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, ...

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. ...

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 ...

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 ...

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, ...

Poster presentation on Cerium transition probabilities

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 ...

This presentation gives an overview of Jim Lawler's career, focusing on a few of his important contributions to science.

Studies of very metal-poor stars have focused attention on the neutron-capture (Z > 30) elements, whose dramatic star-to-star variations give us insights to element production in extreme, explosive nucleosynthesis environments. ...

Overview of the 2018 Wisconsin Atomic Spectroscopy Seminar in honor of Prof. James E. Lawler. Includes biographical information and the scientific program.