نتایج جستجو برای: fwhm
تعداد نتایج: 2910 فیلتر نتایج به سال:
Two 3-D position-sensitive semiconductor c-ray spectrometers operable at room temperature, have been fabricated using 1 cm3 cubic CdZnTe crystals. c-Ray spectra have been obtained from 11(x)]11(y)]20(z) voxels, each corresponding to &0.7]0.7]0.5 mm in the detector volume. Individual spectra from each of the 2420 voxels were corrected for electron trapping, di!erences in weighting potentials, an...
The BOOMERanG experiment is a stratospheric balloon telescope intended to measure the Cosmic Microwave Background anisotropy at angular scales between a few degrees and ten arcminutes. The experiment features a wide focal plane with 16 detectors in the frequency bands centered at 90, 150, 220, 400 GHz, with FWHM ranging between 18 and 10 arcmin. It will be flown on a long duration (7-14 days) f...
Solution-processed organo-lead halide perovskites are produced with sharp, color-pure electroluminescence that can be tuned from blue to green region of visible spectrum (425-570 nm). This was accomplished by controlling the halide composition of CH3NH3Pb(BrxCl1-x)3 [0 ≤ x ≤ 1] perovskites. The bandgap and lattice parameters change monotonically with composition. The films possess remarkably sh...
Bright green emitters with adjustable photoluminescence (PL) maxima in the range of 530-535 nm and full-width at half-maxima (fwhm) of <25 nm are particularly desirable for applications in television displays and related technologies. Toward this goal, we have developed a facile synthesis of highly monodisperse, cubic-shaped formamidinium lead bromide nanocrystals (FAPbBr3 NCs) with perovskite ...
The effects on surface morphology, crystal quality, and growth rate of undoped AlN layers grown on c-plane sapphire substrates due to the changes in growth parameters, such as V-III ratio, N2-H2 ratio, and growth temperature in LP-MOVPE are studied here. The optimized growth process resulted in an almost flat surface morphology with a significantly reduced number of hexagonal pits (3 · 10 cm−2)...
The Shape of the Relativistic Iron Kα Line from Mcg−6-30-15 Measured with the Chandra Hetgs and Rxte
We confirm the detection of the relativistically broadened iron Kα emission at 6.4 keV with simultaneous Chandra HETGS and RXTE PCA observations. Heavily binned HETGS data show a disk line profile with parameters very similar to those previously seen by ASCA. We observe a resolved narrow component with a velocity width ∼ 4700kms−1 (FWHM ∼ 11,000kms−1), that is most prominent, and narrower (FWHM...
978-1-4799-5233-5/14/$31.00 ©2014 IEEE Abstract—Fiber Bragg gratings (FBGs) technology has demonstrated its suitability for many applications in recent fiber technologies. Sensing application is one of the main applications of FBGs. In this work, we present a comprehensive investigation for using apodized FBGs in sensing applications. Different evaluation parameters such as, reflectivity, sidel...
Wave-breaking often occurs when a short intense optical pulse propagates in a long normally dispersive optical fiber. This effect has conventionally been avoided in fiber (super-)continuum-based pulse compression because the accumulated frequency chirp of the output pulse cannot be fully compensated by a standard prism (or grating) pair. Thus, the spectral extending capability of the wave-break...
A new imaging atmospheric Cherenkov telescope with a light-weight re ector has been constructed. Light, robust, and durable mirror facets of containing CFRP (Carbon Fiber Reinforced Plastic) laminates were developed for the telescope. The re ector has a parabolic shape (f/1.1) with a 30 m surface area which consists of sixty spherical mirror facets. The image size of each mirror facet is 0 .08 ...
Blue and white top-emitting organic light-emitting devices OLEDs with cavity effect have been fabricated. TBADN:3%DSAPh and Alq3:DCJTB/TBADN:TBPe/Alq3:C545 were used as emitting materials of microcavity OLEDs. On a patterned glass substrate, silver was deposited as reflective anode, and copper phthalocyanine (CuPc) layer as HIL and 4’-bis[N-(1-Naphthyl)N-phenyl-amino]biphenyl (NPB) layer as HTL...
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