References quoted in the ENSDF dataset: 249NO ADOPTED LEVELS

26 references found.

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

Return to ADOPTED LEVELS

1978PO09

Nukleonika 23, 125 (1978)

K.Pomorski

Spontaneous Fission Half Lives for Odd A Nuclei with Z ≥ 96

RADIOACTIVITY ²⁴³Md, ²⁴²Fm, ²⁵⁹Rf(SF); calculated fission barriers, effective mass parameters. ²⁵⁹Rf, ²⁶¹Db(SF), ^{240,242,244,246,248,250,252,241,243,245,247,249,251,253}Cm, ^{243,245,247,249,251,253,255}Bk, ^{244,245,246,247,248,249,250,251,252,253,254,255}Cf, ^{242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258}Fm, ^{248,249,250,251,252,253,254,255,256,257,258,259,260}No, ^{251,253,255,257,259,261}Lr, ²⁵⁰Rf, ²⁵¹Rf, ²⁵²Rf, ²⁵³Rf, ²⁵⁴Rf, ²⁵⁵Rf, ²⁵⁶Rf, ²⁵⁷Rf, ²⁵⁸Rf, ²⁶⁰Rf, ²⁶¹Rf, ²⁶²Rf, ²⁵⁶Sg, ²⁵⁷Sg, ²⁵⁸Sg, ²⁵⁹Sg, ²⁶⁰Sg, ²⁶¹Sg, ²⁶²Rf, ²⁶³Sg, ²⁶⁴Sg, ²⁶⁰Hs, ²⁶¹Hs, ²⁶²Hs, ²⁶³Hs, ²⁶⁴Hs, ²⁶⁵Hs, ²⁶⁶Hs(SF); calculated T_1/2.

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

2003BE18

Eur.Phys.J. A 16, 447 (2003)

A.V.Belozerov, M.L.Chelnokov, V.I.Chepigin, T.P.Drobina, V.A.Gorshkov, A.P.Kabachenko, O.N.Malyshev, I.M.Merkin, Yu.Ts.Oganessian, A.G.Popeko, R.N.Sagaidak, A.I.Svirikhin, A.V.Yeremin, G.Berek, I.Brida, S.Saro

Spontaneous-fission decay properties and production cross-sections for the neutron-deficient nobelium isotopes formed in the ^{44, 48}Ca + ^{204, 206, 208}Pb reactions

NUCLEAR REACTIONS ²⁰⁸Pb(⁴⁴Ca, 2n), (⁴⁴Ca, 3n), (⁴⁸Ca, 2n), (⁴⁸Ca, 3n), (⁴⁸Ca, 4n), E ≈ 200-240 MeV; ²⁰⁶Pb(⁴⁸Ca, n), (⁴⁸Ca, 2n), (⁴⁸Ca, 3n), (⁴⁸Ca, 4n), E ≈ 200-240 MeV; ²⁰⁴Pb(⁴⁸Ca, 2n), (⁴⁸Ca, 3n), E ≈ 200-240 MeV; measured σ. Mass separator, comparison with previous results and statistical model predictions.

RADIOACTIVITY ^{248,249,250,252}No(SF), (α) [from ^204,206,208Pb(^44,46,48Ca, xn)]; measured fission T_1/2, α-branching ratios. Comparison with model predictions.

doi: 10.1140/epja/i2002-10109-6

2003PO08

Nucl.Instrum.Methods Phys.Res. A510, 371 (2003)

A.G.Popeko, O.N.Malyshev, A.V.Yeremin, A.V.Belozerov, M.L.Chelnokov, V.I.Chepigin, V.A.Gorshkov, M.G.Itkis, A.P.Kabachenko, Yu.Ts.Oganessian, R.N.Sagaidak, A.V.Shutov, A.I.Svirikhin

In-beam separation and mass determination of superheavy nuclei. Part I

NUCLEAR REACTIONS ¹⁶⁴Dy(⁴⁰Ar, 6n), E not given; ²⁰⁸Pb(⁴⁰Ar, 2n), E not given; measured fragment yields. ²⁰⁴Pb(⁴⁸Ca, X), ²⁰⁸Pb(⁴⁴Ca, X), E not given; measured (recoil)(decay)-coin; deduced evidence for ^249,250No.

