Primary Beam

Some articles on primary beam, beam, primary:

Projectional Radiography - Imaging Principles - X-ray Attenuation
... When the primary beam passes through the body, some of the radiation is absorbed in a process known as attenuation ... What remains of the primary beam after attenuation is known as the remnant beam ... The remnant beam is responsible for exposing the image receptor ...
Proximity Effect (electron Beam Lithography)
... The proximity effect in electron beam lithography (EBL) is the phenomenon that the exposure dose distribution, and hence the developed pattern, is wider than the scanned pattern, due to the interactions of the ... interactions which deflect the primary electrons by a typically small angle, thus statistically broadening the beam in the resist (and further in the substrate) ... two-gaussian model where a perfect point-like electron beam is broadened to a superposition of a gaussian with a width of a few nanometers to order 10's of ...
Focused Ion Beam - Principle
... Focused ion beam (FIB) systems have been produced commercially for approximately twenty years, primarily for large semiconductor manufacturers ... fashion to a scanning electron microscope (SEM) except, rather than a beam of electrons and as the name implies, FIB systems use a finely focused beam of ions (usually ... As the diagram on the right shows, the gallium (Ga+) primary ion beam hits the sample surface and sputters a small amount of material, which leaves the surface as either secondary ions ...

Famous quotes containing the words beam and/or primary:

    Why beholdest thou the mote that is in thy brother’s eye, but considerest not the beam that is in thine own eye?
    Bible: New Testament Jesus, in Matthew, 7:3.

    From the Sermon on the Mount.

    Parental attitudes have greater correlation with pupil achievement than material home circumstances or variations in school and classroom organization, instructional materials, and particular teaching practices.
    —Children and Their Primary Schools, vol. 1, ch. 3, Central Advisory Council for Education, London (1967)