electronvolt

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electronvolt

a unit of energy equal to the work done on an electron accelerated through a potential difference of 1 volt. 1 electronvolt is equivalent to 1.602 × 10--19 joule.

Electronvolt

A unit of energy used for convenience in atomic systems. Specifically, it is the change in energy of an electron, or of any particle having a charge numerically equal to that of an electron, when it is moved through a difference of potential of 1 mks volt. Its value (in mks units) is obtained from the equation W = qV, where W is energy in joules, q the charge in coulombs, and V the potential difference in volts. For a potential difference of 1 volt and the electronic charge of 1.602 × 10-19 coulomb, the electronvolt is 1.602 × 10-19 joule. See Electron, Ionization potential

electronvolt

(i-lek-tron-vohlt ) Symbol: eV. A unit of energy equal to the energy acquired by an electron falling freely through a potential difference of one volt. It is equal to 1.6022 × 10–19 joule. High-energy electromagnetic radiation is usually referred to in terms of the energy of its photons: a photon energy of 100 eV is equivalent to a radiation frequency of 2.418 × 1016 hertz. The energies of elementary particles are usually quoted in eV; their rest masses are generally referred to in terms of their energies in eV.

electronvolt

[i′lek‚trän ‚vōlt]
(physics)
A unit of energy which is equal to the energy acquired by an electron when it passes through a potential difference of 1 volt in a vacuum; it is equal to (1.60217646±0.00000006) × 10-19 volt. Abbreviated eV.
References in periodicals archive ?
Moving at top speed, your average ant will create roughly the equivalent of one trillion electron volts.
But no matter how fast these electrons spiral, they can't radiate away the 73 billion and 95 billion electron volts the two photons carried.
for commercialization of a revolutionary microcalorimeter-based X-ray detector with an energy resolution of two electron volts, some 50 times better than conventional semiconductor-based detectors.
The facilities will include a proton synchrotron, in which protons will be accelerated to 50 billion electron volts, and a neutron diffusing facility.
When positrons (also called positive electrons) collide with ordinary, negatively charged electrons, they mutually destroy each other and spawn gamma rays that have a very specific energy: 511,000 electron volts.
These extremely energetic particles become ever more scarce at the highest energies and, except for the three ultra-high-energy particles, no cosmic rays have been seen with more energy than 30-40,000,000 trillion electron volts.
By 1954, a particle accelerator capable of accelerating protons to an energy of 5 to 6 billion electron volts (BeV) had been built at the University of California.
and] masses of at least five billion electron volts.
The work used two experiments at the LHC, including the Compact Muon Solenoid (shown here), which detects protons smashed together with energies of up to 8 trillion electron volts.
In the process of doing so, we have also created a new high-performance light source technology covering the spectral regions ranging from infrared light, through the visible spectrum all the way to 'soft' X-rays with energies as high as 2,000 electron volts (i.
This year, the LHC's protons collided with 13 trillion electron volts of energy; the machine was running at 8 trillion electron volts when it exposed overwhelming evidence for the Higgs boson in 2012 (SN: 7/28/12, p.
In Fermi's all-sky maps of very-high-energy gamma radiation (1 billion to 100 billion electron volts per photon), the bubbles at first went unrecognized.