References quoted in the ENSDF dataset: 264LR ADOPTED LEVELS

14 references found.

Clicking on a keynumber will list datasets that reference the given article.

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1985CW01

Nucl.Phys. A444, 1 (1985)

S.Cwiok, Z.Lojewski, V.V.Pashkevich

Fission Barriers of Odd-Mass Nuclei and Odd Nuclei with 100 ≤ Z ≤ 111

NUCLEAR STRUCTURE ^{259,261,257,255,253,251,249,247,245,243}Fm, ^{246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263}Md, ^{243,245,246,249,251,253,255,257,259,261,263}No, ^{254,255,256,257,258,259,260,261,262,263,264,265}Lr, ^{251,253,255,257,259,261,263,265}Rf, ^{254,255,256,257,258,259,260,261,262,263,264,265,266,267}Db, ^{257,259,261,263,265,267}Sg, ^{258,259,260,261,262,263,264,265,266,267,268,269,270,271}Bh, ^{259,261,263,265,267,269,271}Hs, ^{262,263,264,265,266,267,268,269,270,271}Mt, ^{263,265,267,269,271,273,275}Ds, ^{267,268,269,270,271,272,273,274,275,276,277,278}Rg; calculated deformation energy along fission barrier vs β₂, fission barrier vs neutron number. Strutinsky method, realistic Woods-Saxon potential.

doi: 10.1016/0375-9474(85)90288-X

2008DO12

Phys.Rev. C 77, 064310 (2008)

T.Dong, Z.Ren

Improved version of a binding energy formula for heavy and superheavy nuclei with Z≥ =90 and N ≥ =140

NUCLEAR STRUCTURE ^{231,232,233,234,235,236,237,238}Pa, ^{233,234,235,236,237,238,239,240,241,242}Np, ^{238,239,240,241,242,243,244,245,246}Am, ^{243,244,245,246,247,248,249,250,251}Bk, ^{251,252,253,254,255}Es; calculated binding energies. ^{241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260}Fm, ^{240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262}Md, ^{237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263,264}No, ^{246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263,264,265}Lr, ^{242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263,264,265,266}Rf, ^{252,253,254,255,256,257,258,259,260,261,262,263,264,265,266,267}Db, ^{248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263,264,265,266,267}Sg, ^{258,259,260,261,262,263,264,265,266,267}Bh, ^{255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270}Hs, ^{264,265,266,267,268,269,270,271}Mt, ^{260,261,262,263,264,265,266,267,268,269,270}Ds; calculated Q_α, half-life, single particle binding energies, separation energies.

doi: 10.1103/PhysRevC.77.064310

2011SA40

Phys.Rev. C 84, 024609 (2011)

K.P.Santhosh, B.Priyanka, J.G.Joseph, S.Sahadevan

α decay chains in ^271-294115 superheavy nuclei

RADIOACTIVITY ^{271,272,273,274,275,276,277,278,279,280,281,282,283,284,285,286,287,288,289,290,291,292,293,294}Mc, ^{267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282,283,284,285,286,287,288,289,290}Nh, ^{263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282,283,284,285,286}Rg, ^{259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282}Mt, ^{255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278}Bh, ^{251,252,253,254,255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,274}Db, ^{247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270}Lr, ^{243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263,264,265,266}Md, ^{239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262}Es, ^{235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258}Bk, ^{231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254}Am, ^{227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250}Np(α), (SF); calculated half-lives, Q_α in the framework of Coulomb and proximity potential model for deformed nuclei (CPPMDN). Comparison with experimental data.

doi: 10.1103/PhysRevC.84.024609

2016SA53

Phys.Rev. C 94, 054621 (2016)

