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Page "Gamma spectroscopy" ¶ 37
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Electrons and conduction
Electrons excited to the conduction band also leave behind electron holes, i. e. unoccupied states in the valence band.
Electrons at these states can be easily excited to the conduction band, becoming free electrons, at room temperature.
Electrons within the conduction band are mobile charge carriers in solids, responsible for conduction of electric currents in metals and other good electrical conductors.
Electrons in the conduction band may move freely throughout the material in the presence of an electrical field.
Electrons can gain enough energy to jump to the conduction band by absorbing either a phonon ( heat ) or a photon ( light ).

Electrons and band
Electrons can take on any energy within an unfilled band.
Electrons are able to jump from one band to another.
Electrons can transfer from one band to the other by means of carrier generation and recombination processes.
Electrons are delocalized along the conjugated backbones of conducting polymers, usually through overlap of π-orbitals, resulting in an extended π-system with a filled valence band.

Electrons and can
Electrons that are bound to atoms possess a set of stable energy levels, or orbitals, and can undergo transitions between them by absorbing or emitting photons that match the energy differences between the levels.
Electrons can also be emitted from the electrodes of certain metals when light of frequency greater than the threshold frequency falls on it.
Electrons can absorb energy from photons when irradiated, but they usually follow an " all or nothing " principle.
Electrons can only exist in certain energy levels.
Electrons in atoms and molecules can change ( make transitions in ) energy levels by emitting or absorbing a photon ( of electromagnetic radiation ) whose energy must be exactly equal to the energy difference between the two levels.
Electrons can also be completely removed from a chemical species such as an atom, molecule, or ion.
Electrons can be exchanged between materials on contact ; materials with weakly bound electrons tend to lose them, while materials with sparsely filled outer shells tend to gain them.
* Electrons are fermions, but when they pair up into Cooper pairs they act as bosons, and so can collectively form a coherent state at low temperatures.
Electrons are fermions, and obey the exclusion principle, which means that no two electrons can share a single energy state within an atom ( if spin is ignored ).
Electrons can only reach ( and " illuminate ") a given plate element if both the grid and the plate are at a positive potential with respect to the cathode.
Electrons can move quite freely between energy levels without a high energy cost.
Electrons, within an electron shell around an atom, tend to distribute themselves as far apart from each other, within the given shell, as they can ( due to each one being negatively charged ).
Electrons released on impact escape to the layer of TiO < sub > 2 </ sub > and from there diffuse, through the electrolyte, as the dye can be tuned to the visible spectrum much higher power can be produced.
Electrons can be used in these situations, whereas X-rays cannot, because electrons interact more strongly with atoms than X-rays do.
Electrons also have a long ballistic length at this temperature ; their mean free path can be several micrometres.
Electrons move according to the cross product of the magnetic field and the electron propagation vector, such that, in an infinite uniform field moving electrons take a circular motion at a constant radius dependent upon electron velocity and field strength according to the following equation, which can be derived from circular motion:
Electrons occupying a HOMO of a sigma bond can get excited to the LUMO of that bond.
Electrons and positrons can be discriminated from other charged particles using the emission of transition radiation, X-rays emitted when the particles cross many layers of thin materials.

Electrons and electric
Electrons are the charge carriers in metals and they follow an erratic path, bouncing from atom to atom, but generally drifting in the opposite direction of the electric field.
Electrons are extracted from metal electrodes either by heating the electrode, causing thermionic emission, or by applying a strong electric field and causing field electron emission.
Electrons will be accelerated in the opposite direction to the electric field by the average electric field at their location.
Electrons also conduct electric current through conductive solids, and the thermal and electrical conductivities of most metals have about the same ratio.
Electrons exiting the source cavity are velocity modulated by the electric field as they travel through the drift tube and emerge at the destination chamber in bunches, delivering power to the oscillation in the cavity.
Electrons were ideal for the role, as they are abundant and easily accelerated to high energies due to their electric charge.
# Electrons ( negatively charged ) are knocked loose from their atoms, causing an electric potential difference.

Electrons and field
Electrons are usually generated in an electron microscope by a process known as thermionic emission from a filament, usually tungsten, in the same manner as a light bulb, or alternatively by field electron emission.
Electrons will move to the left side ( uncovering positive ions on the right side ) until they cancel the field inside the metal.
Electrons inside the blob travel at speeds just a tiny fraction below the speed of light and are whipped around by the magnetic field.
Electrons that have a velocity component that is parallel to the magnetic field will rather " stretch out " the circle and form helical paths, the pitch of which is subject to the rotation period and the parallel velocity component.

Electrons and detector
Electrons appear as a track in the inner detector and deposit all their energy in the electromagnetic calorimeter.

Electrons and therefore
Electrons in an s orbital benefit from closer proximity to the positively charged atom nucleus, and are therefore lower in energy.
Electrons are responsible for emission of most EMR because they have low mass, and therefore are easily accelerated by a variety of mechanisms.
Electrons in such orbitals are strongly localized and therefore easily retain their magnetic moments and function as paramagnetic centers.

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