RADIOACTIVITY ^249,250No [from ²⁰⁴Pb(⁴⁸Ca, X), ²⁰⁸Pb(⁴⁴Ca, X)]; measured T_1/2.

doi: 10.1016/S0168-9002(03)01823-0

2003YE02

Yad.Fiz. 66, 1078 (2003); Phys.Atomic Nuclei 66, 1042 (2003)

A.V.Yeremin, A.V.Belozerov, M.L.Chelnokov, V.I.Chepigin, V.A.Gorshkov, A.P.Kabachenko, O.N.Malyshev, Yu.Ts.Oganessian, A.G.Popeko, R.N.Sagaidak, A.I.Svirikhin, S.Hofmann, G.Berek, I.Brida, S.Saro

The Upgrade of the Kinematic Separator VASSILISSA-Experimental Results and Plans

NUCLEAR REACTIONS ²⁰⁸Pb(¹⁶O, xn), ¹⁹⁷Au, ²⁰⁸Pb, ²³²Th(²⁰Ne, xn), ¹⁹⁰Os, ^194,196,198Pt, ¹⁹⁷Au, ²⁰⁵Tl, ²⁰⁸Pb, ²⁰⁹Bi, ²³²Th, ^236,238U(²²Ne, xn), ¹⁸¹Ta, ¹⁹⁷Au, ²⁰⁸Pb(²⁴Mg, xn), ¹⁸¹Ta, ¹⁹⁷Au, ^207,208Pb, ²³²Th(²⁶Mg, xn), ¹⁷⁵Lu, ¹⁹⁷Au, ²³²Th, ²³⁸U(²⁷Al, xn), ¹⁶⁹Tm, ¹⁸¹Ta, ²³²Th(³¹P, xn), ¹⁷⁵Lu(³⁵Cl, xn), ¹⁵⁹Tb, ¹⁶⁵Ho, ¹⁸²W(⁴⁰Ar, xn), ^151,153Eu, ¹⁵⁹Tb(⁴⁰Ca, xn), ²⁰⁸Pb(⁴⁴Ca, xn), ^174,176Yb, ^204,206,208Pb, ²³²Th, ²³⁹U, ²⁴²Pu(⁴⁸Ca, xn), E^*=20-140 MeV; measured excitation functions; deduced maximum σ.

RADIOACTIVITY ^249,250No(α), (SF); measured T_1/2, α-branching ratio. ²⁴⁸No(α); measured T_1/2 lower limit.

doi: 10.1134/1.1586416

2005PA73

Acta Phys.Pol. B36, 3115 (2005)

A.Parkhomenko, A.Sobiczewski

Neutron one-quasiparticle states of heaviest nuclei

NUCLEAR STRUCTURE ²³⁵Th, ^237,239U, ^{239,241,243,245,247,249}Pu, ^{241,243,245,247,249,251,253}Cm, ^{243,245,247,249,251,253,255,257}Cf, ^{245,247,249,251,253,255,257,259,261}Fm, ^{247,249,251,253,255,257,259,261,263}No, ^{251,253,255,257,259,261,263,265}Rf, ^{253,255,257,259,261,263,265,267}Sg, ^{261,263,265,267,269}Hs, ^267,269,271Ds; calculated neutron single-quasiparticle energies. Macroscopic-microscopic approach.

2006PE17

Phys.Rev. C 74, 014316 (2006)

D.Peterson, B.B.Back, R.V.F.Janssens, T.L.Khoo, C.J.Lister, D.Seweryniak, I.Ahmad, M.P.Carpenter, C.N.Davids, A.A.Hecht, C.L.Jiang, T.Lauritsen, X.Wang, S.Zhu, F.G.Kondev, A.Heinz, J.Qian, R.Winkler, P.Chowdhury, S.K.Tandel, U.S.Tandel

Decay modes of ²⁵⁰No

RADIOACTIVITY ²⁵⁰No(SF) [from ²⁰⁴Pb(⁴⁸Ca, 2n)]; measured T_1/2 for ground and isomeric state decay; deduced upper limit for α-decay branching ratio. ^219,220Th(α) [from ¹⁷⁶Yb(⁴⁸Ca, xn)]; measured T_1/2.

doi: 10.1103/PhysRevC.74.014316

2006SH19

Phys.Rev. C 74, 034316 (2006)