K.P.Santhosh, C.Nithya

Theoretical studies on the modes of decay of superheavy nuclei

RADIOACTIVITY ²³²Th, ^234,236,238U, ^{236,238,240,242,244,246}Pu, ^{240,242,244,246,248,250}Cm, ^{242,244,246,248,250,252}Cf, ^{246,248,250,252,254,256}Fm, ^252,254,256No, ^{254,256,258,260,262}Rf, ^{258,260,262,264,266}Sg, ^{258,260,262,264,266,268,270,272,274,276,278,280}Hs, ^{264,266,268,270,272,274,276,278,280,282,284}Ds, ^{270,272,274,276,278,280,282,284,286}Cn, ^{274,276,278,280,282,284,286,288}Fl, ^{284,286,288,290,292,294,296,298,300,302,304}Lv, ^{288,290,292,294,296,298,300,302,304}Og, ^{292,294,296,298,300,302,304,306}120(SF); calculated half-lives. ^265,267Rf, ^{266,267,268,270}Db, ^269,271Sg, ^{270,271,272,274}Bh, ^273,275,277Hs, ^{274,275,276,277,278}Mt, ^277,278,281Ds, ^{278,279,280,281,282}Rg, ^{281,282,283,284,285}Cn, ^{282,283,284,285,286}Nh, ^{285,286,287,288,289}Fl, ^{287,288,289,290}Mc, ^{290,291,292,293}Lv, ^293,294Ts, ²⁹⁴Og(α), (SF); calculated half-lives and predicted dominant decay mode. Coulomb and proximity potential model for deformed nuclei (CPPMDN). Comparison with several other theoretical calculations, and available experimental values.

doi: 10.1103/PhysRevC.94.054621

2017SA29

Phys.Rev. C 95, 054621 (2017)

K.P.Santhosh, C.Nithya

α-decay chains of the superheavy nuclei ^255-350Rg

NUCLEAR STRUCTURE ^{255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,273}Rg; calculated S(p), S(2p); deduced negative S(p), thus decay through proton emission.

RADIOACTIVITY ^{272,274,275,276,277,278,279,280,281,282}Rg, ^{268,270,271,272,273,274,275,276,277,278}Mt, ^{264,266,267,268,269,270,271,272,273,274}Bh, ^{260,262,263,264,265,266,267,268,269,270}Db, ^{256,258,260,261,262,263,264,265,266}Lr, ^{252,254,255,256,257,258,259,260,261,262}Md, ^{248,250,251,252,253,254,255,256,257,258}Es, ^{244,246,247,248,249,250,251,252,253,254}Bk, ^{240,242,243,244,245,246,247,248,249,250}Am(α), (SF); calculated half-lives for α and SF decays using Coulomb and proximity potential model for deformed nuclei (CPPMDN). Comparison with other theoretical and empirical calculations, and with available experimental data. A=283-345, Z=111; decay by SF mode. A=346-350, Z=111; stable against α decay.

doi: 10.1103/PhysRevC.95.054621

2017SA63

Phys.Rev. C 96, 044613 (2017)

K.P.Santhosh, C.Nithya

α-decay chains of superheavy ^265-279Mt isotopes

RADIOACTIVITY ^{266,268,270,274,275,276,277,278}Mt, ^{262,264,266,270,271,272,274}Bh, ^{258,260,262,266,267,268,270}Db, ^256,258Lr, ²⁵⁴Md(α), (SF); ^{265,266,267,268,269,270,271,272,273,274,275,276,277,278}Mt, ^{261,262,263,264,265,266,267,268,269,270,271,272,273,274}Bh, ^{257,258,259,260,261,262,263,264,265,266,267,268,269,270}Db, ^{253,254,255,256,257,258,259,260,261,262,263,264,265,266}Lr, ^{249,250,251,252,253,254,255,256,257,258,259,260,261,262}Md, ^{245,246,247,248,249,250,251,252,253,254,255,256,257,258}Es, ^{241,242,243,244,245,246,247,248,249,250,251,252,253,254}Bk, ^{237,238,239,240,241,242,243,244,245,246,247,248,249,250}Am, ^{233,234,235,236,237,238,239,240,241,242,243,244,245,246}Np, ^{229,230,231,232,233,234,235,236,237,238,239,240,241,242}Pa, ^{225,226,227,228,229,230,231,232,233,234,235,236,237,238}Ac(α), (SF); calculated half-lives for α and SF decays using Coulomb and proximity potential model for deformed nuclei (CPPMDN) for α decays and shell-effect-dependent formula for SF half-lives. Comparison with available experimental values, and with several other theoretical calculations.

doi: 10.1103/PhysRevC.96.044613

2019IS06

J.Phys.(London) G46, 075105 (2019)

M.Ismail, A.Adel

α-decay chains and cluster radioactivity of ^295-299119 and ^298-302120 isotopes using zero- and finite-range NN interactions

