Abstract
The heaviest elements only exist because of the stabilizing influence of the nuclear shell single-particle structure. This makes them an ideal laboratory to study that structure away from the influence of the bulk properties of nuclear matter. On the other hand, this makes them difficult to produce and study. Over the last decades, a lot of experimental progress has been made, and more recently it has been possible to bring modern laser spectroscopic methods and nuclear spectroscopy approaches to bear. The relevant physics of the heaviest elements will be briefly introduced, and the various experimental techniques used to study them will be described in detail.
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References
D. Ackermann, Nuclear spectroscopy in nuclei with Z ≥ 110. Nucl. Phys. A 944, 376–387 (2015). https://doi.org/10.1016/j.nuclphysa.2015.09.002
S.E. Agbemava et al., Assessing theoretical uncertainties in fission barriers of superheavy nuclei. Phys. Rev. C 95(5), 054324 (2017). https://doi.org/10.1103/PhysRevC.95.054324
S. Akkoyun et al., AGATA – advanced gamma tracking array. Nucl. Instrum. Methods Phys. Res. A 668, 26–58 (2012). ISSN 0168-9002. https://doi.org/10.1016/j.nima.2011.11.081
S.O. Allehabi et al., Theoretical study of electronic structure of erbium and fermium. J. Quant. Spectrosc. Radiat. Transf. 253, 107137 (2020). https://doi.org/10.1016/j.jqsrt.2020.107137
L.L. Andersson et al., TASISpec, a highly efficient multi-coincidence spectrometer for nuclear structure investigations of the heaviest nuclei. Nucl. Instrum. Methods Phys Res. A 622(1), 164–170 (2010). ISSN 0168-9002. https://doi.org/10.1016/j.nima.2010.06.243
I. Angeli et al., Table of experimental nuclear ground state charge radii: an update. At. Data Nucl. Data Tables 99(1), 69–95 (2013). ISSN 0092-640X. https://doi.org/10.1016/j.adt.2011.12.006
M. Asai et al., Experimental identification of spin-parities and single-particle configurations in 257 No and its α- decay daughter 253fm. Phys. Rev. Lett. 95(10), 102502 (2005). https://doi.org/10.1103/physrevlett.95.102502
M. Asai et al., Alpha-gamma spectroscopy of 259Rf produced by using a mixed cf target. Technical report (2009). https://doi.org/10.11484/JAEA-Review-2009-036
M. Asai et al., Neutron one-quasiparticle states in 251Fm151 populated via the α decay of 255No. Phys. Rev. C 83(1), 014315 (2011). https://doi.org/10.1103/physrevc.83.014315
M. Asai et al., Ground-state configuration of the N = 157 nucleus 259No. Phys. Rev. C 87(1), 014332 (2013). https://doi.org/10.1103/physrevc.87.014332
M. Asai et al., Nuclear structure of elements with 100 ≤ Z ≤ 109 from alpha spectroscopy. Nucl. Phys. A944, 308–332 (2015). https://doi.org/10.1016/j.nuclphysa.2015.06.011
B. Back et al., Recent developments in heavy-ion fusion reactions. Rev. Mod. Phys. 86(1), 317–360 (2014). https://doi.org/10.1103/RevModPhys.86.317
H. Backe et al., Isotope shift measurements for superdeformed fission isomeric states. Phys. Rev. Lett. 80(5), 920–923 (1998). https://doi.org/10.1103/physrevlett.80.920
H. Backe et al., Prospects for laser spectroscopy, ion chemistry and mobility measurements of superheavy elements in buffer-gas traps. Nucl. Phys. A, 944, 492–517 (2015). https://doi.org/10.1016/j.nuclphysa.2015.07.002
