Electrical volt

They had not been able to control the chain reaction, but Hahn and Strassmann showed that a chain reaction cotdd occur and that, in theory, fission could produce an enormous amoimt of energy. Hahn and Strassmann suggested that the fission of a single nucleus of uranium could spark a chain reaction releasing energy equivalent to hundreds of millions of electrical volts. An entirely new class of super-weapon... 

Upon acceleration through an electric potential of V volts, ions of unknown m/z value reach a velocity v = f2zeV/m]" ). The ions continue at this velocity (drift) until they reach the detector. Since the start (to) and end (r) times are known, as is the length d of the drift region, the velocity can be calculated, and hence the m/z value can be calculated. In practice, an accurate measure of the distance d is not needed because it can be found by using ions of known m/z value to calibrate the system. Accurate measurement of the ion drift time is crucial. 

Ions formed in the ion source are considered to be the normal ions in a mass spectrum. For example, as illustrated in Figure 33.2, some of the ions (m/) dissociate to smaller mass ions (m," ) and neutrals (Hq) any unchanged ions (mC) and the fragments (mj" ) are drawn out of the source by an electric potential of V volts. 

For such instruments, the ions are accelerated from an ion source by using an electric potential of several thousand volts. 

Resistivity/Conductivity. The resistivity or specific resistance of a material is the electric resistance offered by an element of the material having unit length and unit cross-sectional area. The current iatensity is proportional to the voltage across its path, and is iaversely proportional to resistance. This relationship is expressed by Ohm s law, where I = current ia amperes, E = poteatial ia volts, and R = resistance ia ohms. 

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