• Penning ionization is a form of chemi-ionization, an ionization process involving reactions between neutral atoms or molecules. The Penning effect is...
    8 KB (1,038 words) - 00:30, 30 May 2024
  • {\displaystyle G^{*}+M\to M^{+\bullet }+e^{-}+G} Penning ionization occurs when the target molecule has an ionization potential lower than the internal energy...
    9 KB (1,220 words) - 02:12, 6 October 2024
  • Thumbnail for Ion source
    the asterisk) interacts with B to form the ion AB+. Penning ionization is a form of chemi-ionization involving reactions between neutral atoms or molecules...
    58 KB (7,164 words) - 22:50, 2 June 2025
  • many different ionization techniques used for mass spectrometry. Penning ionization Associative ionization Charge-exchange ionization Auger effect Jozef...
    10 KB (1,561 words) - 15:50, 23 June 2024
  • curves. Penning ionization is a form of chemi-ionization, an ionization process involving reactions between neutral atoms or molecules. The Penning effect...
    12 KB (1,280 words) - 22:46, 26 January 2024
  • to produce analyte ions. Analytes with low ionization energy may be ionized directly. The DART ionization process can produce positive or negative ions...
    22 KB (2,883 words) - 06:31, 20 February 2025
  • Thumbnail for Electron ionization
    Electron ionization (EI, formerly known as electron impact ionization and electron bombardment ionization) is an ionization method in which energetic electrons...
    31 KB (4,013 words) - 01:38, 25 May 2025
  • atoms then can ionize the quench gas particles by energy transfer via collisions; known as the Penning effect. A very common Penning mixture of about...
    3 KB (430 words) - 11:30, 25 August 2024
  • Thumbnail for Pressure measurement
    There are two subtypes of cold-cathode ionization gauges: the Penning gauge (invented by Frans Michel Penning), and the inverted magnetron, also called...
    76 KB (10,204 words) - 05:36, 26 May 2025
  • energy storage device Penning gauge, vacuum gauge Penning ionization, form of ionization Penning mixture, a gas mixture Pony penning, annual pony roundup...
    794 bytes (120 words) - 03:27, 2 March 2021
  • An ionization instability is any one of a category of plasma instabilities which is mediated by electron-impact ionization. In the most general sense...
    7 KB (776 words) - 18:24, 12 May 2024
  • Thumbnail for Ambient ionization
    Ambient ionization is a form of ionization in which ions are formed in an ion source outside the mass spectrometer without sample preparation or separation...
    62 KB (5,967 words) - 10:36, 27 May 2024
  • Thumbnail for Geiger–Müller tube
    avalanches. This combination of gases is known as a Penning mixture and makes use of the Penning ionization effect. The modern halogen-filled G–M tube was...
    32 KB (4,361 words) - 18:17, 13 May 2025
  • Thumbnail for Gilles Holst
    for the Van der Pol oscillator, and Frans Michel Penning, known for Penning ionization and the Penning mixture. In 1908 he became a geprüfter Fachlehrer...
    2 KB (193 words) - 08:45, 5 November 2024
  • Thumbnail for Duoplasmatron
    mass spectrometers and other types of instruments. In comparison to Penning ionization sources, the duoplasmatron features advantages such as less expenditure...
    4 KB (529 words) - 01:31, 17 February 2024
  • Thumbnail for Plasma (physics)
    Plasma (physics) (redirect from Ionized gas)
    temperatures are usually needed to sustain ionization, which is a defining feature of a plasma. The degree of plasma ionization is determined by the electron temperature...
    62 KB (6,405 words) - 07:57, 3 June 2025
  • Thumbnail for Mass spectrometry
    electrospray ionization (ESI) and Koichi Tanaka for the development of soft laser desorption (SLD) and their application to the ionization of biological...
    82 KB (10,342 words) - 13:45, 23 May 2025
  • Thumbnail for Ion trap
    were first explored by F. M. Penning (1894–1953), who observed that electrons released by the cathode of an ionization vacuum gauge follow a long cycloidal...
    20 KB (2,685 words) - 18:23, 23 February 2025
  • Thumbnail for MasSpec Pen
    mass spectrometer. Desorption electrospray ionization (DESI) was the first liquid-based ambient ionization MS method. DESI employed a spray of charged...
    20 KB (2,413 words) - 06:22, 10 March 2025
  • Thumbnail for Quartz fiber dosimeter
    decrease in electrostatic charge on a metal conductor in an ionization chamber, due to ionization of the air in the chamber by radiation. It was invented...
    10 KB (1,227 words) - 21:24, 23 December 2023
  • VIII > VII at long distance, the Penning ionization pathway or associative ionization are possible: Penning ionization : Rg * + RX → Rg + RX+ + e− with...
    202 KB (22,323 words) - 22:30, 14 May 2025
  • equivalent of the binding energy Eb. Taking the simplest case of complete ionization of all electrons, for a nuclide X of atomic number Z, A r ( X ) = A r...
    10 KB (1,494 words) - 23:52, 26 May 2025
  • molecules. She transferred her speciality to chemistry, and worked on Penning ionization. During her graduate degree, she started to work with IBM in San Jose...
    8 KB (743 words) - 03:53, 27 May 2025
  • Thumbnail for Gas-filled tube
    xenon, the discharge ionizes xenon directly due to most energy of the electrons being spent on direct ionization of xenon. Penning mixtures are used where...
    27 KB (3,363 words) - 16:51, 1 March 2025
  • Thumbnail for Miniature mass spectrometer
    atmospheric pressure ionization sources, including ESI, atmospheric pressure chemical ionization (APCI), and various ambient ionization sources. The ions...
    26 KB (3,441 words) - 14:30, 9 November 2024
  • Thumbnail for Ion beam deposition
    evaporated solid, or a solution (liquid) are ionized. For atomic IBD, electron ionization, field ionization (Penning ion source) or cathodic arc sources are...
    6 KB (686 words) - 23:48, 27 May 2025
  • Thumbnail for Cloud chamber
    through the gas they leave ionization trails. The alcohol vapor condenses around gaseous ion trails left behind by the ionizing particles. This occurs because...
    15 KB (1,717 words) - 19:40, 26 April 2025
  • Thumbnail for Reionization
    that star.) At some point the shell of ionization from each star in a galaxy begin to overlap and the ionization frontier pushes out into the intergalatic...
    52 KB (6,027 words) - 18:04, 10 April 2025
  • Thumbnail for Sodium-vapor lamp
    containing solid sodium and a small amount of neon and argon gas in a Penning mixture to start the gas discharge. The discharge tube may be linear (SLI...
    29 KB (3,231 words) - 14:49, 27 May 2025
  • Thumbnail for AEgIS experiment
    (AEgIS Collaboration) (July 2020). "Rydberg-positronium velocity and self-ionization studies in a 1T magnetic field and cryogenic environment". Physical Review...
    10 KB (922 words) - 08:27, 20 May 2025