, Rana, Fuller, George M., Giuliani, Samuel A., Grzywacz, Robert, Han, Sophia, Horowitz, C. J., Kankainen, Anu, Korobkin, Oleg, Kwiatkowski, A. A., Lawler, J. E., Lippuner, Jonas, Litvinova, Elena, Mathews, G. J., Mumpower, M. R., Naimi, S., Nazarewicz, W., O'Connor, Evan, O'Shea, Brian W., Perego, Albino, Perdikakis, G., Radice, David, Richers, Sherwood, Roberts, Luke F., Robin, Caroline, Roederer, Ian U., Siegel, Daniel M., Schunck, Nicolas, Spyrou, A., Zhu, Yong-Lin
In July 2018 an FRIB Theory Alliance program was held on the implications of GW170817 and its associated kilonova for r-process nucleosynthesis. Topics of discussion included the astrophysical and nuclear physics uncertainties in the interpretation o
Externí odkaz:
http://arxiv.org/abs/1809.00703
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
Externí odkaz:
http://arxiv.org/abs/1806.00581
We derive a new abundance for vanadium in the bright, mildly metal-poor red giant Arcturus. This star has an excellent high-resolution spectral atlas and well-understood atmospheric parameters, and it displays a rich set of neutral vanadium lines tha
Externí odkaz:
http://arxiv.org/abs/1712.06942
Autor:
Belmonte, M. T., Pickering, J. C., Ruffoni, M. P., Hartog, E . A. Den, Lawler, J. E., Guzman, A., Heiter, U.
We report new experimental Fe I oscillator strengths obtained by combining measurements of branching fractions measured with a Fourier Transform spectrometer and time-resolved laser-induced fluorescence lifetimes. The study covers the spectral region
Externí odkaz:
http://arxiv.org/abs/1710.07571
Autor:
Zamora, O., Garcia-Hernandez, D. A., Prieto, C. Allende, Carrera, R., Koesterke, L., Edvardsson, B., Castelli, F., Plez, B., Bizyaev, D., Cunha, K., Perez, A. E. Garcia, Gustafsson, B., Holtzman, J. A., Lawler, J. E., Majewski, S. R., Manchado, A., Meszaros, Sz., Shane, N., Shetrone, M., Smith, V. V., Zasowski, G.
The Sloan Digital Sky Survey--III (SDSS--III) Apache Point Observatory Galactic Evolution Experiment (APOGEE) has obtained high resolution (R $\sim$ 22,500), high signal-to-noise ratio ($>$ 100) spectra in the H$-$band ($\sim$1.5$-$1.7 $\mu$m) for ab
Externí odkaz:
http://arxiv.org/abs/1502.05237
We report measurements of the absolute excitation frequencies of $^{165}$Ho $4f^{11}6sns$ and $4f^{11}6snd$ odd-parity Rydberg series. The states are detected through depletion of a magneto-optical trap via a two-photon excitation scheme. Measurement
Externí odkaz:
http://arxiv.org/abs/1412.1428