INTENSITIES OF EMISSION LINES IN FLAMES OF METAL HALIDES WITH ACTIVE NITROGEN

1963 ◽  
Vol 41 (8) ◽  
pp. 2060-2066 ◽  
Author(s):  
L. F. Phillips
Keyword(s):  
Energy Transfer ◽  
Energy Transfer Process ◽  
Nitrogen Molecule ◽  
Spectral Lines ◽  
Emission Lines ◽  
Metal Halides ◽  
Kcal Mole ◽  
Active Nitrogen ◽  
Atom Concentration ◽  
Excitation Mechanisms

The intensities of spectral lines emitted by flames of a number of metal halides with active nitrogen have been found to vary as the square of the nitrogen atom concentration. When the total energy required for simultaneous dissociation of the halide and excitation of the metal atom is less than about 200 kcal/mole the energy transfer process is too efficient to be attributed to the termolecular reaction of a halide molecule with a pair of nitrogen atoms. The observations are consistent with the hypothesis that in this case energy is transferred to the halide molecule during collision with a nitrogen molecule in the 5Σg+ state. Possible excitation mechanisms are discussed for less intense lines which would require up to 276 kcal/mole for simultaneous dissociation and excitation.

Vacuum ultraviolet chemiluminescence from the reactions of active nitrogen with I2, IBr, ICI, and ICN

1968 ◽  
Vol 46 (8) ◽  
pp. 1429-1434 ◽  
Author(s):  
L. F. Phillips
Keyword(s):  
Energy Transfer ◽  
Emission Intensity ◽  
Vacuum Ultraviolet ◽  
Nitrogen Molecule ◽  
Emission Lines ◽  
Kcal Mole ◽  
Active Nitrogen ◽  
Excitation Mechanisms ◽  
Excited Nitrogen ◽  
Cl Atoms

Numerous emission lines from excited I, Br, and Cl atoms have been observed between 1261 and 2062 Å. For the flames with I2, IBr, and ICl it is possible to assign excitation mechanisms on the basis of the dependence of emission intensity on either [N] or [N]2. In the case of dependence on [N] the emission is the result of energy transfer from an excited nitrogen molecule, which is produced by reaction of N with NI, has an energy of 185 ± 3.5 kcal/mole, and is identified with the predicted 3Δu species. The dissociation energy of NI is found to lie between 35.6 and 40 + 3.5 kcal/mole. It is proposed that excited nitrogen molecules can be produced as well as removed very rapidly by processes of the type[Formula: see text]

THE CHEMILUMINESCENT REACTION OF ACTIVE NITROGEN WITH THALLOUS HALIDES

1963 ◽  
Vol 41 (3) ◽  
pp. 732-738 ◽  
Author(s):  
L. F. Phillips
Keyword(s):  
Energy Transfer ◽  
Light Emission ◽  
Bimolecular Reaction ◽  
Emission Lines ◽  
Kcal Mole ◽  
Third Order ◽  
Active Nitrogen ◽  
Simultaneous Production ◽  
Chemiluminescent Reaction ◽  
Overall Efficiency

Energy transfer from active nitrogen to gaseous thallous halides leads to dissociation of the halide molecules with simultaneous production of excited thallium atoms. Thallium emission lines have been observed to correspond to the transfer of up to 221 kcal/mole to the TlX molecule. The process is kinetically third order but the high overall efficiency of light emission and thallous halide destruction requires a mechanism which involves a bimolecular reaction of TlX with an excited N2 formed during N-atom recombination.

Spectroscopic study of the reaction of active nitrogen with some organometallic compounds

1967 ◽  
Vol 45 (16) ◽  
pp. 1891-1896 ◽  
Author(s):  
R. E. March ◽  
H. I. Schiff
Keyword(s):  
Energy Transfer ◽  
Spectroscopic Study ◽  
Organometallic Compounds ◽  
Initial Energy ◽  
Emission Lines ◽  
Kcal Mole ◽  
Vibrationally Excited ◽  
Active Nitrogen ◽  
Metal Atoms

Transfer of energy from constituents in active nitrogen to gaseous organometallic compounds leads to dissociation of the organometallic and excitation of CN and (or) metal atom. Organometallic compounds of aluminium, zinc, and boron were used in this investigation. The observed emission lines from metal atoms and highly vibrationally excited CN correspond to an initial energy transfer in excess of 200 kcal/mole. The possible role of N2(5Σg+) molecules as excitors is discussed in the light of the results obtained.

REMO4 (RE = Y, Gd; M = Nb, Ta) phosphors from hybrid precursors: Microstructure and luminescence

2008 ◽  
Vol 23 (3) ◽  
pp. 679-687 ◽  
Author(s):  
Xiuzhen Xiao ◽  
Bing Yan
Keyword(s):  
Energy Transfer ◽  
Transfer Process ◽  
Energy Transfer Process ◽  
Luminescent Properties ◽  
Concentration Quenching ◽  
Emission Lines ◽  
Rare Earth Ion ◽  
Red Emission ◽  
Characteristic Emission

In this paper, YNbO4:0.05Tb3+ and GdTaO4:0.05Eu3+ phosphors were chosen to study the influence of the firing temperature on the phase and morphologies using novel modified in situ chemical coprecipitation technology. Results show that until the temperature reaches 1000 °C, the formation of YNbO4 and GdTaO4 were realized; with the increasing firing temperatures, those samples present better crystalline structure and better morphologies. The luminescent properties of Eu3+ and Tb3+ have shown that after calcinations at 1000 °C, the intensity of Eu3+ and Tb3+ increases strongly with the increasing of the calcinations temperature, while remaining relatively unchanged at the temperatures ranging between 600 and 800 °C. Furthermore, other rare earth ion doped GdTaO4 and Y1−xGdxTaO4:5 mol% Eu3+ with the different yttrium content were also synthesized after calcinating at the preferable temperature using the same method. The photoluminescence of Y1−xGdxTaO4:5 mol% Eu3+ revealed that the red emission intensity of Eu3+ increases with the increasing of gadolinium content, indicating that Gd ion plays an important role in the energy transfer process. Also, the concentration quenching has been studied in the GdTaO4:Eu3+/Dy3+ systems. Moreover, the characteristic emission lines of Tb3+, Pr3+, and Er3+ in GdTaO4 were observed, showing that the energy transfer process appears between host and those activators.

Heat, quantum mechanics and information

2015 ◽  
Vol 10 (2) ◽  
pp. 2692-2695
Author(s):  
Bhekuzulu Khumalo
Keyword(s):  
Information Theory ◽  
Quantum Mechanics ◽  
Energy Transfer ◽  
Transfer Process ◽  
Energy Transfer Process ◽  
Process Information ◽  
Double Slit Experiment ◽  
Slit Experiment ◽  
Double Slit

Heat has often been described as part of the energy transfer process. Information theory says everything is information. If everything is information then what type of information is heat, this question can be settled by the double slit experiment, but we must know what we are looking for. 

Research on the Electromagnetic Energy Transfer Process of High Power AC-DC-AC Converter

2019 ◽  
Author(s):  
Pei Yang ◽  
Chongjian Li ◽  
Chengsheng Wang ◽  
Qiongtao Yang ◽  
Pan Wang ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Transfer Process ◽  
High Power ◽  
Energy Transfer Process ◽  
Electromagnetic Energy

The afterglow and energy transfer mechanisms of active nitrogen

1970 ◽  
Vol 33 (1) ◽  
pp. 269-306 ◽  
Author(s):  
J Anketell ◽  
R W Nicholls
Keyword(s):  
Energy Transfer ◽  
Active Nitrogen ◽  
Transfer Mechanisms
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