Penning‐trap mass spectrometry and neutrino physics

Abstract

Rapidly developing neutrino physics has found in Penning‐trap mass spectrometry a staunch ally in investigating a variety of fundamental problems. The most familiar are the absolute neutrino mass, possible existence of resonant neutrinoless double‐electron capture and of keV‐sterile neutrinos, and investigation of neutrino oscillations. This article is a brief review of the latest achievements and future perspectives of Penning‐trap mass spectrometry in the exploration of these problems with a focus on electron capture and double electron capture processes.