Sagaidak, R. N. (2019) Durability of targets and foils in experiments on synthesis of superheavy nuclei. Il nuovo cimento C, 42 (2-3). pp. 1-4. ISSN 1826-9885
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Abstract
Durability of targets and window foils irradiated by intense heavy ion (HI) beams in the experiments on synthesis of superheavy nuclei (SHN), which are carried out in Dubna with a Gas-Filled Recoil Separator (DGFRS), has been considered. High fluxes of HIs and heat generated within relatively small areas and thicknesses of the target and foils are inherent in such long-term experiments. The ability of these elements to withstand radiation damages, sputtering and evaporation of atoms becomes questionable. All the processes are influenced by the target (foil) temperature and none of them is independent of the others, but they can be considered separately. Thus, sputtering yields were approximated on the grounds of available models and experimental data and compared to the results of measurements carried out to verify the estimates. The temperature of the target (foil), in turn, was estimated in the conditions of pulse heating followed by subsequent cooling with a radiation emitted from their surfaces. These conditions correspond to the rotating target and window irradiated by a continuous HI beam in the DGFRS experiments. Estimates show that radiative cooling might be the most effective way of heat removal at the temperature of few hundred Celsius degrees.
| Item Type: | Article |
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| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 30 Nov 2020 17:16 |
| Last Modified: | 30 Nov 2020 17:16 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/20451 |
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