Investigation of reactions with 50Ti and 54Cr for the synthesis of new elements

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Investigation of reactions with 50Ti and 54Cr for the synthesis of new elements

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Investigation of reactions with 50Ti and 54Cr for the synthesis of new elements

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

PHYSICAL REVIEW C

ISSN

2469-9985

e-ISSN

2469-9993

Svazek periodika

112

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

"014603-1"-"014603-10"

Kód UT WoS článku

001524282300003

EID výsledku v databázi Scopus

2-s2.0-105020643121