A. Baran et al., Fission barriers and probabilities of spontaneous fission for elements with Z ≥ 100. Nucl. Phys. A 944, 442–470 (2015). https://doi.org/10.1016/j.nuclphysa.2015.06.002
A. Barzakh et al., Large shape staggering in neutron-deficient Bi isotopes. Phys. Rev. Lett. 127(19), 192501 (2021). https://doi.org/10.1103/physrevlett.127.192501
M. Beckerman, Sub-barrier fusion of two nuclei. Rep. Prog. Phys. 51(8), 1047–1103 (1988). https://doi.org/10.1088/0034-4885/51/8/001
R. Beerwerth, Electron correlation in relativistic multiconfiguration calculations of isotope shift parameters, hyperfine coupling constants and atomic processes. Ph.D. thesis, Friedrich-Schiller-Universität Jena (2019). https://doi.org/10.22032/DBT.39050
M. Bender et al., Shell stabilization of super- and hyperheavy nuclei without magic gaps. Phys. Lett. B 515(1–2), 42–48 (2001). https://doi.org/10.1016/s0370-2693(01)00863-2
D. Berdichevsky et al., Nuclear core densities, isotope shifts, and the parametrization of the droplet model. Z. Phys. A 322(1), 141–147 (1985). https://doi.org/10.1007/BF01412027
H.A. Bethe et al., Nuclear physics A. Stationary states of nuclei. Rev. Mod. Phys. 8(2), 82–229 (1936). https://doi.org/10.1103/revmodphys.8.82
M.R. Bhat, Evaluated nuclear structure data file (ENSDF), in Nuclear Data for Science and Technology (2022), p. 817. Data extracted using the NNDC On-Line Data Service from the ENSDF database, file revised as of (April 2022)
M. Block et al., Recent progress in laser spectroscopy of the actinides. Prog. Part. Nucl. Phys. 116, 103834 (2021). https://doi.org/10.1016/j.ppnp.2020.103834
A.N. Bohr et al., Nuclear Structure (2 vols) (World Scientific Publishing Company, ISBN : 9810231970, London. 1998)
N. Bohr, Neutron capture and nuclear constitution. Nature 137(3461), 344–348 (1936). https://doi.org/10.1038/137344a0
M. Bolsterli et al., New calculation of fission barriers for heavy and superheavy nuclei. Phys. Rev. C 5(3), 1050–1077 (1972). https://doi.org/10.1103/physrevc.5.1050
A. Bracco et al., Gamma spectroscopy with agata in its first phases: new insights in nuclear excitations along the nuclear chart. Prog. Part. Nucl. Phys. 120, 103887 (2021). https://doi.org/10.1016/j.ppnp.2021.103887. Available online: 11 June 2021
R. Briselet et al., In-beam γ-ray and electron spectroscopy of 249, 251Md. Phys. Rev. C 102, 014307 (2020). https://doi.org/10.1103/PhysRevC.102.014307
P. Butler et al., Electron spectroscopy using a multi-detector array. Nucl. Instrum. Methods Phys. Res. A 381(2), 433–442 (1996). ISSN 0168-9002. https://doi.org/10.1016/S0168-9002(96)00762-0
P.A. Butler et al., Conversion electron cascades in \(_{\mathrm {102}}^{\mathrm {254}}\mathrm {N}\mathrm {o}\). Phys. Rev. Lett. 89, 202501 (2002). https://doi.org/10.1103/PhysRevLett.89.202501
P. Campbell et al., Laser spectroscopy for nuclear structure physics. Prog. Part. Nucl. Phys. 86, 127–180 (2016). https://doi.org/10.1016/j.ppnp.2015.09.003
B. Cheal et al., Progress in laser spectroscopy at radioactive beam facilities. J. Phys. G: Nucl. Part. Phys. 37, 113101 (2010). https://doi.org/10.1088/0954-3899/37/11/113101
B. Cheal et al., Laser spectroscopy of radioactive isotopes: role and limitations of accurate isotope-shift calculations. Phys. Rev. A 86(4), 042501 (2012). https://doi.org/10.1103/physreva.86.042501
