• 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 (1,274 words) - 02:07, 2 March 2025
  • 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 (1,116 words) - 23:17, 27 May 2025
  • 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) - 03:11, 15 January 2025
  • 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...
    201 KB (21,895 words) - 15:47, 22 May 2025
  • 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 (1,468 words) - 11:02, 24 April 2025
  • 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) - 01:02, 26 August 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...
    64 KB (7,657 words) - 18:21, 18 May 2025
  • 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 (3,262 words) - 20:43, 30 January 2024
  • 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 (7,443 words) - 00:43, 3 October 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...
    95 KB (9,852 words) - 17:21, 23 May 2025
  • 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 (7,164 words) - 12:18, 20 February 2025
  • 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) - 18:26, 16 January 2025
  • iodine, after iodine-129. Its half-life is 59.392 days and it decays by electron capture to an excited state of tellurium-125. This state is not the metastable...
    16 KB (1,878 words) - 07:45, 19 April 2025
  • 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 (1,800 words) - 00:09, 17 October 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 (422 words) - 16:44, 20 February 2019
  • 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 (1,143 words) - 20:21, 6 February 2025
  • 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 (2,132 words) - 10:15, 14 May 2025
  • 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 (6,222 words) - 12:09, 25 May 2025
  • 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...
    126 KB (12,995 words) - 03:09, 12 May 2025
  • 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...
    50 KB (6,439 words) - 09:55, 22 May 2025
  • 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 (1,697 words) - 20:49, 3 February 2025
  • Thumbnail for Crab Nebula
    an electron-capture supernova The 1054 supernova explosion that created the Crab Nebula had been thought to be the best candidate for an electron-capture...
    51 KB (5,845 words) - 01:23, 9 May 2025
  • electron capture and beta decay, both of which would bring the nuclei closer to the beta-stability line where the island is expected to be. Electron capture...
    74 KB (12,027 words) - 18:46, 26 March 2025
  • Thumbnail for Luis Walter Alvarez
    California, Berkeley. Alvarez devised a set of experiments to observe K-electron capture in radioactive nuclei, predicted by the beta decay theory but never...
    54 KB (6,098 words) - 09:18, 17 May 2025
  • Thumbnail for Island of stability
    heavier isotopes (such as 291Mc, 291Fl, and 291Nh) may also undergo electron capture (converting a proton into a neutron) in addition to alpha decay with...
    91 KB (8,860 words) - 13:25, 28 May 2025
  • Thumbnail for James Lovelock
    theories of cryonics (the cryopreservation of humans). He invented the electron capture detector and, using it, became the first to detect the widespread presence...
    79 KB (7,293 words) - 22:18, 24 May 2025
  • Thumbnail for Potassium-40
    of the electron capture decay release further photons, when electrons from the outer shells fall into the inner shells to replace the electron taken from...
    11 KB (1,207 words) - 05:47, 18 May 2025
  • 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...
    75 KB (8,936 words) - 12:49, 26 May 2025
  • astatine-218 exhibit beta minus decay, while astatine-211 undergoes electron capture. The most stable isotope is astatine-210, which has a half-life of...
    82 KB (9,331 words) - 17:41, 25 May 2025
  • 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...
    48 KB (6,014 words) - 07:54, 27 May 2025