A device in which the collected electrical charge from ionization in a gas-filled cavity is taken to be the proportion to some parameter (e.g. dose or exposure) of radiation field (spase)
A device in which the collected electricalcharge from ionization in a gas-filled cavity is taken to be the proportionto some parameter (e.g. dose or exposure) of radiation field
In situ measurements of the relative flux ordensity of electrically charged particles in the space environment. May givesimple fluxes, but full distribution functions are sometimes measured.
In situ measurements of the relative flux or density of
electrically charged particles in the space environment.
May give simple fluxes, but full distribution functions are
sometimes measured.
A device which measures the current produced by the displacement of ambient ions on a grid, thereby allowing the determination of the ion trajectory and velocity. (spase)
A device which measures the current produced by the displacement of ambient ions on a grid, thereby allowing the determination of the ion trajectory and velocity. (spase)
A device which measures the current producedby the displacement of ambient ions on a grid, thereby allowing thedetermination of the ion trajectory and velocity.
A device which measures low-pressure orvacuum neutral gas with pressures ranging from 10e-3 Torr to 10e?10 Torr. Anion gauge is an electronic amplifying vacuum tube consisting of threeelectrodes insid
e an evacuated glass envelope, with the filament being thecathode.
the process by which the energy of UV or X-Ray photon is absorbed by the electron of an atom, removing it completely from the atom and leaving a positively charged ion behind.
Ionization is the physical process of converting an atom or molecule into an ion by changing the difference between the number of protons and electrons. This process works slightly differently dependi
ng on whether an ion with a positive or a negative electric charge is being produced. A positive electric charge is produced when an electron bond to an atom or molecule absorbs enough energy from an external source to escape from the electric potential barrier that originally confined it, where the amount of energy required is called the Ionization potential. A negative electric charge is produced when a free electron collides with an atom and is subsequently caught inside the electric potential barrier, releasing any excess energy.
The process by which ions are produced, typically occurring by interaction with electromagnetic radiation ('photoionization'), or by collisions with atoms or electrons ('collisional ionization').
The process by which ions are produced, typically occurring by interaction with electromagnetic radiation ('photoionization'), or by collisions with atoms or electrons ('collisional ionization').