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...

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...

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 through an...

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...

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...

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...

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...

(elementary charge). Its mass is slightly less than the mass of a neutron and 1836 times the mass of an electron (the proton-to-electron mass ratio). Protons and...

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...

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

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...

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...

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...

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

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}...

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...

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

neutrino ( ν τ). Electrons have the least mass of all the charged leptons. The heavier muons and taus will rapidly change into electrons and neutrinos through...

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...

Value: electron mass". The NIST Reference on Constants, Units, and Uncertainty. NIST. May 2024. Retrieved 2024-05-18. "2022 CODATA Value: muon mass". The...

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...

determined the mass of the antiproton, which they measured at 1836.1536734(15) times more massive than an electron. This is the same as the mass of a "regular"...

interaction. μ or β, the proton-to-electron mass ratio (≈ 1836), the rest mass of the proton divided by that of the electron. More generally, the ratio of...

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...

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...

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...