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Article
Catalytic effects in reactions of chromium(III) part II: The role of excess ligand buffer in complexation of Cr(III) with some aminopolycarboxylic acids
The complexation of Cr (III) by EDTA, HEDTA and DCTA is channelled through ion pair formation between Cr (III) and the ambient ligand species. The ion pair further undergoes deprotonation giving rise to hydrox...
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Article
Temperature dependence of79BrNQR frequency in cadmium strontium, barium, zinc, magnesium and nickel bromates
The79Br quadrupole resonance in cadmium, strontium, barium, zinc, magnesium and nickel bromates is studied in the range 77 to 305 K. The temperature dependence of the resonance frequencies in these systems has be...
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Article
Selective ir laser chemistry of CDF3 in natural fluoroform
Selective decomposition of CDF3 at natural abundance level (≈150ppm) in fluoroform has been achieved by infra-red multiple-photon excitation at moderate substrate pressure using 100 ns FWHM CO2 laser pulses. Effe...
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Article
Infrared laser multiple photon dissociation of thiophene in gas phase
Infrared laser multiple photon excitation/dissociation of Thiophene (Th) was studied as a function of Th pressure, laser pulse energy, pulse duration and added buffer gas. While the excitation process was prob...
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Article
T/D isotope selectivity in CO2 laser induced multiple-frequency multiphoton dissociation of trifluoromethane-T
Isotope-selective multiphoton dissociation of CTF3 in the presence of CDF3 by TEA CO2 laser is studied. The highest T/D selectivity of 58 was observed at a sample pressure of 2 Torr in the presence of 20 Torr of ...
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Article
Selectivity enhancement in tritium isotope separation by multiple frequency multiple photon dissociation of the CTF3/CHF3 System
Isotope separation of tritium by multiple photon dissociation process in multiple frequency fields of a TEA-CO2 laser is reported for the first time. A ten-fold improvement in the bulk selectivity was obtained in...
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Article
TEA CO2 laser-induced photodissociation of UF6 via interspecies V-V energy transfer from multiple photon excited halomethanes
The dissociation of UF6 sensitized by multiple photon excitation of a series of halomethanes: CF4, CF3Cl, and CF2Cl2 has been investigated. The roles of various experimental parameters like exciting frequency, fl...
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Abstracts
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Article
Carbon-13 enrichment by IR laser chemistry of CHF3-Cl2
IR laser chemistry of CHF3 is investigated in both neat form and in the presence of Cl2 for carbon-13 enrichment. Infrared multiple-photon dissociation of CHF3 is an order of magnitude more efficient in the scave...
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Article
Laser isotope separation of 13C: A comparative study
IR laser chemistry of (CF3Br/Cl2) mixture and neat CF2HCl are examined in the context of 13C enrichment. Decomposition extent, enrichment factor and energy absorbed are measured for both systems at their respecti...
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Article
Recent investigations on some cubic Laves phase compounds of rare earth and transition metals
Pseudobinary alloy, Tb0·27Dy0·73Fe2−δ , belonging to C-15 cubic Laves phase having MgCu2-type structure, possesses large magnetostriction and high magnetomechanical coupling coefficient. T...
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Article
Diffusion of Carbon into RE2Fe17(RE=RARE Earth) Lattice: A High Temperature Approach
The interstitial carbides HoErFe15Ga2Cy (y=0,0.5,1.0,1.5,2.0) were synthesized by are melting technique and characterized by X-ray diffraction and magnetization measurements. The hexagonal Th2Ni17 type structure ...
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Article
Recent advances in 2 : 17 and 3 : 29 permanent magnet materials
The structural and magnetic properties of 2 : 17 compounds, their nitrides and carbides and the recent development of the novel 3 : 29 compounds are discussed.
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Article
Microstructural and magnetic studies on P/M processed (Nd14.9Dy1.9)(Fe65.0Co8.0Cu1.0Ga1.0Nb0.7) B7.5 alloy
Sintered samples of (Nd14.9 Dy1.9) (Fe65 Co8 Cu1.0 Ga1.0 Nb0.7)B7.5 were prepared and subjected to stepwise annealing in the temperature range 875 K–675 K. The XRD and metallographic (optical and electron microsc...