Development of an odd-Z-projectile reaction for heavy element synthesis: 208Pb(64Ni, n)271Ds and 208Pb(65Cu, n)272111

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Seven {sup 271}Ds decay chains were identified in the bombardment of {sup 208}Pb targets with 311.5- and 314.3-MeV {sup 64}Ni projectiles using the Berkeley Gas-filled Separator. These data, combined with previous results, provide an excitation function for this reaction. From these results, an optimum energy of 321 MeV was estimated for the production of {sup 272}111 in the reaction {sup 208}Pb({sup 65}Cu, n). One decay chain was observed, resulting in a cross section of 1.7{sub -1.4}{sup +3.9} pb. This experiment confirms the discovery of element 111 by the Darmstadt group who used the {sup 209}Bi({sup 64}Ni, n){sup 272}111 reaction.

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12 pages; OS: pc

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Folden III, C.M.; Gregorich, K.E.; Dullmann, Ch.E.; Mahmud, H.; Pang, G.K.; Schwantes, J.M. et al. August 16, 2004.

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Seven {sup 271}Ds decay chains were identified in the bombardment of {sup 208}Pb targets with 311.5- and 314.3-MeV {sup 64}Ni projectiles using the Berkeley Gas-filled Separator. These data, combined with previous results, provide an excitation function for this reaction. From these results, an optimum energy of 321 MeV was estimated for the production of {sup 272}111 in the reaction {sup 208}Pb({sup 65}Cu, n). One decay chain was observed, resulting in a cross section of 1.7{sub -1.4}{sup +3.9} pb. This experiment confirms the discovery of element 111 by the Darmstadt group who used the {sup 209}Bi({sup 64}Ni, n){sup 272}111 reaction.

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12 pages; OS: pc

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INIS; OSTI as DE00836679

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  • Journal Name: Physical Review Letters; Journal Volume: 93; Journal Issue: 21; Other Information: Submitted to Physical Review Letters: Volume 93, No.21; Journal Publication Date: 11/19/2004

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  • Report No.: LBNL--56169
  • Grant Number: AC03-76SF00098
  • DOI: 10.1103/PhysRevLett.93.212702 | External Link
  • Office of Scientific & Technical Information Report Number: 836679
  • Archival Resource Key: ark:/67531/metadc780605

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  • August 16, 2004

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  • Dec. 3, 2015, 9:30 a.m.

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  • Sept. 1, 2016, 6:59 p.m.

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Folden III, C.M.; Gregorich, K.E.; Dullmann, Ch.E.; Mahmud, H.; Pang, G.K.; Schwantes, J.M. et al. Development of an odd-Z-projectile reaction for heavy element synthesis: 208Pb(64Ni, n)271Ds and 208Pb(65Cu, n)272111, article, August 16, 2004; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc780605/: accessed July 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.