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- Coulomb_explosion abstract "A Coulomb explosion is a mechanism for coupling electronic excitation energy from intense electromagnetic fields into atomic motion. The Coulombic repulsion of particles having the same electric charge can break the bonds that hold solids together. When done with a narrow laser beam, a small amount of solid explodes into a plasma of ionized atomic particles.With their low mass, outer valence electrons responsible for chemical bonding are easily stripped from atoms, leaving them positively charged. Given a mutually repulsive state between atoms whose chemical bonds are broken, the material explodes into a small plasma cloud of energetic ions with higher velocities than seen in thermal emission.A Coulomb explosion is one particular mechanism that permits laser-based machining.Coulomb explosions for industrial machining are made with brief (picosecond or high femtoseconds) laser pulses. The enormous beam intensities required (10–400 terawatt per square centimeter thresholds, depending on material) are only practical to generate, shape, and deliver for very brief instants of time.A Coulomb explosion is a \"cold\" alternative to the dominant laser etching technique of thermal ablation, which depends on local heating, melting, and vaporization of molecules and atoms using less-intense beams. Pulse brevity down only to the nanosecond regime is sufficient to localize thermal ablation – before the heat is conducted far, the energy input (pulse) has ended. Nevertheless, thermally ablated materials may seal pores important in catalysis or battery operation, and recrystallize or even burn the substrate, thus changing the physical and chemical properties at the etch site. In contrast, even light foams remain unsealed after ablation by Coulomb explosion.Coulomb explosion etching can be used in any material to bore holes, remove surface layers, and texture and microstructure surfaces; e.g., to control ink loading in printing presses.High speed camera imaging of alkali metals exploding in water has suggested the explosion is a coulomb explosion.".
- Coulomb_explosion thumbnail Bucky1.gif?width=300.
- Coulomb_explosion wikiPageID "1248251".
- Coulomb_explosion wikiPageLength "3830".
- Coulomb_explosion wikiPageOutDegree "18".
- Coulomb_explosion wikiPageRevisionID "656641147".
- Coulomb_explosion wikiPageWikiLink Ablation.
- Coulomb_explosion wikiPageWikiLink Alkali_metal.
- Coulomb_explosion wikiPageWikiLink Category:Laser_applications.
- Coulomb_explosion wikiPageWikiLink Category:Materials_science.
- Coulomb_explosion wikiPageWikiLink Category:Mechanisms_(engineering).
- Coulomb_explosion wikiPageWikiLink Chemical_bond.
- Coulomb_explosion wikiPageWikiLink Electric_charge.
- Coulomb_explosion wikiPageWikiLink Electrostatics.
- Coulomb_explosion wikiPageWikiLink Ion.
- Coulomb_explosion wikiPageWikiLink Laser_ablation.
- Coulomb_explosion wikiPageWikiLink Laser_cutting.
- Coulomb_explosion wikiPageWikiLink Laser_engraving.
- Coulomb_explosion wikiPageWikiLink List_of_plasma_(physics)_articles.
- Coulomb_explosion wikiPageWikiLink Plasma_(physics).
- Coulomb_explosion wikiPageWikiLink Repulsive_state.
- Coulomb_explosion wikiPageWikiLink Tunnel_ionization.
- Coulomb_explosion wikiPageWikiLink Valence_electron.
- Coulomb_explosion wikiPageWikiLink File:Bucky1.gif.
- Coulomb_explosion wikiPageWikiLinkText "Coulomb explosion".
- Coulomb_explosion wikiPageUsesTemplate Template:Citation_needed.
- Coulomb_explosion wikiPageUsesTemplate Template:Reflist.
- Coulomb_explosion subject Category:Laser_applications.
- Coulomb_explosion subject Category:Materials_science.
- Coulomb_explosion subject Category:Mechanisms_(engineering).
- Coulomb_explosion hypernym Mechanism.
- Coulomb_explosion type Organisation.
- Coulomb_explosion type Application.
- Coulomb_explosion type Laser.
- Coulomb_explosion type Machine.
- Coulomb_explosion comment "A Coulomb explosion is a mechanism for coupling electronic excitation energy from intense electromagnetic fields into atomic motion. The Coulombic repulsion of particles having the same electric charge can break the bonds that hold solids together.".
- Coulomb_explosion label "Coulomb explosion".
- Coulomb_explosion sameAs Q1136969.
- Coulomb_explosion sameAs Coulomb-Explosion.
- Coulomb_explosion sameAs Esplosione_coulombiana.
- Coulomb_explosion sameAs m.09gf04n.
- Coulomb_explosion sameAs Q1136969.
- Coulomb_explosion sameAs 库仑爆炸.
- Coulomb_explosion wasDerivedFrom Coulomb_explosion?oldid=656641147.
- Coulomb_explosion depiction Bucky1.gif.
- Coulomb_explosion isPrimaryTopicOf Coulomb_explosion.