T.M.Shneidman, G.G.Adamian, N.V.Antonenko, R.V.Jolos

Possible alternative parity bands in the heaviest nuclei

NUCLEAR STRUCTURE ^239,240U, ^{241,242,243,244,245}Pu, ^{243,244,245,246,247,248}Cm, ^{245,246,247,248,249,250}Cf, ^{247,248,249,250,251,252}Fm, ^{249,250,251,252,253,254}No, ^{253,254,255,256}Rf, ²⁵⁸Sg; calculated levels, J, π, rotational bands, transition dipole and quadrupole moments. Cluster model.

doi: 10.1103/PhysRevC.74.034316

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

2011AD15

Phys.Rev. C 84, 024324 (2011)

G.G.Adamian, N.V.Antonenko, S.N.Kuklin, B.N.Lu, L.A.Malov, S.G.Zhou

Behavior of one-quasiparticle levels in odd isotonic chains of heavy nuclei

NUCLEAR STRUCTURE ²⁵⁵Fm, ²⁵⁷No, ²⁵⁹Rf, ²⁶¹Sg, ²⁶³Hs; calculated ground state deformation parameters β₂ and β₄. ²³⁹U, ^241,243,247Pu, ^{243,245,247,249}Cm, ^{243,245,247,249,251}Cf, ^{241,243,245,247,249,251,253,255}Fm, ^{245,247,249,251,253,255,257}No, ^255,257,259Rf, ^259,261Sg, ²⁶³Hs; calculated one-quasiparticle states in N=147, 149, 151, 153, 155 nuclei. ²⁵³No; calculated collective rotational bands. Discussed isomers in odd-A Fm and No nuclei. Two-center shell model (TCSM), quasiparticle-phonon model (QPM), Skyrme-Hartree-Fock-Bogolyubov (SHFB) approach with SLy4 and SkP parameterization. Comparison with experimental data.

RADIOACTIVITY ^257,257mRf, ^257,257mNo(α); calculated Q(α), decay schemes. ²⁵³Fm, ²⁵³No; deduced levels.

doi: 10.1103/PhysRevC.84.024324

2012JI07

Phys.Rev. C 85, 054303 (2012)

H.Jiang, G.J.Fu, B.Sun, M.Liu, N.Wang, M.Wang, Y.G.Ma, C.J.Lin, Y.M.Zhao, Y.H.Zhang, Z.Ren, A.Arima

Predictions of unknown masses and their applications

ATOMIC MASSES Z=1-184, N=1-184; analyzed masses for 1566 nuclei using extrapolation approach and shell correction term, S(n), S(2n), S(p), and S(2p); one-neutron and one-proton drip nuclei, R-process nucleosynthesis and astrophysical implications. Comparison with AME-2011 interim mass evaluation, and with Duflo-Zuker model. ⁸⁵Mo, ^87,88,89Tc, ¹²³Ag, ¹⁴⁰I, ²²²Po, ^226,227,228Rn, ^233,234Ra, ²³⁵Ac; compared predicted masses with measured values.

RADIOACTIVITY ^{248,249,250,251,252,253,254,255,256,257}No, ^{251,252,253,254,255,256,257,258,259}Lr, ^{253,254,255,256,257,258,259,260,261}Rf, ^{255,256,257,258,259,260,261,262}Db, ^{256,257,258,259,260,261,262,263}Sg(α); calculated Q(α), half-life. Comparison with experimental data.

doi: 10.1103/PhysRevC.85.054303

2012ZH01

Phys.Rev. C 85, 014324 (2012)

Z.-H.Zhang, X.-T.He, J.-Y.Zeng, E.-G.Zhao, S.-G.Zhou

Systematic investigation of the rotational bands in nuclei with Z ≈ 100 using a particle-number conserving method based on a cranked shell model

NUCLEAR STRUCTURE ^{240,242,244,246,248,250,252}Cm, ^{242,244,246,248,250,252,254}Cf, ^{244,246,248,250,252,254,256}Fm, ^{246,248,250,252,254,256,258}No, ²⁵⁰Bk; calculated quadrupole deformation parameters β₂, β₄, moment of inertia plots, alignments, occupation probabilities, contribution of neutron and proton major shells to angular momentum alignments. ²⁴⁵Cm, ²⁵⁰Fm; calculated energies of Nilsson orbitals. ^{241,243,245,247,249}Cm, ^{243,245,247,249,251}Cf, ^{245,247,249,251,253}Fm, ^{247,249,251,253,255}No, ^{243,245,247,249,251}Bk, ^{245,247,249,251,253}Es, ^{247,249,251,253,255}Md, ²⁵⁵Lr; calculated bandhead energies of low-lying one-quasiparticle bands, moments of inertia plots of g.s. and excited bands, alignments, occupation probabilities, contribution of neutron and proton major shells to angular momentum alignments. Cranked shell model (CSM), particle-number conserving (PNC) method. Comparison with experimental data.