R. Clark et al., High-K multi-quasiparticle states in 254No. Phys. Lett. B 690(1), 19–24 (2010). https://doi.org/10.1016/j.physletb.2010.04.079
L. Corradi et al., Multinucleon transfer reactions: present status and perspectives. Nucl. Instrum. Methods Phys. Res. B 317, 743–751 (2013). https://doi.org/10.1016/j.nimb.2013.04.093
S. Ćwiok et al., Shape coexistence and triaxiality in the superheavy nuclei. Nature 433(7027), 705–709 (2005). https://doi.org/10.1038/nature03336
R. de Groote et al., Precision measurement of the magnetic octupole moment in 45Sc as a test for state-of-the-art atomic- and nuclear-structure theory. Phys. Lett. B 827, 136930 (2022). https://doi.org/10.1016/j.physletb.2022.136930
P. de Marcillac et al., Experimental detection of α-particles from the radioactive decay of natural bismuth. Nature 422(6934), 876–878 (2003). https://doi.org/10.1038/nature01541
A. Di Nitto et al., Albega: a decay spectroscopy setup for chemically separated samples. GSI annual report (2015). https://doi.org/10.15120/GR-2015-1-MU-NUSTAR-SHE-C-06
P.F. Dittner et al., Identification of the atomic number of nobelium by an x-ray technique. Phys. Rev. Lett. 26(17), 1037–1040 (1971). https://doi.org/10.1103/physrevlett.26.1037
S. Dmitriev et al., Status and perspectives of the Dubna superheavy element factory. EPJ Web Conf. 131, 08001 (2016). https://doi.org/10.1051/epjconf/201613108001
G.D. Dracoulis et al., Review of metastable states in heavy nuclei. Rep. Prog. Phys. 79(7), 076301 (2016). https://doi.org/10.1088/0034-4885/79/7/076301
V.A. Dzuba et al., Combining configuration interaction with perturbation theory for atoms with a large number of valence electrons. Phys. Rev. A 95(1), 012503 (2017). https://doi.org/10.1103/physreva.95.012503
K. Eberhardt et al., Actinide targets for fundamental research in nuclear physics, in AIP Conference Proceedings (2018). https://doi.org/10.1063/1.5035526
S. Eeckhaudt et al., Evidence for non-yrast states in 254No. Eur. Phys. J. A 26(2), 227–232 (2005). https://doi.org/10.1140/epja/i2005-10163-6
C. Ekström, Hyperfine structure of 175Lu and nuclear electromagnetic moments of the lutetium isotopes 161−181Lu. Phys. Scr. 13(4), 217–224 (1976). https://doi.org/10.1088/0031-8949/13/4/004
E. Eliav et al., Electronic structure at the edge of the periodic table. Nucl. Phys. News 29(1), 16–20 (2019). https://doi.org/10.1080/10619127.2019.1571794
P. Fallon et al., GRETINA and its early science. Annu. Rev. Nucl. Part. Sci. 66(1), 321–339 (2016). https://doi.org/10.1146/annurev-nucl-102115-044834
R. Ferrer et al., In gas laser ionization and spectroscopy experiments at the Superconducting Separator Spectrometer (S 3): conceptual studies and preliminary design. Nucl. Instrum. Methods Phys Res. B 317, 570–581 (2013). https://doi.org/10.1016/j.nimb.2013.07.028
R. Ferrer et al., Towards high-resolution laser ionization spectroscopy of the heaviest elements in supersonic gas jet expansion. Nat. Commun. 8 (2017). https://doi.org/10.1038/ncomms14520
V.V. Flambaum et al., Isotope shift, nonlinearity of King plots, and the search for new particles. Phys. Rev. A 97(3), 032510 (2018). https://doi.org/10.1103/physreva.97.032510
