ALPHA PARTICLE SPECTROSCOPY BY GRIDDED IONIZATION CHAMBER.

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Bertolini, G.
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SPECTROSCOPY; NUCLEAR RADIATION;
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A gridded ionization chamber has been constructed with the aim of determining its ultimate energy resolution in alpha spectroscopy, utilizing a cooled FET pre-amplifier of the type normally employed with semiconductor detectors. With suitable mechanical collimation of the alpha particles, their fine structure has been measured with an energy resolution of approximately 11. 5 kev (fwhm), achieved using an Ar plus 0. 75% C//2H//2 mixture as the filling gas.
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页码:285 / 289
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