Spectrum line spectra

Figure 8.9 Top Periodic waveform with a line harmonic frequency spectrum. Bottom Nonperiodic waveform has a continuous frequency spectrum. Line spectrum amplitude [volt]. Continuous spectrum amplitude [volt y s ].

The tliree-line spectrum with a 15.6 G hyperfine reflects the interaction of the TEMPO radical with tire nitrogen nucleus (/ = 1) the benzophenone triplet caimot be observed because of its short relaxation times. The spectrum shows strong net emission with weak E/A multiplet polarization. Quantitative analysis of the spectrum was shown to match a theoretical model which described the size of the polarizations and their dependence on diffrision. 

The molecular structures were rendered with good-quality shading on a blue background. Isosurfaces produced from cube files or checkpoint files also looked nice. Molecular vibrations can be animated on screen and vibrational displacement vectors displayed. The vibrational line spectrum may be displayed too, but the user has no control over the axes. There is no way to set the background color. The display can be saved using several image file formats. 

P.D. Horn and Y.M. Gupta, Luminescence R-Line Spectrum of Ruby Crystals Shocked to 125 kbar along the Crystal c-Axis, Phys. Rev. B 39, 973-979 (1989). 

The EPR spectrum of the ethyl radical presented in Fig. 12.2b is readily interpreted, and the results are relevant to the distribution of unpaired electron density in the molecule. The 12-line spectrum is a triplet of quartets resulting from unequal coupling of the electron spin to the a and P protons. The two coupling constants are = 22.38 G and Op — 26.87 G and imply extensive delocalization of spin density through the a bonds Note that EPR spectra, unlike NMR and IR spectra, are displayed as the derivative of absorption rather than as absorption. 

Linien-spanntmg, /. (Elec.) line tension, line voltage, -spektnun, n. line spectrum, -vcr-sohiebung, /. displacement of lines, -zahl, /. number of lines, -zug, m. line, trace (in a graph). 

Mehrheit,/. majority plurality multiplicity, mehr-kantig, a. many-sided, -kemig, a. polynuclear, having more than one nucleus. Mehr-korperproblem, n. niany-body problem, -kristall, m. polycryatal. -linienspektrum, n. many-line spectrum, mehr-malig, a. repeated, -mals, adv. several times, repeatedly. 

Spektralanalyse, /. spectrum analysis, spektralanalytisch, a. spectroscopic, spectro-metric. — adv. by spectrum analysis. Spektral-apparat, to. spectroscopic apparatus, -beobachtung, /. spectroscopic observation, -bereich, -bezirk, to. spectral region, -farbe, /. spectral color, spectrum color, -gegend, /. spectral region, -lampe, /. spectrum lamp, -hnie, /. spectrum line, spectral line, -probe, /. spectrum test, -rohr, n.. -rohre, /. spectrum tube, spectral tube, -tafel, /. spectrum chart, spectral chart. 

Vielling, m. Cryat.) multiple twin. Viellinienspektrum, n. many-line spectrum, viellinig, a. many-line, multilinear, viel-mal, adv. many times, -mehr, adv. much more, more. — conj. rather, -phasig, a. polyphase, multiphase, -polig, a. multipolar. 

Fig. 15-2. Contrast between the continuous spectrum of a hot tungsten ribbon and the line spectrum of a hydrogen discharge tube.

To explain why hydrogen atoms emit the line spectrum, we must seek a model with the... 

Since an atom of a given element gives rise to a definite, characteristic line spectrum, it follows that there are different excitation states associated with different elements. The consequent emission spectra involve not only transitions from excited states to the ground state, e.g. E3 to E0, E2 to E0 (indicated by the full lines in Fig. 21.2), but also transisions such as E3 to E2, E3 to 1( etc. (indicated by the broken lines). Thus it follows that the emission spectrum of a given element may be quite complex. In theory it is also possible for absorption of radiation by already excited states to occur, e.g. E, to 2, E2 to E3, etc., but in practice the ratio of excited to ground state atoms is extremely small,... 

Products of decomposition may be of such small particle size that superparamagnetism is exhibited [329] (e.g. by Fe203 [324,326] where the characteristic six-line spectrum of antiferromagnetic Fe203 is replaced by a doublet with an isomeric shift corresponding to Fe3+). 

Four dichloro isomers, the 1,6-, 2,3-, 2,7-, and 2,8-dichlorodibenzo-p-dioxins, were studied. These compounds also dissolve in TFMS acid, forming cation radicals in the absence of oxidizing agents or UV irradiation. The 2,8-isomer (Figure 5) exhibited a three-line spectrum, in agreement with the two equivalent protons in the 3,6 positions. The 2,7-isomer should also exhibit a three-line spectrum, similar to the 2,8-... 

Fig. 1. Absorption and photoluminescence dashed line) spectra of a thin film of LPPP 26 and electroluminescence solid line) spectrum of an ITO / LPPP 26 (60 nm) / A1 device (from [50])...

Absorption-mode spectrum The spectrum in which the peaks appear with Lorentzian line shapes. NMR spectra are normally displayed in absolute-value mode. 

The isomer shift, d, arises from the Coulomb interaction between the positively charged nucleus and the negatively charged s-electrons, and is thus a measure for the s-electron density at the nucleus, yielding useful information on the oxidation state of the iron in the absorber. An example of a single line spectrum is fee iron, as in stainless steel or in many alloys with noble metals. 

Figure 6.6 Vibrational coherence on a pNB-adsorbed TiO2(110) surface, (a) The raw SH intensity, (b) the modulated component, (c) the Fourier-transformed spectrum, the gray lines show the transformed spectrum. The spectrum simulated with Lorentzian functions is overlaid with broken lines. The pNB-adsorbed surface was irradiated in air with p-polarized pump (8mjcm ) and p-polarized probe (8mjcm ) pulses of a 550-nm wavelength.

Very thick absorbers may be required for applied-field measurements to achieve reasonable absorption depths and measuring times because the Mossbauer spectra are usually split into several hyperfine components. Here the iron content may be as large as 100 pg Fe per cm (1.75 pmol Fe per cm ), which would correspond to t 1 for a two-line spectrum. For smdies of frozen solutions, Fe concentrations of 1 mM are desirable for each nonequivalent iron site [35]. 

An instructive description of the first-order perturbation treatment of the quadrupole interaction in Ni has been given by Travis and Spijkerman [3]. These authors also show in graphical form the quadrupole-spectrum line positions and the quadrupole-spectrum as a function of the asymmetry parameter r/ they give eigenvector coefficients and show the orientation dependence of the quadrupole-spectrum line intensities for a single crystal of a Ni compound. The reader is also referred to the article by Dunlap [15] about electric quadrupole interaction, in general. 

The broadened single-line spectrum of the early measurements by Cohen et al. [176], obtained with a TaC absorber and an annealed W/W metal source at room temperature, was assigned by the authors to the 3/2 <-> 3/2 transition with an estimated QJQg ratio between 0.8 and 0.95. 

Less than the natural line width materials are magnetic and exhibit a six-line spectrum at low... 

Name from the indigo-colored bands in the line spectrum makes flames blue violet... 

---