NDLI: Shifting the closed proton shell to Z = 122 —A possible scenario to understand the production of superheavy elements Z = 112−118

Content Provider	Springer Nature Link
Author	Armbruster, P.
Copyright Year	2008
Abstract	The recent experiments at FLNR, Dubna, demonstrated that cross-sections to produce SHEs by 48Ca-induced reactions on actinide targets increase beyond Z = 111, reach a maximum of 5 pb at Z = 114 and fall below the 1 pb level at Z = 118. A scenario is proposed to understand the findings within the frame of former experimental results of heavy-element production and theoretical predictions about the stability of the nuclides concerned. New ingredients introduced are: 1) to shift the next proton shell beyond Pb from Z = 114 to Z = 122; 2) the isotopes of the elements Z = 112 to Z = 118 are deformed and their nuclei have oblate shapes; 3) the fission barriers around the next nucleus with doubly closed shells 306 184 122 are larger than the neutron separation energies and reach values in the range of 10MeV. The ascent of the flat top at 306 184 122 is described by the proposed scenario, which likewise excludes reaching the doubly closed shell region at the top by today’s experimental methods.
Starting Page	159
Ending Page	167
Page Count	9
File Format	PDF
ISSN	14346001
Journal	The European Physical Journal A - Hadrons and Nuclei
Volume Number	37
Issue Number	2
e-ISSN	1434601X
Language	English
Publisher	Springer-Verlag
Publisher Date	2008-07-25
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nuclear Fusion Elementary Particles and Nuclei Nuclear Physics, Heavy Ions, Hadrons
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics

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