英语翻译M.S.Mehta,1 B.K.Raj,2 S.K.Patra,3 and Raj K.Gupta11Department of Physics,Panjab University,Chandigarh 160 014,India2Department of Physics,BJB College,Bhubaneswar 751 014,India3Institute of Physics,Sachivalaya Marg,Bhubaneswar 751 005,Indi

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英语翻译M.S.Mehta,1 B.K.Raj,2 S.K.Patra,3 and Raj K.Gupta11Department of Physics,Panjab University,Chandigarh 160 014,India2Department of Physics,BJB College,Bhubaneswar 751 014,India3Institute of Physics,Sachivalaya Marg,Bhubaneswar 751 005,Indi
英语翻译
M.S.Mehta,1 B.K.Raj,2 S.K.Patra,3 and Raj K.Gupta1
1Department of Physics,Panjab University,Chandigarh 160 014,India
2Department of Physics,BJB College,Bhubaneswar 751 014,India
3Institute of Physics,Sachivalaya Marg,Bhubaneswar 751 005,IndiaThe binding energy,charge radius,and quadrupole deformation parameter for the isotopic chain of the
superheavy element bohrium (107Bh),from proton to neutron drip line,are calculated by using an axially
deformed relativistic mean field model.The potential energy surfaces for some of the selected nuclei are
plotted and the various possible shapes are investigated.The rms radii,density distributions,and two-neutron
separation energies are also evaluated and the single-particle energies for some illustrative cases are analyzed
to see the magic structures.Furthermore,the a-decay rates are calculated and compared with the available
experimental data for the recently observed new isotopes 266,267Bh.
DOI:10.1103/PhysRevC.66.044317 PACS number~:21.10.Dr,21.10.Tg,21.60.Fw
I.INTRODUCTION
The bohrium nucleus (Z5107,Bh!was first identified as
the isotope 262Bh,produced in 209Bi(54Cr,n) reaction @1#.
Untill recently,experimentally the decay properties of only
the 261,262,264Bh isotopes were known.For Z,107 nuclei,the
electronic configurations are well studied due to the longer
lifetimes .1 of these nuclei @2#.However,the chemistry
of elements Z5107 and Z5108 were unknown and the prospects
of the chemical studies for these next transactinide elements
did not look promising.Nevertheless,gas phase
chemistry with the lighter homologs Re and Os has been
known for quite some time @3–7# and the search for the
long-lived isotopes of element Z5107 was based on these
methods @5,6#.Recently,Wilk et al.@8# have identified the
neutron-rich 266,267Bh isotopes and estimated their half-life
times ;1 s and 1726
114 s,respectively.Thus,the relatively
longer lifetime of 267Bh makes possible to study now the
electronic structure of the Bh nucleus and test the available