Magnetic analysis

All analyzers use one or more of three basic principles (a) magnetic analysis, (b) electrostatic analysis, and (c) time-of-flight analysis. Magnetic analyzers of single and double focusing types are by far the most common ones currently in use, and will serve to illustrate the methods of analysis. Two other types of analyzers which have gained popularity for analytical applications but are omitted in the fol-... 

Gomes, J.D., Sousa, M.H., Tourinho, F.A. and Aquino, R. da Silva, G.J., Depeyrot, J., Dubois, E., Perzynski, R. (2008) Synthesis of core-shell ferrite nanopartides for ferrofluids chemical and magnetic analysis. Journal of Physical Chemistry C, 112 (16), 6220-6227. 

Fig. 25 Adiabatic heat capacity for BABI below 200 K (upper left) and over full temperature range (lower left). Magnetic heat capacity after subtraction of lattice contributions (upper right), and with fitted curves (lower right) using the following models (A) square planar AFM system with /2D/k = —1.6K (B) square planar bilayer AFM system with /2D/fc = — 1.2K and interlayer Jjk = — 1.9K (C) AFM spin pairing with Jjk = —2.8 K D is same model as B, with /2D/k = — 1.4K and interlayer Jjk = —1.3 K (from the magnetic analysis of Fig. 24).

Engelhardt L, Rainey, R. Tool for magnetic analysis package. Available at http // www.compadre.org/OSP/document/ServeFile.cfm7ID = 10038 DocID = 1659. 

It should be noted that a D2 grain size dependence for Hc is also predicted by Hoffmann s ripple theory [19], which is a more detailed micro-magnetic analysis for a simplified, two dimensional model system. 

Temperature Programmed Reduction and Thermo-Magnetic Analysis. The results of temperature programmed reduction experiments performed on a catalyst prepared by incipient wetness impregnation and the physical mixture are presented in Fig. 1. 

Double focusing magnetic sector analysers use two successive separations, first electrostatic, which separates species on the basis of charge, and then magnetic analysis for mass separation the combined separation is thus made on the basis of the m/z ratio. 

At sufficiently high energies and for cases where the radioisotope has a higher Z than the stable isobar, separation by fully stripping with subsequent magnetic analysis can be accomplished. This method has been investigated for the systems "Al""-"Mg "", >an+ 36gi6. k W and Ni "- Co ". Isobar... 

Fig. 16. Mass spectrum of iodine obtained by magnetic analysis. (After Baumann, Heinicke, Kaiser and Bethge )...

Pichler and Merkel (24) investigated the composition of iron catalysts at various stages of pretreatment and synthesis by chemical and thermo-magnetic analysis. Copper-free iron catalysts, carburized at 325°C. before medium-pressure synthesis, were virtually completely transformed to a ferromagnetic higher iron carbide with a Curie point of 265°C., whose formula corresponded to approximately Fe2C. 

Samples containing nickel lend themselves particularly well to thermo-magnetic analysis for metallic nickel because of its rather low Curie... 

Walden, J. M. C. Slattery, 1993. Verification of a simple gravity technique for separation of particle size fractions suitable for mineral magnetic analysis. Earth Surf. Proc. Landforms. 18 829-833. Yu, L. F. Oldfield, 1993. Quantitative sediment source ascription using magnetic measurements in a reservoir catchment system near Nijar, S.E. Spain. Earth surf. Proc. Landforms 18 441 54. 

Resonance energies of the compound state in a nuclear reaction may be detected by observation of inelastic scattering, usually of protons or alpha particles. Electrostatic generators and magnetic analysis techniques are again... 

The C (rfa)B reaction, rather exceptionally, has a negative -value. Ashmore and Raffle using a beam of 7 MeV deuterons from a cyclotron, coupled with magnetic analysis of the disintegration particles, found excitation of the ground state and 0.72 MeV state of B . The T = state at 1.74 MeV was not observed, but neither was the nearby T = 0 state at 2.15 MeV. The reaction C ( a) B apparently does not share the resonance peak at 0.65 MeV shown by the 0 dp) reaction (Curling and Newton ). 

The Si ( a) AP reaction has been studied with deuterons of energy from 5 to 7 MeV, and with magnetic analysis of the alpha particles by Browne in order to identify T = 0 levels of AP . The energy release in the reaction SP (dcf) AP has also been measured by magnetic spectroscopy S1. ... 

The (dp) reactions in light elements have also been accurately studied by L.M. Khrom-CHENKO using magnetic analysis (Sect. 13) Dokl. Akad. Nauk. SSSR. 93, 451 (1953) 94, 1037 (1954) 98, 761 (1954) and (with V. A. Blinov) J. exp. theor. Phys. USSR. 28, 741 (1955). 

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