doi: 10.1103/PhysRevC.85.014324

2017SV02

Phys.Part. and Nucl.Lett. 14, 571 (2017)

A.I.Svirikhin, A.V.Andreev, A.V.Yeremin, I.N.Izosimov, A.V.Isaev, A.N.Kuznetsov, A.A.Kuznetsova, O.N.Malyshev, A.G.Popeko, Y.A.Popov, E.A.Sokol, M.L.Chelnokov, V.I.Chepigin, T.M.Schneidman, B.Gall, O.Dorvaux, P.Brione, K.Hauschild, A.Lopez-Martens, K.Rezynkina, S.Mullins, P.Jones, P.Mosat

Characteristics of spontaneous fission of ²⁵⁰No

NUCLEAR REACTIONS ²⁰⁴Pb(⁴⁸Ca, xn), E=410-470 MeV; measured neutrons, fission fragments kinetic energy, TKEL, short-lived fragments; deduced σ vs E. ²⁵⁰No(SF), SF T_1/2, average neutron multiplicity separately for each T_1/2. ^{236,238,240,242,244}Pu, ^{242,244,246,248,250}Cm, ²⁴⁹Bk, ^{246,250,252,254}Cf, ^{244,246,254,256,258}Fm, ^250,250m,252No, ²⁵⁶Rf, ^258,260Md, ²⁶⁸Db; deduced, compiled systematics of average neutron multiplicity from SF (Spontaneous Fission) vs nucleus.

doi: 10.1134/S1547477117040161

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

2021JI04

Phys.Rev. C 103, 024314 (2021)

J.Jia, Y.Qian, Z.Ren

Systematics of α-decay energies in the valence correlation scheme

RADIOACTIVITY ^{248,249,250,251,252,253,254,255,256}No, ^{251,252,253,254,255,256,257,258,259}Lr, ^{253,254,255,256,257,258}Rf, ^277,285Cn, ^284,285,286Nh, ^{284,285,286,287,288,289}Fl, ^{287,288,289,290}Mc, ^{290,291,292,293}Lv, ^293,294Ts, ²⁹⁴Og(α); calculated Q(α) from analysis of evaluated Q(α) data for Z=52-118 nuclei in AME2016 using a simple valence correlation scheme (VCS), and compared with available experimental data.

doi: 10.1103/PhysRevC.103.024314

2021KH07

Phys.Rev. C 104, L031303 (2021)

J.Khuyagbaatar, H.Brand, R.A.Cantemir, Ch.E.Dullmann, F.P.Hessberger, E.Jager, B.Kindler, J.Krier, N.Kurz, B.Lommel, B.Schausten, A.Yakushev

Spontaneous fission instability of the neutron-deficient No and Rf isotopes: The new isotope ²⁴⁹No

RADIOACTIVITY ^253,253mRf(SF); ²⁵³Rf, ²⁴⁹No(α)[²⁵³Rf from ²⁰⁴Pb(⁵⁰Ti, n), E=234.3 MeV]; measured evaporation residues (ERs), (ER)(fission)- and (ER)α-correlated events, Eα, Iα, partial half-lives of two fission activities of ²⁵³Rf, α-decay half-life of newly discovered ²⁴⁹No isotope from the α decay mode of ²⁵³Rf in (ER)-α-α-α correlated events using gas-filled TransActinide Separator and Chemistry Apparatus (TASCA) at UNILAC, GSI. ²⁵³Rf; deduced another high-lying ≈0.6-μs isomer. ^251mNo; discussed in Supplemental Material of the paper a possible identification method for direct fission from an isomeric state in ²⁵¹No. Presence of two fission activities in ²⁵³Rf proposed as benchmark cases for the theoretical description of the influence of single-particle orbitals on the fission process.

doi: 10.1103/PhysRevC.104.L031303

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

2021SV02

Phys.Part. and Nucl.Lett. 18, 445 (2021)

