Results 251 to 260 of about 580,139 (299)

Estimating plasma temperatures from transmission spectra

Journal of Quantitative Spectroscopy and Radiative Transfer, 1994
Abstract Recent laser-produced plasma experiments have relied on spectroscopic comparisons with models to infer plasma temperatures. The models use an experimentally determined value for the matter density as input and treat the temperature as an adjustable parameter to obtain a best fit to the experimental absorption spectrum. However, uncertainties
C.A. Iglesias, J.K. Nash, M.H. Chen, F.J. Rogers   +3 more
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Transmission Spectra without Interference Fringes

Applied Spectroscopy, 1977
Rich colors decorating oil slicks on water are interference fringes. These fringes arise from the constructive and destructive interference of the multicomponents of light beams generated from partial reflection of the incident light beam at the first and second surfaces of a transparent sample having plane parallel surfaces. Fringes are reflection (or
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Simplified interpretation of Martian transmission spectra

Journal of Quantitative Spectroscopy and Radiative Transfer, 1968
Abstract A highly simplified procedure for the interpretation of Kuiper's Martian and telluric transmission measurements in the 2 μ region is shown to lead to a Martian surface pressure estimate of about 5 ± 1 mbar.
S.S. Penner, A. Boni
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Fast neutron spectra and transmission measurements

Acta Physica Hungarica, 1986
This article briefly describes a method of evaluating the neutron spectra from measured pulse-height distribution produced by recoil protons in scintillation detector and an algorithm for shielding calculation in subgroup approximation by Monte Carlo method.
D. J. Nikolić, M. J. Milošević, M. P. Pešić   +2 more
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Transmission Spectra of Light to the Mammalian Retina

Photochemistry and Photobiology, 2000
A simple method has been developed to determine the optical properties of the anterior segment of the intact eye. This consists of a probe that is inserted into the posterior sclera and detects light passing through the anterior segment. The probe is connected to a charge-coupled device spectrophotometer via a fiber optic bundle. It was determined that
J, Dillon, L, Zheng, J C, Merriam, E R, Gaillard   +3 more
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Robust megavoltage x-ray spectra estimation from transmission measurements

Journal of X-Ray Science and Technology, 2009
Megavoltage X-ray sources are commonly used for therapy planning, and knowledge of their spectral distribution is important for accurate dose calculations. There are many methods that could provide reasonable estimations of Megavoltage X-ray spectra, when very accurate attenuation data or at least very good set of initial guesses of the spectra are ...
Marian, Manciu, Felicia S, Manciu, Teodor, Vulcan, Elena, Nes, Robert G, Waggener   +4 more
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Modeling the Transmission Spectra of WASP-31b

Proceedings of the International Astronomical Union, 2018
AbstractWasp-31b is a planet of 0.48 Jupiter masses and 1.55 Jupiter radii, with orbital period of 3.4-days around a metal-poor, late-F-type, V = 11.7 dwarf star. The planet has a large atmospheric scale height that makes it a good target for transmission spectroscopy.
J. Chouqar, M. L. Morales, A. Daassou, A. Jabiri, Z. Benkhaldoun   +4 more
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Transmission spectra of superimposed fiber Bragg gratings

Proceedings of 2003 5th International Conference on Transparent Optical Networks, 2003., 2004
Multi-wavelength in-fiber passband optical filters have numerous applications in fiber-optic communication. In this paper, we investigate superimposed Fiber Bragg Gratings (FBG) through computer modeling. We show that by superimposing several gratings on the same length of fiber, it is possible to obtain transmission spectra with multiple passband ...
D.M. Meghavoryan, A.V. Daryan
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Electromodulated infrared transmission spectra of blue bronze

The European Physical Journal B, 2000
The infrared transmission of the quasi-one dimensional charge-density-wave (CDW) conductor blue bronze (K0.3MoO3) is affected by polarization of the CDW, and therefore by application of a voltage near or above the threshold for CDW depinning. In this paper, we compare the spectra associated with the relative change in transmission
B.M. Emerling, M.E. Itkis, J.W. Brill
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Transmission induced structure in electron emission spectra

Solid State Communications, 1978
Abstract Angle resolved secondary electron emission spectra from tungsten contain fine-structure which to a large extent can be correlated with high density-of-states regions in the bulk band structure. In addition to such structure, strong “extra” peaks have been observed.
N.E. Christensen, R.F. Willis
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