7 articles
Atomic Mass Evaluation
The Atomic Mass Evaluation (AME) is a periodic, peer-reviewed evaluation that combines all published experimental data into a recommended table of atomic mass values with uncertainties.
Binding energy
Binding energy, related to the mass defect, is the energy needed to disassemble an atomic nucleus into individual protons and neutrons, typically about 8 MeV per nucleon.
Mass defect
The mass defect is the difference between an atomic nucleus's mass and the sum of its free protons and neutrons; it equals the nuclear binding energy.
MATS and LaSpec
MATS and LaSpec are complementary precision experiments under construction at FAIR in Darmstadt, Germany, part of NUSTAR, studying exotic short-lived nuclei via Penning-trap mass measurements and collinear laser spectroscopy.
Nuclear binding energy
Nuclear binding energy is the energy required to separate an atomic nucleus into free protons and neutrons, appearing physically as a loss of mass, the mass defect.
Packing fraction (mass spectrometry)
The packing fraction, introduced by Francis William Aston in the 1920s, measures how far an isotope's mass deviates from its whole-number mass number, reflecting nuclear binding energy.
Symmetry energy
The symmetry energy is the energy cost in nuclear matter of replacing protons with neutrons, defined as the energy difference between pure neutron matter and symmetric matter.