| Citation | Distinguished for his contributions to particle physics, particularly exploiting the bubble chamber technique to make a wide range of contributions to the physics of strong and weak interactions. Notable work in which Kalmus played the leading role include: the first quantitative study of Ke4 decay with an analysis of low energy pi pi interactions; studies of baryon resonances both strange and non-strange which are still standards; the first observation of direct electron production in hadron collisions. The last had implications for charmed particle production, and Kalmus went on to study photoproduction of charmed particles, and is an acknowledged world expert on the production and decay of these short-lived particles. |