Back قرصة بلازما Arabic পিঞ্চ ক্রিয়া Bengali/Bangla Confinament per pinçament Catalan Pinch-effekt (elektrodynamik) Danish Pinch-Effekt (Elektrodynamik) German Պինչ էֆեկտ Armenian Effetto pinch Italian 핀치 (물리학) Korean Pincheffekt NN Skurcz plazmy Polish

Pinch (plasma physics)

For other uses, see Pinch (disambiguation).
Pinch phenomena
Lightning discharge bolts showing electromagnetically pinched plasma filaments
A 1905 study of pinches, where electric lightning was used to create a Z-pinch inside a metal tube.[1]
A current-driven toroidal Z-pinch in a krypton plasma

A pinch (or: Bennett pinch[2] (after Willard Harrison Bennett), electromagnetic pinch,[3] magnetic pinch,[4] pinch effect,[5] or plasma pinch.[6]) is the compression of an electrically conducting filament by magnetic forces, or a device that does such. The conductor is usually a plasma, but could also be a solid or liquid metal. Pinches were the first type of device used for experiments in controlled nuclear fusion power.[7]

Pinches occur naturally in electrical discharges such as lightning bolts,[8] planetary auroras,[9] current sheets,[10] and solar flares.[11]

  1. ^ Cite error: The named reference pollock was invoked but never defined (see the help page).
  2. ^ Buneman, O. (1961). "The Bennett Pinch". In Drummond, James E. (ed.). Plasma Physics. New York: McGraw-Hill. p. 202. Bibcode:1961plph.conf..202B. LOC 60-12766.
  3. ^ Lee, S. (1983). "Energy balance and the radius of electromagnetically pinched plasma columns". Plasma Physics. 25 (5): 571–576. Bibcode:1983PlPh...25..571L. doi:10.1088/0032-1028/25/5/009.
  4. ^ Schmidt, Helmut (1966). "Formation of a Magnetic Pinch in InSb and the Possibility of Population Inversion in the Pinch". Physical Review. 149 (2): 564–573. Bibcode:1966PhRv..149..564S. doi:10.1103/physrev.149.564.
  5. ^ Severnyi, A. B. (1959). "On the Appearance of Cosmics Rays in the Pinch Effect in Solar Flares". Soviet Astronomy. 3: 887. Bibcode:1959SvA.....3..887S.
  6. ^ Zueva, N. M.; Solov'ev, L. S.; Morozov, A. I. (1976). "Nonlinear instability of plasma pinches". Journal of Experimental and Theoretical Physics Letters. 23: 256. Bibcode:1976JETPL..23..256Z.
  7. ^ Phillips, James (Winter 1983). "Magnetic Fusion". Los Alamos Science. pp. 64–67.
  8. ^ Rai, J.; Singh, A. K.; Saha, S. K (1973). "Magnetic field within the return stroke channel of lightning". Indian Journal of Radio and Space Physics. 2: 240–242. Bibcode:1973IJRSP...2..240R.
  9. ^ Galperin, Iu. I.; Zelenyi, L. M.; Kuznetsova, M. M. (1986). "Pinching of field-aligned currents as a possible mechanism for the formation of raylike auroral forms". Kosmicheskie Issledovaniia. 24: 865–874. Bibcode:1986KosIs..24..865G.
  10. ^ Syrovatskii, S. I. (1981). "Pinch sheets and reconnection in astrophysics". Annual Review of Astronomy and Astrophysics. 19: 163–229. Bibcode:1981ARA&A..19..163S. doi:10.1146/annurev.aa.19.090181.001115.
  11. ^ Airapetyan, V. S.; Vikhrev, V. V.; Ivanov, V. V.; Rozanova, G. A. (1990). "Pinch Mechanism of Energy Release of Stellar Flares". Astrophysics. 32 (3): 230–235. Bibcode:1990Ap.....32..230A. doi:10.1007/bf01005504. S2CID 120883355.

Developed by StudentB