A.I.Svirikhin, A.V.Yeremin, N.I.Zamyatin, I.N.Izosimov, A.V.Isaev, A.A.Kuznetsova, O.N.Malyshev, R.S.Mukhin, A.G.Popeko, Y.A.Popov, E.A.Sokol, B.Sailaubekov, M.S.Tezekbayeva, M.L.Chelnokov, V.I.Chepigin, B.Andel, S.Antalic, A.Bronis, P.Mosat, B.Gall, O.Dorvaux, A.Lopez-Martens, K.Hauschild

The New ²⁴⁹No Isotope

RADIOACTIVITY ²⁴⁹No, ²⁴⁵Fm(α) [from ²⁰⁴Pb(⁴⁸Ca, X), E=225.4 MeV]; measured decay products, Eα, Iα; deduced Q-values, T_1/2, an upper limit on the fission branch. Comparison with available data. SHELS separator using the GABRIELA detector array.

doi: 10.1134/s1547477121040154

2021TE08

Bull.Rus.Acad.Sci.Phys. 85, 1167 (2021)

M.S.Tezekbayeva, A.V.Yeremin, O.N.Malyshev, A.V.Isaev, R.S.Mukhin, A.A.Kuznetsova, A.G.Popeko, Yu.A.Popov, A.I.Svirikhin, E.A.Sokol, M.L.Chelnokov, V.I.Chepigin, A.Lopez-Martens, K.Hauschild, O.Dorvaux, B.Gall, B.S.Sailaubekov

Spectroscopy of the Decay Properties of Transfermium Isotopes in Dubna

RADIOACTIVITY ²⁵⁶Rf(α), (SF) [from ²⁰⁸Pb(⁵⁰Ti, 2n)²⁵⁶Rf, E not given]; ^{249,250,252,254}No(α) [from ^204,206,208Pb(⁴⁸Ca, X)²⁵²No/²⁵⁴No/²⁵⁶No, E not given]; measured decay products, Eα, Iα, Eγ, Iγ, Eβ, Iβ; deduced level energies, J, π, T_1/2. U-400 cyclotron at the Flerov Nuclear Reactions Laboratory of the Joint Institute for Nuclear Research and the SHELS kinematic separator.

doi: 10.3103/S1062873821100257

2021VL01

Int.J.Mod.Phys. E30, 2150025 (2021)

E.V.Vladimirova, B.S.Ishkhanov, M.V.Simonov, S.V.Sidorov, T.Yu.Tretyakova

Residual np-interaction and mass predictions in transfermium region

RADIOACTIVITY ^{246,247,248,249,250,251,252,253,254,255,256,257,258}Md, ^{248,249,250,251,252,253,254,255,256,257,258,259}No, ^{250,251,252,253,254,255,256,257,258,259,260}Lr, ^{252,253,254,255,256,257,258,259,260,261}Rf, ^{254,255,256,257,258,259,260,261,262}Db, ^{256,257,258,259,260,261,262,263}Sg(α); calculated T_1/2, Q-values. Comparison with available data.

doi: 10.1142/S0218301321500257

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

2022BA25

Phys.Atomic Nuclei 85, 275 (2022)

T.Bayram, A.Hayder

An Investigation on Decay Modes and Half-Life of Nobelium Isotopes

RADIOACTIVITY ^{247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263,264,265,266}No(α), (β^-), (β⁺), (EC), (SF); calculated T_1/2 using the utilization of the RMF model with density-dependent forces DD-PC1 and DD-ME2. Comparison with available data.

doi: 10.1134/S1063778822030048

2022LO03

Phys.Rev. C 105, L021306 (2022)

A.Lopez-Martens, K.Hauschild, A.I.Svirikhin, Z.Asfari, M.L.Chelnokov, V.I.Chepigin, O.Dorvaux, M.Forge, B.Gall, A.V.Isaev, I.N.Izosimov, K.Kessaci, A.A.Kuznetsova, O.N.Malyshev, R.S.Mukhin, A.G.Popeko, Yu.A.Popov, B.Sailaubekov, E.A.Sokol, M.S.Tezekbayeva, A.V.Yeremin

Fission properties of ²⁵³Rf and the stability of neutron-deficient Rf isotopes

RADIOACTIVITY ²⁵³Rf(SF)(α) [from ²⁰⁴Pb(⁵⁰Ti, n), E=244 MeV];²⁴⁹No(α)[from ²⁵³Rf(SF)(α)];²⁴⁵Fm(α)[from ²⁴⁹No(α)]; ²⁵¹No(SF)(α)[from ²⁰⁴Pb(⁴⁸Ca, n); measured fission fragments, Eγ, Iγ, Eα, Iα, (implant)α-coin, (implant)γ-coin. ²⁵³Rf; deduced levels, J, π, T_1/2 for two isomeric fissioning states, branching ratio for α-decay. ²⁵¹No; deduced T_1/2. ²⁵²Rf; deduced T_1/2 based on extracted hindrance factor and systematics. U400 Cyclotron at the Flerov Laboratory of Nuclear Reactions in Dubna with separator for heavy element spectroscopy (SHELS). GABRIELA detector consisting of DSSD and HPGe detectors.

