5 papers
Rotational-state purity of Stark-decelerated molecular beams
N. J. Fitch, D. A. Esteves, M. I. Fabrikant +4
Cold, velocity-controlled molecular beams consisting of a single quantum state promise to be a powerful tool for exploring molecular scattering interactions. In recent years, Stark…
Advances in Atomic Data for Neutron-Capture Elements
N. C. Sterling, M. C. Witthoeft, D. A. Esteves +4
Neutron(n)-capture elements (atomic number Z>30), which can be produced in planetary nebula (PN) progenitor stars via s-process nucleosynthesis, have been detected in nearly 100 PN…
Experimental Photoionization Cross-Section Measurements in the Ground and Metastable State Threshold Region of Se+
N. C. Sterling, D. A. Esteves, R. C. Bilodeau +4
Absolute photoionization cross-section measurements are reported for Se+ in the photon energy range 18.0-31.0 eV, which spans the ionization thresholds of the 4S_{3/2} ground state…
New Atomic Data for Trans-Iron Elements and Their Application to Abundance Determinations in Planetary Nebulae
N. C. Sterling, M. C. Witthoeft, D. A. Esteves +6
[Abridged] Investigations of neutron(n)-capture element nucleosynthesis and chemical evolution have largely been based on stellar spectroscopy. However, the recent detection of the…
Improved Neutron-Capture Element Abundances in Planetary Nebulae
N. C. Sterling, H. L. Dinerstein, S. Hwang +11
Spectroscopy of planetary nebulae (PNe) provides the means to investigate s-process enrichments of neutron(n)-capture elements that cannot be detected in asymptotic giant branch (A…