• Milestone
  • Free to Read

Synthesis of the isotopes of elements 118 and 116 in the Cf249 and Cm245+Ca48 fusion reactions

Yu. Ts. Oganessian et al.
Phys. Rev. C 74, 044602 – Published 9 October 2006
An article within the collection: Transuranium Elements and the Physical Review and the Physical Review C 50th Anniversary Milestones

Abstract

The decay properties of 290116 and 291116, and the dependence of their production cross sections on the excitation energies of the compound nucleus, 293116, have been measured in the Cm245 (Ca48, xn)293x116 reaction. These isotopes of element 116 are the decay daughters of element 118 isotopes, which are produced via the Cf249+Ca48 reaction. We performed the element 118 experiment at two projectile energies, corresponding to 297118 compound nucleus excitation energies of E*=29.2±2.5 and 34.4±2.3 MeV. During an irradiation with a total beam dose of 4.1×1019 Ca48 projectiles, three similar decay chains consisting of two or three consecutive α decays and terminated by a spontaneous fission (SF) with high total kinetic energy of about 230 MeV were observed. The three decay chains originated from the even-even isotope 294118 (Eα=11.65±0.06 MeV, Tα=0.890.31+1.07 ms) produced in the 3n-evaporation channel of the Cf249+Ca48 reaction with a maximum cross section of 0.50.3+1.6 pb.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 31 January 2006

DOI:https://doi.org/10.1103/PhysRevC.74.044602

©2006 American Physical Society

Collections

This article appears in the following collections:

Transuranium Elements and the Physical Review

This collection marks the 150th anniversary of Dmitri Mendeleev’s discovery of the Periodic Table of Elements.

Physical Review C 50th Anniversary Milestones

This collection of milestone papers from PRC highlights research that remains central to current developments in nuclear physics.

Authors & Affiliations

Click to Expand

Article Text

Click to Expand

References

Click to Expand
Issue

Vol. 74, Iss. 4 — October 2006

Reuse & Permissions

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review C

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×