V.V. Flambaum et al., Sensitivity of the isotope shift to the distribution of nuclear charge density. Phys. Rev. A 100(3), 032511 (2019). https://doi.org/10.1103/physreva.100.032511
S. Fritzsche, Symbolic evaluation of expressions from Racah’s algebra. Symmetry 13(9), 1558 (2021). https://doi.org/10.3390/sym13091558
L.P. Gaffney et al., Studies of pear-shaped nuclei using accelerated radioactive beams. Nature 497(7448), 199–204 (2013). https://doi.org/10.1038/nature12073
J. Gates et al., First direct measurements of superheavy-element mass numbers. Phys. Rev. Lett. 121(22), 222501 (2018). https://doi.org/10.1103/physrevlett.121.222501
s. Giuliani et al., Superheavy elements: oganesson and beyond. Rev. Mod. Phys. 91(1), 011001 (2019). https://doi.org/10.1103/revmodphys.91.011001
M. Goeppert-Mayer, On closed shells in nuclei. Phys. Rev. 74(1), 235–239 (1948)
C. Granados et al., In-gas laser ionization and spectroscopy of actinium isotopes near the N = 126 closed shell. Phys. Rev. C 96, 054331 (2017). https://doi.org/10.1103/PhysRevC.96.054331
P.T. Greenlees et al., High-k structure in 250Fm and the deformed shell gaps at N = 152 and Z = 100. Phys. Rev. C 78(2), 021303 (2008). https://doi.org/10.1103/physrevc.78.021303
P.T. Greenlees et al., Shell-structure and pairing interaction in superheavy nuclei: Rotational properties of the Z = 104 nucleus 256Rf. Phys. Rev. Lett. 109(1), 012501 (2012). https://doi.org/10.1103/physrevlett.109.012501
A. Görgen et al., Coulomb excitation studies of shape coexistence in atomic nuclei. J. Phys. G: Nucl. Part. Phys. 43(2), 024002 (2016). https://doi.org/10.1088/0954-3899/43/2/024002
K. Hauschild et al., GABRIELA: a new detector array for γ-ray and conversion electron spectroscopy of transfermium elements. Nucl. Instrum. Methods Phys. Res. A 560(2), 388–394 (2006). ISSN 0168-9002. https://doi.org/10.1016/j.nima.2006.01.107
O. Haxel et al., On the “magic numbers” in nuclear structure. Phys. Rev. 75(11), 1766–1766 (1949). https://doi.org/10.1103/physrev.75.1766.2
P.H. Heenen et al., Shapes and α- and β-decays of superheavy nuclei. Nucl. Phys. A 944, 415–441 (2015). https://doi.org/10.1016/j.nuclphysa.2015.07.016
R. Heinke et al., High-resolution in-source laser spectroscopy in perpendicular geometry. Hyperfine Interact. 238(1), 1 (2016). ISSN 1572-9540. https://doi.org/10.1007/s10751-016-1386-2
R.D. Herzberg, Nuclear structure of superheavy elements, in The Chemistry of Superheavy Elements (Springer, Heidelberg/New York/Dordrecht/London, 2013), pp. 83–133. https://doi.org/10.1007/978-3-642-37466-1_2
R.D. Herzberg et al., Nuclear isomers in superheavy elements as stepping stones towards the island of stability. Nature 442(7105), 896–899 (2006). https://doi.org/10.1038/nature05069
R.D. Herzberg et al., In-beam and decay spectroscopy of transfermium nuclei. Prog. Part. Nucl. Phys. 61(2), 674–720 (2008). https://doi.org/10.1016/j.ppnp.2008.05.003
F.P. Heßberger et al., Alpha-gamma decay studies of 255Rf, 251No and 247Fm. Eur. Phys. J. A 30(3), 561–569 (2006). https://doi.org/10.1140/epja/i2006-10137-2
S. Hofmann, Super-heavy nuclei. J. Phys. G: Nucl. Part. Phys. 42(11) 114001 (2015). https://doi.org/10.1088/0954-3899/42/11/114001
S. Hofmann et al., The discovery of the heaviest elements. Rev. Mod. Phys. 72(3), 733–767 (2000). https://doi.org/10.1103/RevModPhys.72.733
