primary electron वाक्य
उदाहरण वाक्य
मोबाइल
- Racker also identified NADPH as the primary electron donor for the enzyme.
- Also seen is the electron gun which generates the primary electron beam.
- However, these primary electrons carry far too much energy to directly excite electrons.
- The coefficient gives the number of secondary electrons produced by primary electron per unit path length.
- Ewald's sphere construction for the case of normal incidence of the primary electron beam.
- In the middle one can see the bright spot of the electron gun which generates the primary electron beam.
- During waveform acquisition mode, the primary electron beam is focused on a single point on the device surface.
- The Wehnelt bias voltage creates a repulsive electrostatic field that condenses the cloud of primary electrons produced by the filament.
- Tungsten filaments are the primary electron source for the electron gun of most RHEED systems due to the low work function of tungsten.
- This group of primary electrons is electrostatically accelerated and focused by an electrical potential so that they strike the first dynode of the tube.
- The primary electrons from the cathode have a higher kinetic energy, so they can still pass through the suppressor grid and reach the anode.
- This is due to the usage in the photoelectric effect of all the electrons excited ( sufficiently ) by the primary electrons of I _ 1.
- When photosystem II absorbs light, electrons in the reaction-center chlorophyll are excited to a higher energy level and are trapped by the primary electron acceptors.
- The intensity of the primary electrons, I _ 0, is damped as a function of the distance, " d ", into the solid.
- They did not find them, but in 1960, James Earl, who joined the Minnesota group in 1958, used similar apparatus to discover a small primary electron component.
- Instead, the inelastic scattering of the primary electrons in the crystal leads to the emission of secondary electrons, Auger electrons and X-rays, which in turn can scatter as well.
- Primary electron energies in SEMs or STEMs are usually between 10 and 300 keV, where reactions induced by electron impact, i . e . precursor dissociation, have a relatively low cross section.
- Low-voltage SEM is typically conducted in an FEG-SEM because field emission guns ( FEG ) are capable of producing high primary electron brightness and small spot size even at low accelerating potentials.
- Although cytochrome b559 is a redox-active protein, it is unlikely to be involved in the primary electron transport in PSII due to its very slow photo-oxidation and photo-reduction kinetics.
- While the fine pattern definition is due principally to secondaries from Auger electrons with a short path length, the primary electrons will sensitize the resist over a larger region than the X-ray exposure.
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