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The lens coupling efficiency in megavoltage imaging
Medical Physics, 1991In TV‐based megavoltage imaging systems it is useful to be able to estimate the geometrical efficiency g2 of the camera lens. It is shown that the appropriate expression is g2=(16n2)−1 ×[F(1+1/m)]−2, where n is the refractive index of the scintillator, F is the F‐number of the lens and m is the optical magnification.
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Efficiency of local light-plasmon coupling
Applied Physics Letters, 2003We investigate quantitatively the local coupling efficiency of a strongly focused laser beam to surface plasmon polaritons on a gold thin film. The coupling is mediated by gold ridges with nanoscale cross section. The coupling efficiency is determined by measuring the leakage radiation emitted by the surface plasmon polaritons into the glass substrate ...
H. Ditlbacher +4 more
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Efficient optical coupling to Bloch waves
Technical Digest. Summaries of papers presented at the Quantum Electronics and Laser Science Conference. Postconference Technical Digest (IEEE Cat. No.01CH37172), 2001Summary form only given. Highly non-linear dispersion of Bloch waves which may be designed into photonic crystals (PCs) has potential application in optical signal processing, laser beam steering, and WDM filtering. However, due to the large mismatch between the group velocity in a PC material and an isotropic material it is difficult to couple light ...
P. Rabiei, A.F.J. Levi
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Efficient Explicitly Correlated Coupled-Cluster Approximations
2010Explicitly correlated MP2-F12 and CCSD(T)-F12 methods are reviewed. We focus on the CCSD(T)-F12x (x = a,b) approximations, which are only slightly more expensive than their non-F12 counterparts. Furthermore, local approximations in the LMP2-F12 and LCCSD-F12 methods are described, which make it possible to treat larger molecules than with standard ...
Hans-Joachim Werner +3 more
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EFFICIENT COUPLING OF ITERATIVE MODELS
Use of High Performance Computing in Meteorology, 2007Ford, R W, Riley, G D, Armstrong, C W
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Efficient intramolecular monophenol oxidative coupling
The Journal of Organic Chemistry, 1976S. Morris Kupchan +2 more
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