S. Hofmann et al., The new isotope 270110 and its decay products 266 Hs and 262 Sg. Eur. Phys. J. A 10(1), 5–10 (2001). https://doi.org/10.1007/s100500170137
M.G. Itkis et al., The processes of fusion-fission and quasi-fission of superheavy nuclei, in Dynamical Aspects of Nuclear Fission (World Scientific, 2008). https://doi.org/10.1142/9789812837530_0004
P. Jerabek et al., Electron and nucleon localization functions of oganesson: Approaching the thomas-fermi limit. Phys. Rev. Lett. 120(5), 053001 (2018). https://doi.org/10.1103/physrevlett.120.053001
V. Jha et al., Incomplete fusion reactions using strongly and weakly bound projectiles. Phys. Rep. 845, 1–58 (2020). https://doi.org/10.1016/j.physrep.2019.12.003
G. Jones, Detection of long-lived isomers in super-heavy elements. Nucl. Instrum. Methods Phys. Res. A 488(1–2), 471–472 (2002). https://doi.org/10.1016/s0168-9002(02)00469-2
A. Karpov et al., Synthesis of transuranium nuclei in multinucleon transfer reactions at near-barrier energies. Phys. Part. Nucl. Lett. 16(6), 667–670 (2019). https://doi.org/10.1134/S1547477119060475
S. Ketelhut et al., γ-ray spectroscopy at the limits: first observation of rotational bands in 255-Lr. Phys. Rev. Lett. 102(21), 212501 (2009). https://doi.org/10.1103/physrevlett.102.212501
H.J. Kluge et al., Lasers for nuclear physics. Spectrochim. Acta Part B 58(6), 1031–1045 (2003). https://doi.org/10.1016/j.ppnp.2015.09.003
G.F. Knoll, Radiation Detection and Measurement 4th Ed. (New York, Wiley, 2010)
M. Kowal et al., Fission barriers for even-even superheavy nuclei. Phys. Rev. C 82(1), 014303 (2010). https://doi.org/10.1103/PhysRevC.82.014303
J.V. Kratz, Nuclear and Radiochemistry: Fundamentals and Applications (Wiley, 2022)
J.V. Kratz et al., Reexamining the heavy-ion reactions 238U +238U and 238U +248Cm and actinide production close to the barrier. Phys. Rev. C 88(5), 054615 (2013). https://doi.org/10.1103/PhysRevC.88.054615
Y. Kudryavtsev et al., Beams of short lived nuclei produced by selective laser ionization in a gas cell. Nucl. Instrum. Methods Phys. Res. B 114(3–4), 350–365 (1996). https://doi.org/10.1016/0168-583x(96)00194-2
Y. Kudryavtsev et al., The in-gas-jet laser ion source: resonance ionization spectroscopy of radioactive atoms in supersonic gas jets. Nucl. Instrum. Methods Phys. Res. B 297, 7–22 (2013). https://doi.org/10.1016/j.nimb.2012.12.008
M. Laatiaoui et al., Atom-at-a-time laser resonance ionization spectroscopy of nobelium. Nature 538(7626), 495–498 (2016). https://doi.org/10.1038/nature19345
F. Lautenschläger et al., Developments for resonance ionization laser spectroscopy of the heaviest elements at SHIP. Nucl. Instrum. Methods Phys Res. B 383, 115–122 (2016). https://doi.org/10.1016/j.nimb.2016.06.001
W. Lauth et al., Resonance ionization spectroscopy in a buffer gas cell with radioactive decay detection, demonstrated using Tl 208. Phys. Rev. Lett. 68(11), 1675–1678 (1992). https://doi.org/10.1103/physrevlett.68.1675
I.Y. Lee, The GAMMASPHERE. Nucl. Phys. A 520, c641–c655 (1990). https://doi.org/10.1016/0375-9474(90)91181-p
M. Leino, Gas-filled separators – an overview. Nucl. Instrum. Methods Phys Res. B 204, 129–137 (2003). https://doi.org/10.1016/S0168-583X(02)01901-8
M. Leino et al., In-beam study of 254No. Eur. Phys. J. A 6(1), 63–69 (1999). https://doi.org/10.1007/s100500050318