NUCLEAR REACTIONS ²⁰⁴Pb(⁵⁰Ti, n), E=244 MeV; measured fission fragments from ²⁵³Rf decay, Eα, Iα; deduced σ.

doi: 10.1103/PhysRevC.105.L021306

2022TE01

Eur.Phys.J. A 58, 52 (2022)

M.S.Tezekbayeva, A.V.Yeremin, A.I.Svirikhin, A.Lopez-Martens, M.L.Chelnokov, V.I.Chepigin, A.V.Isaev, I.N.Izosimov, A.V.Karpov, A.A.Kuznetsova, O.N.Malyshev, R.S.Mukhin, A.G.Popeko, Yu.A.Popov, V.A.Rachkov, B.S.Sailaubekov, E.A.Sokol, K.Hauschild, H.Jacob, R.Chakma, O.Dorvaux, M.Forge, B.Gall, K.Kessaci, B.Andel, S.Antalic, A.Bronis, P.Mosat

Study of the production and decay properties of neutron-deficient nobelium isotopes

RADIOACTIVITY ^{249,250,250m,251}No(α)[from ²⁰⁴Pb(⁴⁸Ca, xn), E=225.2, 230.0, 237.0, 242.0, 246.0 MeV]; ²⁴⁵Fm, ²⁴⁵Es, ²⁴¹Cf(α)[from ²⁴⁹No α decay]; measured decay products, Eα, Iα, (evaporation residues)α-corelations using SHELS separator and the GABRIELA detector system at FLNR-JINR-Dubna; deduced T_1/2, production σ for ²⁴⁹No, an upper limit on the fission branch. ²⁴⁵Fm(EC), (β⁺); deduced branching ratio for ϵ+β⁺ decay mode. Comparison with previous experimental results.

doi: 10.1140/epja/s10050-022-00707-9

2022XI08

Nucl.Phys. A1028, 122528 (2022)

F.Xing, H.Qi, J.Cui, Y.Gao, Y.Wang, J.Gu, G.Yong

An improved Gamow-like formula for α-decay half-lives

RADIOACTIVITY ^{214,215,216,217,218}U, ^{219,220,221,222,223,224}Np, ^{221,222,223,224,225,226,227}Pu, ^{224,225,226,227,228}Am, ^231,232Cm, ^{233,234,235,236,237,238,239,240,241,242}Bk, ^234,235,236Cf, ^237,238,239Es, ^{239,240,241,242,243,244}Fm, ^241,242,243Md, ^{246,247,248,249,250}No, ^249,250,251Lr, ^{251,252,253,254}Rf, ^253,254,255Db, ^256,257,258Sg, ^{258,259,260,261,262,263}Bh, ^261,262Hs, ^263,264,265Mt, ^{261,262,263,264,265,266}Ds, ^{266,267,268,269,270,271,272,273}Rg, ^{270,271,272,273,274,275,276}Cn, ^{272,273,274,275,276,277,278,279,280,281,282,283,284,285,286,287,288,289,290}Nh, ^{278,279,280,281,282,283,284,285,286,287,288,289,290,291}Fl, ^{281,282,283,284,285,286,287,288,289,290,291,292}Mc, ^{283,284,285,286,287,288,289}Lv, ^{285,286,287,288,289,290,291,292}Ts, ^{288,289,290,291,292,293}Og, ²⁹⁵Og, ^{290,291,292,293,294,295,296}119, ^{291,292,293,294,295,296,297,298,299,300}120, ^{287,288,289,290,291}Og, ^283,284Lv, ^279,280,281Fl, ^275,276Cn, ^271,272,273Ds, ²⁹⁴120, ^268,269Hs, ^264,265Sg, ²⁸¹Fl(α); calculated T_1/2; deduced an improved Gamow-like (IMGL) formula parameters. Comparison with available data.

doi: 10.1016/j.nuclphysa.2022.122528