• Thumbnail for Electron capture
    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...
    14 KB (1,279 words) - 19:26, 9 February 2024
  • Thumbnail for Electron capture detector
    An electron capture detector (ECD) is a device for detecting atoms and molecules in a gas through the attachment of electrons via electron capture ionization...
    7 KB (747 words) - 09:00, 2 March 2024
  • of electron capture ionization. The electron affinity is positive when energy is released on electron capture. In solid state physics, the electron affinity...
    22 KB (1,458 words) - 00:23, 5 February 2024
  • Thumbnail for Beta decay
    same. In electron capture, an inner atomic electron is captured by a proton in the nucleus, transforming it into a neutron, and an electron neutrino is...
    58 KB (7,025 words) - 11:00, 14 April 2024
  • Thumbnail for Electron-capture dissociation
    Electron-capture dissociation (ECD) is a method of fragmenting gas-phase ions for structure elucidation of peptides and proteins in tandem mass spectrometry...
    26 KB (3,259 words) - 20:43, 30 January 2024
  • Thumbnail for Double electron capture
    electron capture is a decay mode of an atomic nucleus. For a nuclide (A, Z) with a number of nucleons A and atomic number Z, double electron capture is...
    8 KB (854 words) - 10:58, 14 April 2024
  • Electron capture ionization is the ionization of a gas phase atom or molecule by attachment of an electron to create an ion of the form A−{\displaystyle...
    9 KB (1,108 words) - 21:14, 22 December 2023
  • Thumbnail for Tandem mass spectrometry
    molecule M. Adding an electron through an ion-ion reaction is called electron-transfer dissociation (ETD). Similar to electron-capture dissociation, ETD induces...
    60 KB (7,379 words) - 16:27, 20 April 2024
  • Thumbnail for Supernova
    type called an electron capture supernova. ... In an electron capture supernova, as the core runs out of fuel, gravity forces electrons in the core into...
    199 KB (21,769 words) - 00:32, 23 April 2024
  • Thumbnail for Radioactive decay
    produces antineutrinos). In electron capture, some proton-rich nuclides were found to capture their own atomic electrons instead of emitting positrons...
    96 KB (10,002 words) - 06:47, 22 April 2024
  • Thumbnail for Positron emission
    by electron capture. For low-energy decays, electron capture is energetically favored by 2mec2 = 1.022 MeV, since the final state has an electron removed...
    9 KB (1,122 words) - 10:56, 4 March 2024
  • with a nucleus containing 26 protons and 29 neutrons. It decays by electron capture to manganese-55 and this process has a half-life of 2.737 years. The...
    8 KB (886 words) - 15:37, 16 October 2023
  • Thumbnail for Internal conversion
    interacts electromagnetically with one of the orbital electrons of an atom. This causes the electron to be emitted (ejected) from the atom. Thus, in internal...
    12 KB (1,699 words) - 04:27, 8 March 2024
  • iodine, after iodine-129. Its half-life is 59.49 days and it decays by electron capture to an excited state of tellurium-125. This state is not the metastable...
    16 KB (1,797 words) - 08:48, 11 December 2023
  • Thumbnail for Nuclear reaction
    nuclear orbital in the same way that the pair of electrons in the helium atom occupy a filled 1s electron orbital). Consequently, alpha particles appear...
    20 KB (2,392 words) - 20:03, 20 April 2024
  • Thumbnail for Atom
    accompanied by the emission of an electron and an antineutrino, while proton to neutron transition (except in electron capture) causes the emission of a positron...
    121 KB (12,390 words) - 01:50, 24 April 2024
  • Thumbnail for Chemical ionization
    using an electron capture detector coupled to a gas chromatograph. Negative ions are formed by resonance capture of a near-thermal energy electron, dissociative...
    16 KB (2,129 words) - 01:40, 15 December 2023
  • Thumbnail for Electron-transfer dissociation
    (MS/MS). Similar to electron-capture dissociation, ETD induces fragmentation of large, multiply-charged cations by transferring electrons to them. ETD is...
    16 KB (1,804 words) - 08:57, 2 March 2024
  • Thumbnail for Stellar evolution
    stellar core collapses, the pressure causes electrons and protons to fuse by electron capture. Without electrons, which keep nuclei apart, the neutrons collapse...
    49 KB (6,424 words) - 20:50, 5 March 2024
  • quantified as the detector output. In the electron capture mode, the PDD is a selective detector for monitoring high electron affinity compounds such as freons...
    3 KB (419 words) - 16:44, 20 February 2019
  • Thumbnail for Ion source
    by the electron beam ion trap. Electron capture ionization (ECI) is the ionization of a gas phase atom or molecule by attachment of an electron to create...
    58 KB (7,140 words) - 08:46, 21 February 2024
  • Thumbnail for Calcium
    high neutron flux to allow short-lived 45Ca to capture a neutron. 48Ca is produced by electron capture in the r-process in type Ia supernovae, where high...
    47 KB (5,908 words) - 10:22, 20 April 2024
  • Thumbnail for Double beta decay
    orbital electrons (double electron capture). If the mass difference between the parent and daughter atoms is more than 1.022 MeV/c2 (two electron masses)...
    35 KB (3,626 words) - 02:40, 11 February 2024
  • making up 68.077% of the natural abundance. Possible sources include electron capture from copper-58 and EC + p from zinc-59. Nickel-59 is a long-lived cosmogenic...
    19 KB (1,463 words) - 18:54, 11 January 2024
  • Thumbnail for Gallium
    both beta minus decay and electron capture. Gallium-67 is unique among the light isotopes in having only electron capture as a decay mode, as its decay...
    73 KB (8,735 words) - 06:54, 15 April 2024
  • Negative electron affinities can be used in those cases where electron capture requires energy, i.e. when capture can occur only if the impinging electron has...
    66 KB (4,066 words) - 08:58, 29 March 2024
  • an electron) with a maximum energy of 1.31 MeV and an antineutrino. In about 10.72% of events, it decays to argon-40 (40Ar) by electron capture (EC)...
    8 KB (866 words) - 18:07, 29 February 2024
  • stars, or in radioactive isotopes capable of electron capture, neutrons are created by electron capture: p + e− → n + ν e. This is similar to the inverse...
    7 KB (724 words) - 12:54, 5 January 2024
  • Thumbnail for Shockley–Queisser limit
    the energy of red light, that energy is not captured by devices with a single p-n junction. The electron is ejected with higher energy when struck by...
    44 KB (6,215 words) - 05:26, 24 March 2024
  • another body Asteroid capture, when an asteroid is gravitationally captured Electron capture, a nuclear reaction Stream capture, a geomorphological phenomenon...
    2 KB (310 words) - 03:51, 21 January 2024