The TOF analysis requires the beam to be pulsed through the mechanical chopper, producing collimated beam'packets'that have a'time-of-flight'( TOF ) to travel from the chopper to the detector.
22.
For instance, a plano-convex lens, which is used to focus a collimated beam, produces a sharper focal spot when used with the convex side towards the beam source.
23.
The integrals of spectral radiance ( or specific intensity ) with respect to solid angle, used above, are singular for exactly collimated beams, or may be viewed as Dirac delta functions.
24.
Most important among them is a collimated or focused light beam ( usually from a laser source producing a collimated beam of monochromatic light ) that illuminates a region of the sample.
25.
This is the size, in the imaging plane, of smallest object that the lens can resolve, and also the radius of the smallest spot to which a collimated beam of light can be focused.
26.
For comparison, in the parabolic type of antenna a feedhorn at the end of a waveguide directs a conical beam of output energy toward the reflector, whence it is focused into a narrow collimated beam.
27.
The integrals of specific ( radiative ) intensity with respect to solid angle, used for the definition of spectral flux density, are singular for exactly collimated beams, or may be viewed as Dirac delta functions.
28.
A collimated beam of light from a light source ( ASTM D1003-Illuminant C, BS EN ISO 13468 Parts 1 and 2-Illuminant D65 ) passes through a sample mounted on the entrance port of an integrating sphere.
29.
In operation, the gun cathode is the source of thermally-emitted electrons that are both accelerated and shaped into a collimated beam by the electrostatic field geometry established by the gun electrode ( grid and anode ) configuration used.
30.
For the present purposes, the light from a star can be treated as a practically collimated beam, but apart from this, a collimated beam is rarely if ever found in nature, though artificially produced beams can be very nearly collimated.
