Status of heavy element research using a gas-filled recoil separator at RIKEN
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A gas-filled type of recoil separator for heavy element research was installed at an experimental hall of RIKEN Linear Accelerator facility to realize getting higher intensity of primary beam and long beam time. Performance of the separator was studied using target recoils and various nuclear reactions. The results show the high performance of the separator for heave element research. As an application of the GARIS, production and identification of an isotope of the 110th element 271 have been performed using the 208Pb(64Ni,1n)271 reaction. Three decay chains coincide well both in decay times and energies with the ones reported by the group of SHIP experiment at GSI, Germany. Our results provide a confirmation of the synthesis of an isotope 271 of element 110.
Keywordsgas-filled recoil separator confirmation of element 110
PACS23.60.+e 25.70.−z 27.90.+b
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