Experimental Technique The Mass Spectrometer

The acceleration for a curving particle of velocity u moving on a circle of radius r is j /r so that 

Substituting Equation 2 into Equation 3 and squaring both sides, we obtain 

Equation 4 piediets that if we fix the voltage V and magnetic field H, ions of smaller eharge-to-mass ratio (that is, e/m) should follow a curve of larger radius than those having a large value of e/m. Because the radius of the analyzer 

The percent by mass has no units because it is a ratio of two quantities with the same units. 

Mole Fraction (x) The mole fraction of a component of a solution, say, component A, is written jca and is defined as the ratio of the number of moles of A to the total number moles of all components of the solution that is. 

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