However, for aperiodic systems in which the potential will vary rapidly along the beam direction, the slice thickness has to be significantly small and hence will result in higher computational expense.
12.
If two drift chambers are used with the wires of one orthogonal to the wires of the other, both orthogonal to the beam direction, a more precise detection of the position is obtained.
13.
The figure at left shows the Kikuchi lines leading to a silicon [ 100 ] zone, taken with the beam direction approximately 7.9?away from the zone along the ( 004 ) Kikuchi band.
14.
In 2014 VIL-1 was upgraded to use SARAS ( Spanish acronym for " Fast Acquisition of Satellites and Launchers " ) system allowing easier estimation of the beam direction increasing tracking precision and accuracy.
15.
Most helium atom scattering studies will scan the detector in a plane defined by the incoming atomic beam direction and the surface normal, reducing the Ewald sphere to a circle of radius R = "'k 0 "'intersecting only reciprocal lattice rods that lie in the scattering plane as shown here:
16.
However, it is still listed as a shortwave station, and can clearly be heard in the DRM mode on 6155 kHz between 15 : 00 UTC and 17 : 00 UTC on weekdays . This is despite it only apparently radiating 15 kW, and the fact that the UK is around 1700 km away from the transmitter and 50-60 degrees off the advertised beam direction.
17.
The satellite then fires a laser beam, the beams direction is defined by the parameters " a " and " b " . " a " is the vertical beam angle, the angle between the beam and equatorial plane, when the beam is projected onto the vertical plane ( which is defined as containing the satellite and the axis of rotation of the body ).
