نتایج جستجو برای: emission spectra
تعداد نتایج: 275624 فیلتر نتایج به سال:
A vacuum ultraviolet (VUV) field emission lamp was developed by using a neodymium ion doped lutetium fluoride (Nd(3+) : LuF3) thin film as solid-state phosphor and carbon nanofiber field electron emitters. The thin film was synthesized by pulsed laser deposition and incorporated into the lamp. The cathodoluminescence spectra of the lamp showed multiple emission peaks at 180, 225, and 255 nm. Th...
Most lanthanide porphyrin derivatives exhibit ‘normal’ absorption spectra with Q and B bands. The rare earth ions have little effect on the absorption spectra, which are much like those of other closed-shell metalloporphyrins. However, their emission spectra vary according to which lanthanide ion is present. We observe two types of emissions: (i) a line emission arising from the lanthanide ion ...
Emission spectra of the microplasma discharge in N2, NO and O2 gas mixture was analyzed. The diagnosis of microplasma discharge was performed in order to understand the processes of NOx removal. An experimental Marx Generator was used as a pulsed power supply. Emission spectra for N2 gas show N2 second positive band system (N2 SPS) and N2 first negative band system (N2 FNS). 1000 ppm NO in N2 e...
We present Spitzer Infrared Spectrograph (IRS) observations of eleven intermediate polars (IPs). Spectra covering the wavelength range from 5.2 to 14 μm are presented for all eleven objects, and longer wavelength spectra are presented for three objects (AE Aqr, EX Hya, and V1223 Sgr). We also present new, moderate resolution (R ∼ 2000) near-infrared spectra for five of the program objects. We f...
The M a and M ~ emission spectra and the M IV and M v absorption spectra have been stud~ed for th~ r~re earth elements. It is conclusively shown that the complicated multiplet structure o~served .1I~ the enusslOn spectra is not real emission structure but is, inst~ad, pro?u~ed b! sample self-absorption. This Is.demonstrated by observing the emission spectra over wIde vanatlOns In take-?ff. angl...
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