W.R. Leo, Techniques for Nuclear and Particle Physics Experiments: A How-to Approach (Springer Science & Business Media, 1994) https://doi.org/10.1007/978-3-642-57920-2
A.P. Leppänen et al., Recoil-fission tagging of the transfermium nucleus 252No. Eur. Phys. J. A 28(3), 301–306 (2006). https://doi.org/10.1140/epja/i2006-10056-2
E. McMillan et al., Radioactive Element 93. Phys. Rev. 57(12), 1185–1186 (1940). https://doi.org/10.1103/PhysRev.57.1185.2
H. Meldner, Predictions of new magic regions and masses for super-heavy nuclei from calculations with realistic shell model single particle hamiltonians. Ark. Fys. 36, 593–8 (1967)
M. Miski-Oglu et al., Beam commissioning of the demonstrator setup for the superconducting continuous wave HIM/GSI-linac. J. Phys.: Conf. Ser. 1350(1), 012089 (2019). https://doi.org/10.1088/1742-6596/1350/1/012089
H. Morinaga et al., In-Beam Gamma-Ray Spectroscopy (Amsterdam : North Holland Publ. Comp., ISBN: 0720402972, 1976)
K. Morita et al., New result in the production and decay of an isotope,278113, of the 113th element. J. Phys. Soc. Jpn. 81(10), 103201 (2012). https://doi.org/10.1143/JPSJ.81.103201
G. Münzenberg et al., The velocity filter SHIP, a separator of unslowed heavy ion fusion products. Nucl. Instrum. Methods 161(1), 65–82 (1979). https://doi.org/10.1016/0029-554X(79)90362-8
W. Myers et al., The nuclear droplet model for arbitrary shapes. Ann. Phys. (NY) 84(1–2), 186–210 (1974). https://doi.org/10.1016/0003-4916(74)90299-1
W.D. Myers et al., An update on droplet-model charge distributions. Nucl. Phys. A 410(1), 61–73 (1983). https://doi.org/10.1016/0375-9474(83)90401-3
R. Neugart et al., Nuclear moments, in The Euroschool Lectures on Physics with Exotic Beams, vol. II (Springer, Berlin/Heidelberg, 2006), pp. 135–189. https://doi.org/10.1007/3-540-33787-3_4
R. Neugart et al., Collinear laser spectroscopy at ISOLDE: new methods and highlights. J. Phys. G: Nucl. Part. Phys. 44(6), 064002 (2017). https://doi.org/10.1088/1361-6471/aa6642
S.G. Nilsson, Binding states of individual nucleons in strongly deformed nuclei. Dan. Mat. Fys. Medd. 29(CERN-55-30), 1–69 (1955)
W. Nörtershäuser, New Developments in Laser Spectroscopy for RIBs. International School of Physics “Enrico Fermi”. Nuclear Physics with Stable and Radioactive Ion Beams, vol. 201 (2019), pp. 293–323. ISSN 0074-784X. https://doi.org/10.3254/978-1-61499-957-7-293
S. Nothhelfer et al., Nuclear structure investigations of 253−255Es by laser spectroscopy. Phys. Rev. C 105(2), l021302 (2022). https://doi.org/10.1103/physrevc.105.l021302
R. Page et al., The great spectrometer. Nucl. Instrum. Methods Phys. Res. Sect. B 204, 634–637 (2003). ISSN 0168-583X. https://doi.org/10.1016/S0168-583X(02)02143-2. 14th International Conference on Electromagnetic Isotope Separators and Techniques Related to their Applications
J. Pakarinen et al., The SAGE spectrometer. Eur. Phys. J. A 50(3) (2014). https://doi.org/10.1140/epja/i2014-14053-6
J. Pakarinen et al., The JUROGAM 3 spectrometer. Eur. Phys. J. A 56(5) (2020). https://doi.org/10.1140/epja/s10050-020-00144-6
P. Papadakis et al., The MARA-LEB ion transport system. Nucl. Instrum. Methods Phys. Res. Sect. B 463, 286–289 (2020). https://doi.org/10.1016/j.nimb.2019.05.007
