Fall seminar Doing Cool Chemistry with Cold Physics by Dr. Douglas Goodman November 20, 2019 11:00am Buckman Theater
Dr. Douglas Goodman Assistant Professor Physics
November 20, 2019 11:00am Buckman Theater
Modern laser techniques can provide quantum-limited control of an atom or ion’s electronic state during a chemical reaction. Results of one such experiment examining laser-controlled charge-exchange reactions between co-trapped cold sodium atoms (~500 uK) and calcium ions (~100 K) will be presented. The study demonstrated how the reaction rates of individual entrance channels can be measured and manipulated by controlling the reactants' electronic states and/or collision energy. Of the channels studied, the Na[P] + Ca+[D] channel was the strongest with a rate constant ~10-8 cm3/s at an ion temperature of 200 K, which exceeds the classically predicted Langevin rate limit.
Dr. Goodman is an Assistant Professor of Physics at Quinnipiac University. He earned his B.S. at Trinity College (2006) and his M.S. and Ph.D. in Physics at the University of Connecticut (2015). Prof. Goodman's research interests are in the field of experimental ultracold atomic, molecular, and optical (AMO) physics.
Wednesday, October 30, 2019
Thursday, October 17, 2019
Fall Seminar: Phaeocystis antarctica and the Marine Sulfur Cycle by Dr. Joanna Kinsey Nov. 7, 2019 1:00 pm Buckman Theatre
Fall Seminar: Phaeocystis antarctica and the Marine Sulfur Cycle by Dr. Joanna Kinsey
Dr. Joanna Kinsey, Assistant Professor Chemistry
Nov. 7, 2019 1:00 pm Buckman Theatre
The marine sulfur cycle has been studied extensively since the 1987 hypothesis that Earth’s radiative budget and climate was influenced by the ocean-atmospheric coupling of dimethylsulfide (DMS). The primary source of DMS is from the enzymatic lysis of dimethylsulfoniopropionate (DMSP), a sulfur-containing compound produced by several taxa of algae and corals. Phaeocystis antarctica, a high-DMSP producing algal species found in the Southern Ocean, can form blooms covering hundreds of km2 and ~23% of the primary production in high latitude (>60°S) waters. Coinciding with these blooms are high concentrations of sulfur and carbon compounds, that once in the dissolved phase, are readily consumed by heterotrophic bacteria, photolyzed, or vented to the atmosphere. This seminar will review the marine sulfur cycle and present current and future research on DMS and related compounds.
Dr. Kinsey joined the QU Department of Chemistry and Physical Sciences in August 2018. She received her Ph.D. from the State University of New York, College of Environmental Science and Forestry in Environmental Chemistry in 2014 and was a post-doctoral student at North Carolina State University. She has participated on several coastal field projects and six research cruises that include cruises to Antarctica and diving on the HOV Alvin submersible. Her research focuses on sulfur and carbon cycling in coastal and open ocean regions.
Dr. Joanna Kinsey, Assistant Professor Chemistry
Nov. 7, 2019 1:00 pm Buckman Theatre
The marine sulfur cycle has been studied extensively since the 1987 hypothesis that Earth’s radiative budget and climate was influenced by the ocean-atmospheric coupling of dimethylsulfide (DMS). The primary source of DMS is from the enzymatic lysis of dimethylsulfoniopropionate (DMSP), a sulfur-containing compound produced by several taxa of algae and corals. Phaeocystis antarctica, a high-DMSP producing algal species found in the Southern Ocean, can form blooms covering hundreds of km2 and ~23% of the primary production in high latitude (>60°S) waters. Coinciding with these blooms are high concentrations of sulfur and carbon compounds, that once in the dissolved phase, are readily consumed by heterotrophic bacteria, photolyzed, or vented to the atmosphere. This seminar will review the marine sulfur cycle and present current and future research on DMS and related compounds.
Dr. Kinsey joined the QU Department of Chemistry and Physical Sciences in August 2018. She received her Ph.D. from the State University of New York, College of Environmental Science and Forestry in Environmental Chemistry in 2014 and was a post-doctoral student at North Carolina State University. She has participated on several coastal field projects and six research cruises that include cruises to Antarctica and diving on the HOV Alvin submersible. Her research focuses on sulfur and carbon cycling in coastal and open ocean regions.
Subscribe to:
Posts (Atom)