photon beam

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• photon-beam radiation — A type of radiation therapy that reaches deep tumors with high energy x rays made by a machine called a linear accelerator …   English dictionary of cancer terms

• Photon polarization — is the quantum mechanical description of the classical polarized sinusoidal plane electromagnetic wave. Individual photons are completely polarized. Their polarization state can be linear or circular, or it can be elliptical, which is anywhere in …   Wikipedia

• Beam propagation method — (BPM) refers to a computational technique in Electromagnetics, usedto solve the Helmholtz equation under conditions of a time harmonic wave. BPM works under slowly varying envelope approximation, for linear and nonlinear equations.The beam… …   Wikipedia

• Photon — This article is about the elementary particle of light. For other uses, see Photon (disambiguation). Photon Photons emitted in a coherent beam from a laser Composition Elementary particle …   Wikipedia

• Convolution for optical broad-beam responses in scattering media — Photon transport theories, such as the Monte Carlo method, are commonly used to model light propagation in tissue. The responses to a pencil beam incident on a scattering medium are referred to as Green’s functions or impulse responses. Photon… …   Wikipedia

• Radiative transfer equation and diffusion theory for photon transport in biological tissue — Photon transport in biological tissue can be equivalently modeled numerically with Monte Carlo simulations or analytically by the radiative transfer equation (RTE). However, the RTE is difficult to solve without introducing approximations. A… …   Wikipedia

• Photon Factory — The Photon Factory is a synchrotron located at KEK, in Tsukuba, Japan, about fifty kilometres from Tokyo.There are two major facilities, the Photon Factory itself which is a 2.5GeV synchrotron with a beam current of around 350mA, and the PF AR… …   Wikipedia

• beam — Synonyms and related words: AM signal, CRT spot, DM display, Doppler signal, FM signal, H beam, I beam, IF signal, IF video signal, IM display, RF amplifier, RF echoes, RF signal, RF stage, TV band, X ray, abutment, actinic ray, actinism,… …   Moby Thesaurus

• photon — Synonyms and related words: ASA scale, British candle, Hefner candle, Kern, NMR, Scheiner scale, X ray, actinic ray, actinism, alpha particle, antibaryon, antilepton, antimeson, atomerg, atomic beam, atomic nucleus, atomic particle, atomic ray,… …   Moby Thesaurus

• Photon induced electric field poling — In physics, photon induced electric field poling is a phenomenon whereby a pattern of local electric field orientations can be encoded in a suitable ferroelectric material, such as perovskite. The resulting encoded material is conceptually… …   Wikipedia

• Monte Carlo method for photon transport — Modeling photon propagation with Monte Carlo methods is a flexible yet rigorous approach to simulate photon transport. In the method, local rules of photon transport are expressed as probability distributions which describe the step size of… …   Wikipedia