Welcome

 

About Our Group:

We design, build and exploit new types of instruments that provide qualitatively new pictures of how chemical reactions occur. By coupling mass-selective vibrational spectroscopy with cryogenic ion processing, we are able to study a wide variety of chemical phenomena, including small molecule activation, gas-liquid interfacial chemistry, and intracluster hydrogen bonding.

News

We started off the fall semester with a bang at Mory's with distinguished visitors (Payten, Liv and James) plus a few significant others. Payten and Liv were kind enough to catch a few precious items we left behind in KCL101 in the frenzied move a month ago.
September 9, 2026
We started off the fall semester with a bang at Mory’s with distinguished visitors (Payten, Liv and James) plus a few significant others. Payten and Liv were kind...

Selected Publications:

Autobiography of Mark A. Johnson


Microcanonical Kinetics of Water-Mediated Proton Transfer in 4ABAH+‧(H2O)n=4-6 Clusters (ABA = Aminobenzoic Acid): A Model System for Size-Dependent Relaxation to Ergodic Behavior


Microcanonical Kinetics of Water-Mediated, Long Range Proton Transfer in Microhydrated 4-Aminobenzoic Acid