The synthesis of element 105

Флеров, Г.Н.; Oganesyan, Yu.Ts.; Lobanov, Yu. V.; Lazarev, Yu. A.; Tretyakova, S.P.; Kolesov, I. V.; Plotko, V.M.

doi:10.1007/bf01154430

Cited by 17 publications

(4 citation statements)

References 9 publications

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“…Transuranic actinides, including Pu, Am, and Cm, have been used for discovery research on elements 104 and 105 using actinide + 22 Ne reactions [11,15] and elements 114, 115, and 116 using actinide + 48 Ca [24][25][26]. These actinide isotopes generally have long half-lives (18.1y for 244 Cm, hundreds of years and greater for the others) and can be recovered and recycled after completion of an experiment.…”

Section: Plutonium Americium and Curiummentioning

confidence: 99%

“…The first super-heavy element, rutherfordium (Z = 104), was originally observed [11] at Dubna in 1964 using accelerator irradiation of a plutonium target with neon ions, with further work [12,13] at Dubna and Berkeley leading to formal acceptance as a new element. Dubnium (Z = 105) was produced [14,15] contemporaneously at Berkeley and Dubna in 1970, from nitrogen on californium and neon on americium, respectively. Berkeley used oxygen beams on californium to produce seaborgium (Z = 106) [16] in 1974 with contemporaneous work at Dubna [17].…”

Section: Introductionmentioning

confidence: 99%

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Actinide targets for the synthesis of super-heavy elements

et al. 2015

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Since 2000, six new super-heavy elements with atomic numbers 113 through 118 have been synthesized in hot fusion reactions of 48 Ca beams on actinide targets. These target materials, including 242 Pu, 244 Pu, 243 Am, 245 Cm, 248 Cm, 249 Cf, and 249 Bk, are available in very limited quantities and require specialized production and processing facilities resident in only a few research centers worldwide. This report describes the production and chemical processing of heavy actinide materials for super-heavy element research, current availabilities of these materials, and related target fabrication techniques. The impact of actinide materials in super-heavy element discovery is reviewed, and strategies for enhancing the production of rare actinides including 249 Bk, 251 Cf, and 254 Es are described.

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Section: Plutonium Americium and Curiummentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Actinide targets for the synthesis of super-heavy elements

et al. 2015

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“…Thirteen rutherfordium isotopes have been reported so far. In 1970, 260,261 Db was essentially discovered simultaneously in Dubna [5] and Berkeley [6] in the reactions of 249 Cf( 15 N,4n) 260 Ds at E lab = 85 MeV and 243 Am( 22 Ne, 4n) 261 Ds at E lab = 114 MeV. Up-to-now, eleven dubnium isotopes have been reported.…”

Section: Introductionmentioning

confidence: 99%

Prediction for the synthesis cross sections of new moscovium isotopes in fusion-evaporation reactions

Chen¹,

Wu²,

Yang³

et al. 2022

Preprint

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In the framework of the dinuclear system model, the synthesis mechanism of the superheavy nuclides with atomic number Z = 112, 114, 115 in the reactions of projectiles 40,48 Ca bombarding on targets 238 U, 242 Pu, and 243 Am at a wide incident energies (excitation energy from 0-100 MeV) have been investigated systematically. Based on the available experimental excitation functions, the dependence of calculated synthesis cross sections on collision orientations has been studied thoroughly. The TKEs of these collisions with the fixed collision orientation show its orientation dependence which can be used to predict the tendency of kinetic energy diffusion. The TKEs are dependent on incident energies which have been discussed. The method of Coulomb barrier distribution function has been applied in our calculations which could treat all of the collision orientations from the tip-tip to side-side approximately. The calculations of excitation functions of 48 Ca + 238 U, 48 Ca + 242 Pu, and 48 Ca + 243 Am have a nice agreement with the available experimental data. The isospin effect of projectiles on production cross sections of moscovium isotopes and the influence of entrance channel effect on the synthesis cross sections of superheavy nuclei have been discussed. The synthesis cross section of new moscovium isotopes 278−286 Mc have been predicted as large as hundreds pb, in the fusion-evaporation reactions of 35,37

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“…The element of rutherfordium (Rf, Z=104) was essentially discovered simultaneously in Dubna [3] and Berkeley [4] in the reactions 249 Cf( 12,13 C, 3-4n) 257,258,259 Rf. The element of dubium (Db, Z=105) was essentially produced simultaneously in Dubna [5] and Berkeley [6] in 249 Cf( 15 N,4n) 260 Db and 243 Am( 22 Ne, 4n) 261 Db. The element of seaborgium (Sg, Z=106) was essentially discovered at Berkeley [7] in 249 Cf( 18 O, 4n) 263 Sg.…”

Section: Introductionmentioning

confidence: 99%