RADIOACTIVITY ²⁹⁵119, ²⁹¹Ts, ²⁸⁷Mc, ²⁸³Nh, ²⁷⁹Rg, ²⁷⁵Mt, ²⁷¹Bh, ²⁶⁷Db, ²⁶³Lr, ²⁵⁹Md, ²⁹⁶119, ²⁹²Ts, ²⁸⁸Mc, ²⁸⁴Nh, ²⁸⁰Rg, ²⁷⁶Mt, ²⁷²Bh, ²⁶⁸Db, ²⁶⁴Lr, ²⁶⁰Md, ²⁹⁷119, ²⁹³Ts, ²⁸⁹Mc, ²⁸⁵Nh, ²⁸¹Rg, ²⁷⁷Mt, ²⁷³Bh, ²⁶⁹Db, ²⁶⁵Lr, ²⁶¹Md, ²⁹⁸119, ²⁹⁴Ts, ²⁹⁰Mc, ²⁸⁶Nh, ²⁸¹Rg, ²⁷⁸Mt, ²⁷⁴Bh, ²⁷⁰Db, ²⁶⁶Lr, ²⁶²Md, ²⁹⁹119, ²⁹⁵Ts, ²⁹¹Mc, ²⁸⁷Nh, ²⁸³Rg, ²⁷⁹Mt, ²⁷⁵Bh, ²⁷¹Db, ²⁶⁷Lr, ²⁶³Md, ²⁹⁸120, ²⁹⁴Og, ²⁹⁰Lv, ²⁸⁶Fl, ²⁸²Cn, ²⁷⁸Ds, ²⁷⁴Hs, ²⁷⁰Sg, ²⁶⁶Rf, ²⁶²No, ²⁹⁹120, ²⁹⁵Og, ²⁹¹Lv, ²⁸⁷Fl, ²⁸³Cn, ²⁷⁹Ds, ²⁷⁵Hs, ²⁷¹Sg, ²⁶⁷Rf, ²⁶³No, ³⁰⁰120, ²⁹⁶Og, ²⁹²Lv, ²⁸⁸Fl, ²⁸⁴Cn, ²⁸⁰Ds, ²⁷⁶Hs, ²⁷²Sg, ²⁶⁸Rf, ²⁶⁴No, ³⁰¹120, ²⁹⁷Og, ²⁹³Lv, ²⁸⁹Fl, ²⁸⁵Cn, ²⁸¹Ds, ²⁷⁷Hs, ²⁷³Sg, ²⁶⁹Rf, ²⁶⁵No, ³⁰²120, ²⁹⁸Og, ²⁹⁴Lv, ²⁹⁰Fl, ²⁸⁶Cn, ²⁸²Ds, ²⁷⁸Hs, ²⁷⁴Sg, ²⁷⁰Rf, ²⁶⁶No(α); calculated T_1/2. Comparison with available data.

doi: 10.1088/1361-6471/ab1c28

2019MO01

At.Data Nucl.Data Tables 125, 1 (2019)

P.Moller, M.R.Mumpower, T.Kawano, W.D.Myers

Nuclear properties for astrophysical and radioactive-ion-beam applications (II)

NUCLEAR STRUCTURE Z=8-136; calculated the ground-state odd-proton and odd-neutron spins and parities, proton and neutron pairing gaps, one- and two-neutron separation energies, quantities related to β-delayed one- and two-neutron emission probabilities, average energy and average number of emitted neutrons, β-decay energy release and T_1/2 with respect to Gamow-Teller decay with a phenomenological treatment of first-forbidden decays, one- and two-proton separation energies, and α-decay energy release and half-life.

doi: 10.1016/j.adt.2018.03.003

2019SR04

Pramana 93, 81 (2019)

G.R.Sridhara, H.C.Manjunatha, K.N.Sridhar, H.B.Ramalingam

Systematic study of the α decay properties of actinides

RADIOACTIVITY ^{211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238}Ac, ^{214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236}Th, ^{217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240}Pa, ^{219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245}U, ^{221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245}Np, ^{228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245}Pu, ^{228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250}Am, ^{233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251}Cm, ²⁵⁵Cm, ^{234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252}Bk, ^{238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255}Cf, ^{241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258}Es, ^{243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258}Fm, ^{246,247,248,249,250,251,252,253,254,255,256,257,258,259}Md, ^{246,247,248,249,250,251,252,253,254,255,256,257,258,259,260}No, ^{251,252,253,254,255,256,257,258,259,260,261,262}Lr(α); calculated T_1/2. Comparison with available data.

