Analysis of decay chains of superheavy nuclei produced in the 249Bk+48Ca and 243Am+48Ca reactions

2017/05/11 by В. Б. Злоказов, V. K. Utyonkov · 5 citations
Physics and Astronomy · Engineering · Chemistry · #Nuclear physics research studies #Nuclear reactor physics and engineering #Nuclear Physics and Applications #Physics #Decay chain #Isotope #Nuclear physics #Radioactive decay #Nuclear reaction #Radiochemistry #Atomic physics #Chemistry

paper · pdf · doi:10.1088/1361-6471/aa7293

openalex publication_date 2017/05/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The analysis of decay chains starting at superheavy nuclei 293 Ts and 289 Mc is presented. The spectroscopic properties of nuclei identified during the experiments using the 249 Bk+ 48 Ca and 243 Am+ 48 Ca reactions studied at the gas-filled separators DGFRS, TASCA and BGS are considered. We present the analysis of decay data using widely adopted statistical methods and applying them to the short decay chains of parent odd- Z nuclei. We find out that the recently suggested method of analyzing decay chains by Forsberg et al may lead to questionable conclusions when applied for the analysis of radioactive decays. Our discussion demonstrates reasonable congruence of α -particle energies and decay times of nuclei assigned to isotopes 289 Mc, 285 Nh and 281 Rg observed in both reactions.

Citations

• Recoil-α-fission and recoil-α–α-fission events observed in the reaction 48Ca + 243Am
• Decay spectroscopy of element 115 daughters:Rg<mml:mprescripts/><mml:none/>280→Mt<mml:mprescripts/><mml:none/>276andMt<mml:mprescripts/><mml:none/>276→Bh<mml:mprescripts/><mml:none/>272
• A new assessment of the alleged link between element 115 and element 117 decay chains

Cited by

• New isotope Mc<mml:mprescripts/><mml:none/>286 produced in the Am<mml:mprescripts/><mml:none/>243+Ca<mml:mprescripts/><mml:none/>48 reaction
• Synthesis and properties of isotopes of the transactinides
• Moscovium [wikipedia]
• Nihonium [wikipedia]
• Tennessine [wikipedia]

Related

• 48Ca+249Bk fusion reaction leading to element Z = 117: long-lived α-decaying 270Db and discovery of 266Lr.
• Experimental studies of the<mml:mrow/>249Bk + <mml:mrow/>48Ca reaction including decay properties and excitation function for isotopes of element 117, and discovery of the new isotope<mml:mrow/>277Mt
• Heaviest nuclei from48Ca-induced reactions
• Spectroscopy of Element 115 Decay Chains
• Production of 287,288 Mc isotopes in the 48 Ca + 243 Am reaction at China Accelerator Facility for Superheavy Elements