The mass of the nucleus, through its binding energy, continues to be of capital importance
not only for various aspects of nuclear physics, but also for other branches of physics …

This paper reviews recent experiments on tritium β-spectroscopy searching for the absolute
value of the electron neutrino mass m (ν e). By the use of dedicated electrostatic filters with …

This paper gives the 2002 self-consistent set of values of the basic constants and conversion
factors of physics and chemistry recommended by the Committee on Data for Science and …

For a detailed study of the accuracy of the Penning trap mass spectrometer ISOLTRAP all
expected sources of uncertainty were investigated with respect to their contributions to the …

Light-ion trap (LIONTRAP), a high-precision Penning-trap mass spectrometer, was used to
determine the atomic mass of He 4. Here, we report a 12 parts-per-trillion measurement of …

The precision of mass measurements in a Penning trap increases linearly with the charge of
the ion. Therefore we have attached a Penning trap, named SMILETRAP, to the electron …

Atomic mass measurements are essential for obtaining several of the fundamental
constants. The most precise atomic mass measurements, at the 10− 10 level of precision or …

We report here the atomic masses of 3 H and 3 He determined by using the Penning trap
mass spectrometer Smiletrap. The measurements are based on cyclotron frequency …

The atomic masses of the α particle and He 4 have been measured by means of a Penning
trap<? format?> mass spectrometer which utilizes a frequency-shift detector to observe …

We determine the cyclotron frequency ratio of H 2+ and D+, applying the two-pulse Ramsey-
excitation technique in the Penning-trap mass spectrometer SMILETRAP. The final result …