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

Mark and Gary’s Thursdays at Portofino Nanodinner Club was brightened up by a visit with group alumna Dr. Olga Gorlova and her lovely daughter Fiorella.
September 28, 2026
Also joining was the newly appointed West Campus analytical core director Dr. Fabian Menges. Olga is among the “Yale P-Chem West” crew working at Intel. We send our warmest...
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