1. Monte Carlo simulation of a pencil beam incident on a semi-infinite scattering medium. 2. Bone scan densitometry uses a fan scan system that replaces a pencil beam system. 3. Photon pencil beam scans are defined as crossing of two beams to a fine point. 4. It breaks the radiation into thousands of pencil beams . 5. Ionizing radiation photons or x-rays ( IMRT ) use pencil beam scanning to precisely target a tumor. 6. When the voltages of the two arms were multiplied a pencil beam was formed, but with rather high sidelobes. 7. A 4D radar with a pencil beam will produce radial Doppler velocity in addition to bearing, elevation, and slant range. 8. Oceansat-2 will carry two payloads for ocean related studies, namely, Ocean Colour Monitor ( OCM ) and Ku-band Pencil Beam Scatterometer. 9. Radiation treatment planning has pencil beam scanning as one of its modalities . mean free path is involved in IMRT planning. 10. The system is a low power, long range ( 200-250 nautical miles ), L-band pencil beam , solid-state transmitter and beacon interrogator search radar.