Experiments with ultracold neutrons - first 50 years

TL;DR

This paper reviews the 50-year history of ultracold neutron experiments, highlighting early experiments, key pioneers, and the current state of research in the field.

Contribution

It provides a historical overview and personal insights into the development and progress of ultracold neutron research over five decades.

Findings

First experimental observation of UCN in 50 years

Historical account of key experiments and pioneers

Current status of UCN research

Abstract

This year is 50 anniversary of the first experimental observation of ultracold neutrons (UCN). I present my reminiscences of the first experiment in Dubna, first encounter with F.L. Shapiro -- pioneer of the UCN investigations, and the early stage of the UCN experiments. Present status of investigations with UCN is shortly reviewed.