• Featured in Physics
  • Letter

First experiment at the Super Heavy Element Factory: High cross section of Mc288 in the Am243+Ca48 reaction and identification of the new isotope Lr264

Yu. Ts. Oganessian et al.
Phys. Rev. C 106, L031301 – Published 29 September 2022
Physics logo See synopsis: Super Heavy Element Factory Releases First Results
PDFHTMLExport Citation

Abstract

We present results of the first experiment aimed at the synthesis of Mc isotopes in the Am243+Ca48 reaction performed at the new gas-filled separator DGFRS-2 online to the new cyclotron DC280 at the Super Heavy Element Factory at JINR. Fifty-five new decay chains of Mc288 and six chains assigned to Mc289 were detected. The α decay of Db268 with an energy of 7.6–8.0 MeV, half-life of 164+6h, and a branch of 5515+20% was registered for the first time, and a new spontaneously fissioning isotope Lr264 with a half-life of 4.91.3+2.1h was identified. The cross section for the Am243(Ca48,3n)Mc288 reaction was measured to be 17.14.7+6.3 pb, which is the largest value for the known superheavy nuclei at the island of stability.

  • Figure
  • Figure
  • Received 11 March 2022
  • Revised 2 May 2022
  • Accepted 17 August 2022

DOI:https://doi.org/10.1103/PhysRevC.106.L031301

©2022 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

synopsis

Key Image

Super Heavy Element Factory Releases First Results

Published 29 September 2022

Initial findings of the Super Heavy Element Factory—an atom smasher in Russia—reveal details about some of the heaviest known elements.

See more in Physics

Authors & Affiliations

Click to Expand

Article Text (Subscription Required)

Click to Expand

Supplemental Material (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 106, Iss. 3 — September 2022

Reuse & Permissions
Access Options
CHORUS

Article Available via CHORUS

Download Accepted Manuscript
Author publication services for translation and copyediting assistance advertisement

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
×