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Języki publikacji
Abstrakty
The plasma focus is a source of pulsed radiation, which is of interest in various fields of physics and technology. Applications include soft X-ray microscopy, soft X-ray and electron beam lithography. The plasma focus is also a highly efficient source of fast neutrons. If one applies gas puffing instead of static filling, decoupling of plasma conditions in the breakdown and compression phases can be achieved. Results of experiments with a fast valve and accompanying 2D modelling of the dynamic gas target are presented. Among other advantages of gas puffing, neutron yield could be increased up to a factor of three in appropriate experiments. The concept of gas puffing has been extensively investigated in many Z-pinch experiments including multiple gas puffs. It seems desirable to increase the efforts to understand and optimise the gas puffing option for small and large plasma focus devices.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
15--19
Opis fizyczny
Bibliogr. 21 poz., rys.
Twórcy
autor
- Institut für Plasmaforschung, Universität Stuttgart, Pfaffenwaldring 31, 70569 Stuttgart, Germany, Tel.: 0049-7032/ 22156, Fax: 0049-7032/ 508362, schmidt@ipf.uni-stuttgart.de or Hellmut.Schmidt@epost.de
Bibliografia
- 1. Aguillon JC, Holstein PA, Rouillard R (1973) Fonctionnement de focus atmosphere inhomogene. Phys Lett A 45:149–150
- 2. Burkhalter PG, Shiloh J, Fisher A, Cowan RD (1979) X-ray spectra from a gas-puff Z-pinch device. J Appl Phys 50: 4532–4540
- 3. Deeney C, LePell PD, Cochran FL, Coulter MC, Whitney KG, Davis J (1993) Argon gas puff implosion experiments and twodimensional modelling. Phys Fluids B 5:992–1001
- 4. Felber FS, Wessel FJ, Wild NC et al. (1988) Ultrahigh magnetic fields produced in a gas-puff Z-pinch. J Appl Phys 64:3831–3844
- 5. Gerasimov BP, Semushin SA (1992) Computer simulation of two and three dimensional gas dynamics in engineering. In: Samarskii AA, Sapagovas MP (eds) Mathematical modelling and applied mathematics. Elsevier Science Publishers BV, North Holland, pp 195–200
- 6. Glazyrin IV, Diyankov OV, Karlykhanov NG, Koshelev SV, Krasnogorov IV, Slesareva AN, Timakova MS (1998) Stability of plasma liner implosion. Report Russian Federal Nuclear Centre VNIITF, Moscow
- 7. Hammer JH, Tabak M, Wilks SC et al. (1999) High yield inertial confinement fusion target design for a Z-pinch-driven hohlraum. Phys Plasmas 6:2129–2136
- 8. Jäger U, Herold H (1987) Fast ion kinetics and fusion reaction mechanism in the plasma focus. Nucl Fusion 27:407–423
- 9. Liberman MA, DeGroot JS, Toor A, Spielman RB (1999) Physics of high-density Z-pinch plasmas. Springer, New York
- 10. Matzen MK (1997) Z-pinches as intense X-ray sources for high energy density physics applications. Phys Plasmas 4:1519–1527
- 11. Peterson DL, Bowers RL, Brownell JH et al. (1996) Two-dimensional modelling of magnetically driven Rayleigh-Taylor instabilities in cylindrical pinches. Phys Plasmas 3:368–381
- 12. Ryutov D, Drake RP, Kane J, Liang E, Remington BA, WoodVasey WM (1999) Similarity criteria for the laboratory simulation of supernova hydrodynamics. Astrophys J 518:821–834
- 13. Schmidt H (2000) Neutron yield optimization of plasma focus devices. J Tech Phys, Special issue 41;2:93–108
- 14. Schmidt H, Jakubowski L, Sadowski M, Skladnik-Sadowska E, Stanislawski J (1994) Gas-puff target experiments with the POSEIDON plasma focus facility. Plasma Phys Contr Fusion 36:13–24
- 15. Schmidt H, Sadowski M, Jakubowski L, Skladnik-Sadowska E, Stanislawski J, Szydlowski A (1997) Influence of gas-puffed targets on dynamics and emission characteristics of neutrons and X-rays within the POSEIDON plasma focus. J Tech Phys 38:121–140
- 16. Shishlov AV, Baksht RB, Fedunin AV et al. (2000) Long time implosion experiments with double gas puffs. Phys Plasmas 7:1252–1262
- 17. Song Y, Coleman P, Failor BH et al. (2000) Valve and nozzle design for injecting a shell-on-shell gas puff load into a Z-pinch. Rev Sci Instrum 71:3080–3084
- 18. Sze H, Coleman PL, Failor BH et al. (2000) Initial results for an argon Z-pinch using a double-shell gas puff. Phys Plasmas 7: 4223–4226
- 19. Thornhill JW, Whitney KG, Deeney C, LePell PD(1994) Phenomenological modelling of turbulence in Z-pinch implosions. Phys Plasmas 1:321–330
- 20. Velikovich AL, Dahlburg JP, Schmitt AJ et al. (2000) RichtmyerMeshkov-like instabilities and early-time perturbation growth in laser targets and Z-pinch loads. Phys Plasmas 7:1662–1671
- 21. Yangidaira T, Shimoda K, Ono Y, Hirano K (1999) Soft X-ray emission in the neon gas puff plasma focus. Phys Plasmas 6:4679–4684
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BUJ6-0006-0080