Control of quantum-mechanical processes and systems by A.G. Butkovskiy, Yu.I. Samoilenko

By A.G. Butkovskiy, Yu.I. Samoilenko

'Et moi ..... si j'avait su remark en revenir, One carrier arithmetic has rendered the je n'y serais aspect aIle.' human race. It has placed logic again Jules Verne the place it belongs. at the topmost shelf subsequent to the dusty canister labelled 'discarded non. The sequence is divergent; for that reason we will be sense'. in a position to do whatever with it. Eric T. Bell O. Heaviside arithmetic is a device for suggestion. A hugely precious device in an international the place either suggestions and non linearities abound. equally, every kind of elements of arithmetic function instruments for different components and for different sciences. making use of an easy rewriting rule to the quote at the correct above one reveals such statements as: 'One carrier topology has rendered mathematical physics .. .'; 'One carrier good judgment has rendered com puter technology .. .'; 'One provider class idea has rendered arithmetic .. .'. All arguably precise. And all statements accessible this fashion shape a part of the raison d'etre of this sequence.

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At higher densities, collisional transitions within a given principal quantum number lead to a relative depletion of the 4 38 state which, in turn, leads to a change of the intensity ratio for the 4713 and 4921 Alines; frequently this effect is interpreted as an increase in electron temperature. Experiments carried out with a plasma produced in a high-frequency discharge [18] have verified the validity of the theoretical ideas concerning the applicability of the helium method for measuring temperatures at plasma densities greater than ~1012 cm- 3• ELECTRON TEMPERATURE FROM EMISSION INTENSITY RATIOS 47 There is one other process that leads to a change in the relative intensities of the helium lines.

A coil is oriented in a definite way at the point at which one wishes to obtain the time variation of the magnetic field. Very frequently this point is in a region filled with plasma; hence, in making measurements with electrostatic probes it would be necessary to have data on the effect of the measuring instrument on the obj ect being investigated. It is possible to verify the effect of the instrument, as a rule, only by some sort of substitution experiment. A simple control experiment can be carried out by introducing two identical probes into the plasma and noting the dependence of the probe signal as a function of distance between the probes.

This finding means that the fixed magnetic field which confines the plasma also experiences the pressure of the high-frequency field (the interaction between the high-frequency field and the fixed field takes place throughout the plasma). 26) the intensity of the high-frequency field. Thus, the measurement of the diamagnetic effect at the magnetoacoustic resonance does not give a direct determination of the gas kinetic pressure. Instead of obtaining the gas kinetic pressure we actually obtain the sum nkT + H2j8n.

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