particle physics, the electron mass (symbol: me) is the mass of a stationary electron, also known as the invariant mass of the electron. It is one of the...

or substructure. The electron's mass is approximately 1/1836 that of the proton. Quantum mechanical properties of the electron include an intrinsic angular...

factors. For electrons or electron holes in a solid, the effective mass is usually stated as a factor multiplying the rest mass of an electron, me (9.11...

a•- and x-type product ions. Electron-detachment dissociation (EDD) is a method for fragmenting anionic species in mass spectrometry. It serves as a negative...

(symbol eV, also written electron-volt and electron volt) is the measure of an amount of kinetic energy gained by a single electron accelerating from rest...

the proton-to-electron mass ratio (symbol μ or β) is the rest mass of the proton (a baryon found in atoms) divided by that of the electron (a lepton found...

accelerator physics, nuclear physics, Auger electron spectroscopy, cosmology and mass spectrometry. The importance of the mass-to-charge ratio, according to classical...

antiparticle of the electron. (See also Dirac sea.) In crystals, electronic band structure calculations lead to an effective mass for the electrons that is typically...

energetic electrons interact with solid or gas phase atoms or molecules to produce ions. EI was one of the first ionization techniques developed for mass spectrometry...

light: The mass of the neutron must be of the same order of magnitude as the electron mass and, in any case, not larger than 0.01 proton mass. The continuous...

dalton differs from the unit of mass in the atomic units systems, which is the electron rest mass (me). The atomic mass constant can also be expressed...

(elementary charge). Its mass is slightly less than the mass of a neutron and 1,836 times the mass of an electron (the proton-to-electron mass ratio). Protons...

the electron degeneracy pressure, m is substituted by the electron mass me and the Fermi momentum is obtained from the Fermi energy, so the electron degeneracy...

Electron capture (K-electron capture, also K-capture, or L-electron capture, L-capture) is a process in which the proton-rich nucleus of an electrically...

1/2 (the same as the electron), and the same mass as an electron. It is the antiparticle (antimatter counterpart) of the electron. When a positron collides...

homogeneous charge distribution to the electron's relativistic mass-energy. According to modern understanding, the electron is a point particle with a point...

reduced Planck constant, m e {\displaystyle m_{\text{e}}} is the mass of an electron, e {\displaystyle e} is the elementary charge, c {\displaystyle c}...

equivalently, the magnitude of the negative electric charge carried by a single electron, which has charge −1 e. In the SI system of units, the value of the elementary...

elementary charge, and mp is the proton rest mass. There are three magnetic moments associated with an electron: one from its spin angular momentum, one from...

object and its dimension is length divided by time; while the proton-to-electron mass ratio, is dimensionless. The term "fundamental physical constant" is...

example, an electron neutrino produced in a beta decay reaction may interact in a distant detector as a muon or tau neutrino. The three mass values are...

Value: electron mass". The NIST Reference on Constants, Units, and Uncertainty. NIST. 20 May 2019. Retrieved 2019-05-20. "2018 CODATA Value: muon mass". The...

black hole with the same mass, charge and angular momentum as an electron, it would share other properties of the electron. Most notably, Brandon Carter...

the elementary charge, ħ is the reduced Planck constant, me is the electron mass, c is the speed of light. The idea of elementary magnets is due to Walther...

problem. To analyze the motion of the electron, a one-body problem, the reduced mass replaces the electron mass m e → m e m p m e + m p {\displaystyle...

assumption that the electron can be treated as free is invalid resulting in the effectively infinite electron mass equal to the nuclear mass (see e.g. the comment...

fine-structure constant, the gravitational constant and the proton-to-electron mass ratio specifically, for all of which there are ongoing efforts to improve...

negatively charged electron bound to the nucleus by the Coulomb force. Atomic hydrogen constitutes about 75% of the baryonic mass of the universe. In...

moves in a periodic potential as a free electron in vacuum, except for the electron mass me becoming an effective mass m* which may deviate considerably from...

particles (now called electrons), which he calculated must have bodies much smaller than atoms and a very large charge-to-mass ratio. Thomson is also...