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MICS thanks the Department of Chemistry and Biochemistry for funding!
Want feedback on a technique that you haven't necessarily perfected yet?
Interested in learning more about the chemistry your fellow gradute students and post docs do?
MICS is organized by and for graduate students and post docs.
MICS features bi-weekly speakers from different programs at the University of Colorado, Boulder, as well as surrounding govermnet labratories, NOAA, NCAR, NIST and NREL. Seminars have plenty of time for discussion, as well as refreshments, all in a relaxed environment. Presenters are encouraged to focus on the methods and techniques used in their research.
Talks are limited to 20 to 40 minutes in length, so that, including questions and discussion, the seminar is limited to about an hour. They should focus on methods and techniques (experimental or theoretical), and be geared towards an interdivisional audience. The MICS was conceived as a way for graduate students and post docs to learn about the variety of research being done in our department and other science departments, such as physics, biology, engineering. In an effort to encourage questions and discussion, and to keep things fun and informative, the seminar is expressly by and for graduate students and post docs.
WHEN: Wednesdays at 12:00 p.m.
WHERE: CIRES S274
THIS WEEK December 3, 2008:
Speaker: Meghan Dunn (Vaida Lab)
The Talk:
Sunlight initiated chemistry of organic acids: FTIR spectroscopy, CRD, NMR, and more
The Abstract:
Most atmospheric chemistry is thought of as occurring through electronic excitations. Our lab looks at lower energy, ground electronic state photochemistry which occurs through vibrational overtone excitation of the OH stretch. The feasibility of overtone-induced chemistry is explored theoretically and spectroscopically before relevant molecules are selected for photochemical studies. The photochemical experiments use visible light and a variety of conditions to investigate the interaction of organic acids with light and water. After photolysis we quantify the products through a range of methods including FT-infrared spectroscopy, NMR, and more.
Speaker: Nathan Lemke (Oates Lab)
The Talk: High-Resolution Spectroscopy of Lattice-Confined Ytterbium Atoms
The Abstract:
At NIST we are developing an optical clock based on the 1S0-3P0 transition in neutral Yb atoms. To eliminate frequency shifts related to the motion of the atoms, we use an optical lattice tuned to the “magic wavelength” to tightly confine the atoms during spectroscopy. By comparing the Yb clock with other similar atomic clocks at NIST and JILA, we have measured the frequency of this optical transition with an uncertainty less than .5 Hz, which is a fractional uncertainty below 10-15. In this talk, I will briefly discuss the main components of any optical clock as well as the spectroscopic methods we employ.
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