The fusion related dense Z-pinch programme at Imperial College
Creators
- 1. Imperial Coll. of Science and Technology, London (UK). Blackett Lab.
Description
A universal stability diagram for the Z-pinch has been found in which 1n (I4a) is the ordinate and 1n N is the abscissa, where I is the current, a is the radius and N is the line density. Straight lines represent the critical Lundquist number for stability; the onset of viscous damping and pressure anisotropy; values of the ratio ai/a (the measure of finite ion Larmor radius effects); and Ωiτi=1. The experimental results are interpreted in terms of their loci in this diagram. The compression pinch shows a weak m=0 structure for aia=0.18 and Ωiτi=7. A carbon fibre Z-pinch goes violently unstable after 20 ns when Ωiτi is less than one. The theory for both m=0 and m=1 resistive stability of an ohmically heated equilibrium shows a critical Lundquist number of about 102 below which the pinch is stable. Pressure equilibria can evolve through self-similar current profiles that can be centrally peaked and in the outer region possess a profile increasing with radius. Theoretical stability results in the high I4a regime have been developed for low N (Vlasov model with skin currents) and high N (CGL anisotropic regime). The DZP project is now being designed and the generator assembled to yield up to 2 MA at 2.4 MV for 200 ns. Not only fusion conditions will be studied, but also radiative collapse at a current I above the Pease-Braginskii limiting current. Collapse to over 104 times the solid density is predicted in a 1-D simulation that includes degeneracy and radiation transport effects. (author). 22 refs, 18 figs, 1 tab
Additional details
Publishing Information
- Publisher
- IAEA.
- Imprint Place
- Vienna (Austria)
- ISBN
- 92-0-130191-X
- Imprint Title
- Plasma physics and controlled nuclear fusion research 1990. V. 2
- Imprint Pagination
- 809 p.
- Journal Issue
- Suppl. 1991
- Journal Series
- Nucl. Fusion.
- Journal Page Range
- p. 769-792.
Conference
- Title
- 13. international conference on plasma physics and controlled nuclear fusion research.
- Dates
- 1-6 Oct 1990.
- Place
- Washington, DC (USA).
INIS
- Country of Publication
- Austria
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 22082122
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY; S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Resource subtype / Literary indicator
- Conference, Numerical Data
- Quality check status
- Yes
- Descriptors DEI
- ANISOTROPY; BOLTZMANN-VLASOV EQUATION; CHARGED-PARTICLE TRANSPORT; COMPUTERIZED SIMULATION; ELECTRIC CURRENTS; EXPERIMENTAL DATA; JOULE HEATING; LARMOR RADIUS; LINEAR Z PINCH DEVICES; MHD EQUILIBRIUM; OHM LAW; PLASMA CONFINEMENT; PLASMA DIAGNOSTICS; PLASMA MACROINSTABILITIES; PLASMA PRESSURE; PLASMA RADIAL PROFILES; THEORETICAL DATA; TIME DEPENDENCE; X-RAY EMISSION ANALYSIS;
- Descriptors DEC
- CHEMICAL ANALYSIS; CONFINEMENT; CURRENTS; DATA; DIFFERENTIAL EQUATIONS; EQUATIONS; EQUILIBRIUM; HEATING; INFORMATION; INSTABILITY; LINEAR PINCH DEVICES; NONDESTRUCTIVE ANALYSIS; NUMERICAL DATA; OPEN PLASMA DEVICES; PARTIAL DIFFERENTIAL EQUATIONS; PINCH DEVICES; PLASMA INSTABILITY; RADIATION TRANSPORT; SIMULATION; THERMONUCLEAR DEVICES;
Optional Information
- Lead record
- 52s21-0xq96
- Secondary number(s)
- IAEA-CN--53/C-IV-19.