Office Hours: Monday 9:00 - 11:00 a.m. • Office: JILA X435 •
My group studies collisions and reactions of simple cold molecules. Our ultimate goal is to understand the quantum mechanical processes involved in making and breaking a chemical bond. We aim to control the reacting molecules external and internal degrees of freedom in the quantum regime. To accomplish this control, we slow down a supersonically cooled molecular beam using time-varying inhomogeneous electric fields (Stark deceleration). The cold (~100 mK) molecules are then loaded into an electrostatic trap to allow for interactions to be studied for several seconds.
- “Rotational-State Purity of Decelerated Beams,” N. J. Fitch, D. A. Esteves, M. I. Fabrikant, T. C. Briles, Y. Shyur, L. P. Parazzoli, and H.J. Lewandowski, J. Mol. Spec. 278, p 1-6 (2012).
- “The Process of Transforming an Advanced Lab Course: Goals, Curriculum, and Assessments,” B. Zwickl, N. Finkelstein, and H. J. Lewandowski, American Journal of Physics 81, p 63 (2013)
- L. P. Parazzoli, N. J. Fitch, P. S. Zuchowski, J. M. Hutson, and H. J. Lewandowski, "Large Effects of Electric Fields on Atom-Molecule Collisions at Millikelvin Temperatures," Physical Review Letters 106, 193201 (2011).
- N. J. Fitch, C. A. Weidner, L. P. Parazzoli, H. Dullin, and H. J. Lewandowski, "Swinging and Springing," APS - Physics (2009).
- N. J. Fitch, C. A. Weidner, L. P. Parazzoli, H. Dullin, and H. J. Lewandowski, "Experimental demonstration of classical Hamiltonian monodromy in the 1:1:2 resonant elastic pendulum ,"Phys. Rev. Lett. 103, 034301 (2009).