| toroidal flux | <radiobiology> Magnetic field flux in the toroidal direction. See: magnetic fields. (09 Oct 1997) |
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| advanced toroidal facility | <physics> A large stellarator device developed at Oak Ridge National Lab (ORNL), but now retired. Acronym: ATF (09 Oct 1997) |
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| toroidal | <radiobiology> In the shape of a torus, or doughnut. Or: Coordinate indicating which part of the torus a particle is in. (Azimuthal coordinate, toroidal angle, etc.) Or: General term referring to toruses as opposed to other geometries. (for example, tokamaks and stellarators are examples of toroidal devices.) (09 Oct 1997) |
| toroidal beta | <radiobiology> Plasma beta using the toroidal magnetic field, i.e. Plasma pressure divided by toroidal field pressure. See: beta. (09 Oct 1997) |
| toroidal current | <radiobiology> Current flowing in the toroidal direction (the long way) around a torus. (As distinct from poloidal currents flowing through the centre of the torus and around to the outside, the short way.) (09 Oct 1997) |
| toroidal divertor | <radiobiology> Divertor created by extracting toroidal field field lines at some point, forming an external loop outside the torus. Has the disadvantages that it breaks the axial symmetry of the torus, which converts a relatively simple, mostly 2-dimensional geometry to a comples 3-dimensional geometry. For an illustration refer to page 135 of Gross (reference 4). (09 Oct 1997) |
| toroidal field coils | <radiobiology> Coils in a toroidal system, typically wound around the torus in a solenoid-like arrangement, used to generate the toroidal magnetic field. Each turn completely surrounds the plasma. (09 Oct 1997) |
| toroidal magnetic cusps | A hybrid confinement scheme operating at high beta. A region of closed toroidal magnetic flux with high-beta plasma is separated by a narrow sheath from the surrounding field, which contains externally produced poloidal components arranged in a toroidal line-cusp configuration. Plasma migrating to the outer sheath is temporarily mirror-confined before being removed in a divertor system. (09 Oct 1997) |
| bloody flux | The dysentery, a disease in which the flux or discharge from the bowels has a mixture of blood. Source: Websters Dictionary (01 Mar 1998) |
| net flux | The difference between the two unidirectional flux's. (05 Mar 2000) |
| integrated neutron flux | <radiobiology> Sum (integral) of the neutron flux (neutrons per unit time per unit area, see flux) over all time, total number of neutrons which passed through a unit area. Important figure-of-merit in testing effects of neutron radiation on materials, and in assessing how long such materials can survive exposure to neutron sources (such as fission reactor cores and D-T fusion plasmas). (09 Oct 1997) |
| either particle flux density | The particle fluence rate, or energy flux density, the energy fluence rate of intensity. Compare: fluence. (05 Mar 2000) |
| unidirectional flux | The flux of a substance from one surface of a boundary layer or membrane to the other, disregarding any counterbalancing flux in the other direction, as measured by tracer technique. (05 Mar 2000) |
| flux | <radiobiology> The total amount of a quantity passing through a given surface per unit time. Typical quantities include (magnetic) field lines, particles, heat, energy, mass of fluid, etc. Common usage in plasma physics is for flux by itself to mean magnetic field flux, unless specified otherwise. (09 Oct 1997) |
| flux density | <radiobiology> Total amount of a quantity passing through a unit surface area in unit time See: flux. (09 Oct 1997) |
| flux, light | <microscopy> Sometimes called luminous flux, the visible portion of the radiant energy emitted by a light source. It is measured in lumens per solid angle. In electrical engineering, it is analogous to the lines of force in a magnetic field, spoken of as magnetic flux. (05 Aug 1998) |