A system is described for making low temperature electron bombardment studies. A liquid helium Dewar is used in conjunction with a 1.2-MeV Dynamitron electron accelerator. Cooling is by conduction, and annealing is accomplished by balancing the helium flow rate through the cooling coils with a heater located within the cooling head. Details of the sample mount are given along with the beam positioning and monitoring devices.
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Lowe et al. (1963) studied this question.
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