RADIOACTIVITY ²¹⁰Ac, ^{200,201,202,203,204,205,206,207,208,209,210,211,212,213}Th, ^{200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216}Pa, ^{210,211,212,213,214,215,216,217,218}U, ^{215,216,217,218,219,220}Np, ^{220,221,222,223,224,225,226,227}Pu, ^226,227Am, ^252,253,254Cm, ^{230,231,232,233}Bk, ^253,254,255Bk, ^{230,231,232,233,234,235,236,237}Cf, ^{235,236,237,238,239,240}Es, ^259,260Es, ^{235,236,237,238,239,240,241,242}Fm, ^259,260Fm, ^{240,241,242,243,244,245}Md, ²⁶⁰Md, ²⁴⁵No, ^{261,262,263,264,265}No, ^{245,246,247,248,249,250}Lr, ^263,264,265Lr(SF); calculated T_1/2. Comparison with available data.

doi: 10.1007/s12043-019-1845-9

2020IS03

Phys.Rev. C 101, 024607 (2020)

M.Ismail, A.Adel

Prediction of α-decay chains and cluster radioactivity of ^300-304121 and ^302-306122 isotopes using the double-folding potential

RADIOACTIVITY ^{300,301,302,303,304}121, ^{296,297,298,299,300}119, ^{292,293,294,295,296}Ts, ^{288,289,290,291,292}Mc, ^{284,285,286,287,288}Nh, ^{280,281,282,283,284}Rg, ^{276,277,278,279,280}Mt, ^{272,273,274,275,276}Bh, ^{268,269,270,271,272}Db, ^{264,265,266,267,268}Lr(α); ^{302,303,304,305,306}122, ^{298,299,300,301,302}120, ^{294,295,296,297,298}Og, ^{290,291,292,293,294}Lv, ^{286,287,288,289,290}Fl, ^{282,283,284,285,286}Cn, ^{278,279,280,281,282}Ds, ^{274,275,276,277,278}Hs, ^{270,271,272,273,274}Sg, ^{266,267,268,269,270}Rf(α); calculated α-decay half-lives using the density-dependent cluster model, with the α-nucleus potential from the double-folding model with a realistic NN interaction. Comparison with three semiempirical formulas: the Viola-Seaborg-Sobiczewski formula, the modified Brown formula, and the one based on fission theory. N=165-177; compared theoretical and experimental α-decay half-lives. N=288-342, Z=121; N=292-342, Z=122; calculated correlation between the logarithm of the α-preformation factor, S_α, and the fragmentation potential for odd-odd Z=121 and even-even Z=122 nuclei. ³⁰⁰121, ³⁰²122(α), (¹⁶O), (²⁸Mg), (³²Si), (⁶⁸Ni), (⁷⁶Zn), (⁷⁹Ga), (⁸⁰Ge), (⁸³As), (⁸⁴Se), (⁸⁵Br), (⁸⁶Kr), (⁸⁹Rb), (⁹⁰Sr), (⁹¹Sr), (⁹²Sr), (⁹³Sr), (⁹⁴Sr), (⁹⁶Y), (⁹⁶Zr), (⁹⁹Nb), (¹⁰²Mo); calculated Q values, α-decay and cluster decay half-lives within the double-folding model based on M3Y-Paris NN interaction, unified formula (UF), Horai's scaling law, and the universal decay law (UDL).

doi: 10.1103/PhysRevC.101.024607

2020SI27

Nucl.Phys. A1004, 122035 (2020)

U.K.Singh, P.K.Sharma, M.Kaushik, S.K.Jain, D.T.Akrawy, G.Saxena

Study of decay modes in transfermium isotopes

RADIOACTIVITY ^{245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260}Md, ^{250,251,252,253,254,255,256,257,258,259,260,261,262}No, ^{252,253,254,255,256,257,258,259,260,261,262,263,264,265,266}Lr, ^{253,254,255,256,257,258,259,260,261,262,263,264,265}Rf, ^{255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270}Db, ^{258,259,260,261,262,263,264,265,266,267,268,269,270,271}Sg, ^{260,261,262,263,264,265,266,267,268,269,270,271,272,273,274}Bh, ^{263,264,265,266,267,268,269,270,271,272,273,274,275,276,277}Hs, ^{266,267,268,269,270,271,272,273,274,275,276,277,278}Mt(EC), (β^-), (α), (SF); calculated T_1/2. Comparison with available data.

doi: 10.1016/j.nuclphysa.2020.122035

2021SI02

Nucl.Phys. A1006, 122066 (2021)

