Heather Lewandowski Portrait
Professor • Associate Chair - Engineering Physics • EPEN Faculty Advisor (Student's Last Name: T-Z)

Office: JILA X435

Office Hours: Friday 3:00pm - 5:00pm • Visit Buff Portal Advising for Zoom link •

Research Interests:

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.

Selected Publications:

  1. “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).
  2. “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)
  3. 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).
  4. N. J. Fitch, C. A. Weidner, L. P. Parazzoli, H. Dullin, and H. J. Lewandowski, "Swinging and Springing," APS - Physics (2009).
  5. 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).