Now showing items 11-20 of 20
He 1s2s Energies
This Mathematica notebook demonstrates how to calculate fairly accurate He energy levels using undergraduate level quantum mechanics. It is intended to accompany the manuscript "Accurate Binding Energy of the He Atom with ...
Downstream hydrogen plasma cleaning for mass metrology at NIST
On International Metrology Day, May 20, 2019, the redefinition of the International System of Units (SI) is scheduled to be implemented. When this occurs the kilogram, the last remaining unit defined by a physical artifact, ...
Gas Discharge Lamps – A Requiem
Almost a century has passed since the introduction into the market of gas discharge lamps for general lighting in the form of fluorescent lamps, made possible by the discovery of phosphors able to convert ultra-violet (UV) ...
Spectroscopic study of the 7p J=1/2 and 7p J=3/2 states in neutral cesium-133
I will start with a few observations of connections between spectroscopy and other (seemingly unrelated) research topics, then focus on Doppler free spectroscopy on the 7p J=1/2 and 7p J=3/2 states in neutral cesium-133. ...
UW Laboratory Astrophysics
In this talk I will describe the laboratory astrophysics program of the Jim Lawler group at the University of Wisconsin – Madison, focusing on the laboratory techniques and instruments used for the measurement of transition ...
High energy density plasma simulations using ultracold neutral plasmas
Strongly-coupled Coulomb systems are typically fluid-like plasmas characterized by the ratio of the nearest-neighbor electrical potential energy to the average kinetic energy. When this ratio is near unity, the plasmas are ...
How I Became a Non-Chemist
Some scientists direct their careers with laser focus to answer a small set of questions. Others wander around like a trapped photon. I will tell the story about how a plasma physicist ended up studying combustion chemistry, ...
Transition Probabilities for Neutral Cerium from Boltzmann Analysis of Fourier Transform Spectra
Poster presentation on Cerium transition probabilities
Six Lines to Tell a Story
In this talk, I will highlight a recently completed investigation into a challenge brought against our earlier work on vanadium. The discrepancy between six transition probabilities and its resolution touches on several ...
Jim Lawler's Science: Above and Below the H-Line
This presentation gives an overview of Jim Lawler's career, focusing on a few of his important contributions to science.