U.K.Singh, R.Sharma, P.K.Sharma, M.Kaushik, S.K.Jain, G.Saxena

Structural properties and α-decay chains of transfermium nuclei (101 ≤ Z ≤ 110)

RADIOACTIVITY ^{235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282,283,284,285,286,287}Md, ^{238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282,283,284,285,286,287,288}No, ^{241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282,283,284,285,286,287,288,289}Lr, ^{243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282,283,284,285,286,287,288,289,290}Rf, ^{245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282,283,284,285,286,287,288,289,290,291}Db, ^{248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282,283,284,285,286,287,288,289,290,291,292}Sg, ^{250,251,252,253,254,255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282,283,284,285,286,287,288,289,290,291,292,293}Bh, ^{253,254,255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282,283,284,285,286,287,288,289,290,291,292,293,294}Hs, ^{255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282,283,284,285,286,287,288,289,290,291,292,293,294,295}Mt, ^{255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282,283,284,285,286,287,288,289,290,291,292,293,294,295,296}Ds(α), (SF); calculated potential energy surfaces (PESs), occupancies of neutron single particle states, rms α-decay T_1/2, T_1/2. Comparison with available data.

doi: 10.1016/j.nuclphysa.2020.122066

2021WA16

Chin.Phys.C 45, 030003 (2021)

M.Wang, W.J.Huang, F.G.Kondev, G.Audi, S.Naimi

The AME 2020 atomic mass evaluation (II). Tables, graphs and references

ATOMIC MASSES A=1-295; compiled, evaluated atomic masses, mass excess, β-, ββ and ββββ-decay, binding, neutron and proton separation energies, decay and reaction Q-value data.

doi: 10.1088/1674-1137/abddaf

2022OG07

Phys.Rev. C 106, L031301 (2022)

Yu.Ts.Oganessian, V.K.Utyonkov, N.D.Kovrizhnykh, F.Sh.Abdullin, S.N.Dmitriev, D.Ibadullayev, M.G.Itkis, D.A.Kuznetsov, O.V.Petrushkin, A.V.Podshibiakin, A.N.Polyakov, A.G.Popeko, R.N.Sagaidak, L.Schlattauer, I.V.Shirokovski, V.D.Shubin, M.V.Shumeiko, D.I.Solovyev, Yu.S.Tsyganov, A.A.Voinov, V.G.Subbotin, A.Yu.Bodrov, A.V.Sabelnikov, A.V.Khalkin, V.B.Zlokazov, K.P.Rykaczewski, T.T.King, J.B.Roberto, N.T.Brewer, R.K.Grzywacz, Z.G.Gan, Z.Y.Zhang, M.H.Huang, H.B.Yang

First experiment at the Super Heavy Element Factory: High cross section of ²⁸⁸Mc in the ²⁴³Am + ⁴⁸Ca reaction and identification of the new isotope ²⁶⁴Lr

NUCLEAR REACTIONS ²⁴³Am(⁴⁸Ca, 2n)²⁸⁹Mc, (⁴⁸Ca, 3n)²⁸⁸Mc, (⁴⁸Ca, 4n), E=239.1, 240.9, 243.9 MeV; measured evaporation residues (ER), α, and fission fragments (SF), (ER)α-coin, αα-coin, α(SF)-coin, ER(SF)-coin, production σ(E) for superheavy nuclei using gas-filled separator DGFRS-2, two double-sided strip detectors (DSSD), two multiwire proportional chambers (MWPC) at the DC280 cyclotron facility of the Super Heavy Element Factory of JINR-Dubna.

RADIOACTIVITY ^288,289Mc, ^284,285Nh, ^280,281Rg, ²⁷⁶Mt, ²⁷²Bh, ²⁶⁸Db(α); ²⁸¹Rg, ²⁷⁷Mt, ²⁶⁸Db, ²⁶⁴Lr(SF)[from ²⁴³Am(⁴⁸Ca, xn)]; measured Eα, E_SF, (ER)α-coin, αα-coin, α(SF)-coin, ER(SF)-coin, T_1/2. ²⁶⁸Db; deduced α/SF branching ratio. ²⁶⁴Lr; deduced new isotope, T_1/2, average decay properties. ²⁸⁸Mc, ²⁸⁴Nh(EC), (β⁺); discussed upper limit for decay mode. History of 55 correlated events observed for ²⁸⁸Mc and six for ²⁸⁹Mc is listed by authors in the Supplemental material of the paper.

doi: 10.1103/PhysRevC.106.L031301