pencil beam


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Related to pencil beam: Pencil Beam Antenna

pencil beam

See antenna.

pencil beam

[′pen·səl ‚bēm]
(electromagnetism)
A beam of radiant energy concentrated in an approximately conical or cylindrical portion of space of relatively small diameter; this type of beam is used for many revolving navigational lights and radar beams.

pencil beam

An electronic beam that is narrow, has minimal side lobes, and is strongly directional.
References in periodicals archive ?
MEVION S250 Proton Therapy System, offering highly stable, next-generation volumetric delivery capabilities - MEVION S250i Proton Therapy System with HYPERSCAN with Adaptive Aperture, overcoming pencil beam scanning uncertainties by delivering robust IMPT treatment at hyper-speed - MEVION S250mx, making proton therapy fully scalable, with two, three and four room designs that are inherently redundant and support 100% facility uptime
Obviously, in the case of a uniform neutron field this distribution is also uniform, but in the case of a pencil beam the nuclei density is highest at the beam entrance, Fig.
In this paper, a new algorithm denoted as modified invasive weeds optimization (MIWO) is introduced for the synthesis of both cosecant array pattern and pencil beam pattern of linear array.
This scanner employed an x-ray tube potential of 100 kV and one can see registration of individual tracks from the rastered pencil beam of x rays from a single-sided scan.
For comparison, we also studied the amplified performance of double-ridge FWG-TWT with a pencil beam at 140 GHz.
The desired pencil beam pattern function can be expressed as
Pinchera, "A generalized hybrid approach for the synthesis of uniform amplitude pencil beam ring-arrays," IEEE Transactions on Antennas and Propagation, Vol.
It's largely accepted among physicians, and the technology continues to improve, such as with the advancement of pencil beam, or spot scanning, proton therapy.
The received order for the Proton Therapy System is equipped with two sets of Rotational Gantry Systems that have attained significant achievements at the National Cancer Centre Hospital East Japan, and enables selection of either the Pencil Beam Scanning Irradiation, the latest irradiation technology using the characteristics of the proton beam, or the existing irradiation (the Wobbler type) depending on the shape of the target cancer.
We were first to report seeing a pencil beam of a laser, which is now synonymous with `laser.
The satellite contains eight bands of the OCM to study ocean biology, Ku band pencil beam, Scatterometer to measure sea surface wind vectors and radio occultation sounder for atmosphere.