Investigation of reactions with 50Ti and 54Cr for the synthesis of new elements
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F25%3A73631512" target="_blank" >RIV/61989592:15310/25:73631512 - isvavai.cz</a>
Result on the web
<a href="https://journals.aps.org/prc/abstract/10.1103/k2g4-5k7x" target="_blank" >https://journals.aps.org/prc/abstract/10.1103/k2g4-5k7x</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/k2g4-5k7x" target="_blank" >10.1103/k2g4-5k7x</a>
Alternative languages
Result language
angličtina
Original language name
Investigation of reactions with 50Ti and 54Cr for the synthesis of new elements
Original language description
The 238U(54Cr,4𝑛)288Lv and 242Pu(50Ti,3𝑛–4𝑛)288,289Lv reactions have been studied at the gas-filled separator DGFRS-2 at the SHE Factory at Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research. Three new isotopes were discovered: two α-decaying nuclei 288Lvwith α-particle energy 𝐸𝛼=11.08 MeV and half-life 𝑇1/2=2.0 ms, 289Lv with 𝐸𝛼=10.90 MeV, 𝑇1/2=2.4 ms, and granddaughter of 288Lv , spontaneously fissioning 280Cn with 𝑇1/2=10µs , which was observed after the first registration of α decay of 284Fl with 𝐸𝛼=10.57 MeV. Besides, for the first time we reliably registered the pxn channel of the 242Pu+50Ti reaction which was not evidently observed in the 48Ca-induced reactions in previous studies. The cross sections of the 3𝑛 and 4 channels of the 242Pu+50Ti reaction of 0.32+0.34 −0.18 pb and 0.22+0.27 −0.15 pb, espectively, were measured at excitation energy of the 292Lv compound nucleus 𝐸*=41 MeV. The cross section of the 4𝑛 -evaporation channel of the 238U+54Cr reaction, leading to the same compound nucleus, at 𝐸*=42 MeV of 32+46 −24 fb turned out to be approximately 15 times lower than the total cross section of the 242Pu+50Ti reaction at close excitation energy. Thus, for the first time, it was convincingly proved in an experiment that the reactions of isotopes of actinide elements with 50Ti are, by an order of magnitude, preferable to reactions with 54Cr for the synthesis of new elements 119 and 120.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10304 - Nuclear physics
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
PHYSICAL REVIEW C
ISSN
2469-9985
e-ISSN
2469-9993
Volume of the periodical
112
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
"014603-1"-"014603-10"
UT code for WoS article
001524282300003
EID of the result in the Scopus database
2-s2.0-105020643121