S. Paschalis et al., The performance of the gamma-ray energy tracking in-beam nuclear array GRETINA. Nucl. Instrum. Methods Phys. Res. Sect. A 709, 44–55 (2013). https://doi.org/10.1016/j.nima.2013.01.009
L. Pašteka et al., Relativistic coupled cluster calculations with variational quantum electrodynamics resolve the discrepancy between experiment and theory concerning the electron affinity and ionization potential of gold. Phys. Rev. Lett. 118(2), 023002 (2017). https://doi.org/10.1103/physrevlett.118.023002
E.S. Paul et al., In-beam γ-ray spectroscopy above 100Sn using the new technique of recoil decay tagging. Phys. Rev. C 51(1), 78–87 (1995). https://doi.org/10.1103/physrevc.51.78
S. Porsev et al., Precision calculation of hyperfine constants for extracting nuclear moments of 229Th. Phys. Rev. Lett. 127(25), 253001 (2021). https://doi.org/10.1103/physrevlett.127.253001
S. Raeder et al., Probing sizes and shapes of nobelium isotopes by laser spectroscopy. Phys. Rev. Lett. 120(23), 232503 (2018). https://doi.org/10.1103/physrevlett.120.232503
S. Raeder et al., A gas-jet apparatus for high-resolution laser spectroscopy on the heaviest elements at SHIP. Nucl. Instrum. Methods Phys. Res. Sect. B 463, 272–276 (2020). https://doi.org/10.1016/j.nimb.2019.05.016
P.G. Reinhard et al., Toward a global description of nuclear charge radii: Exploring the Fayans energy density functional. Phys. Rev. C 95(6) (2017). https://doi.org/10.1103/physrevc.95.064328
P. Reiter et al., Ground-state band and deformation of the Z = 102 isotope 254No. Phys. Rev. Lett. 82(3), 509–512 (1999). https://doi.org/10.1103/physrevlett.82.509
P. Reiter et al., Entry distribution, fission barrier, and formation mechanism of \(^{254}_{102}No\). Phys. Rev. Lett. 84(16), 3542–3545 (2000). https://doi.org/10.1103/physrevlett.84.3542
J. Roberto et al., Actinide targets for the synthesis of super-heavy elements. Nucl. Phys. A 944, 99–116 (2015). https://doi.org/10.1016/j.nuclphysa.2015.06.009
S.M. Robinson et al., Production of Cf-252 and other transplutonium isotopes at oak ridge national laboratory. Radiochim. Acta 108(9), 737–746 (2020). https://doi.org/10.1515/ract-2020-0008
A. Såmark-Roth et al., Spectroscopy along flerovium decay chains: Discovery of 280Ds and an excited state in 282Cn. Phys. Rev. Lett. 126, 032503 (2021). https://doi.org/10.1103/PhysRevLett.126.032503
M.S. Safronova et al., Atomic properties of actinide ions with particle-hole configurations. Phys. Rev. A 97(1), 012511 (2018). https://doi.org/10.1103/physreva.97.012511
N. Sakamoto et al., Construction status of the superconducting linac at riken ribf, in Proceedings of the 29thLinear Accelerator Conference, LINAC2018:China (2018). https://doi.org/10.18429/JACoW-LINAC2018-WE2A03
G. Saxena et al., Bubble structure in magic nuclei. Phys. Lett. B 788, 1–6 (2019). https://doi.org/10.1016/j.physletb.2018.08.076
M. Schädel et al., Isotope distributions in the reaction of 238U with 238U. Phys. Rev. Lett. 41(7), 469–472 (1978). https://doi.org/10.1103/PhysRevLett.41.469
M. Schädel et al., The Chemistry of Superheavy Elements 2nd ed. 13 Dec. (Springer Heidelberg, New York Dordrecht London, 2013)
K.H. Schmidt et al., Some remarks on the error analysis in the case of poor statistics. Z. Phys. A 316(1), 19–26 (1984). https://doi.org/10.1007/bf01415656
K.H. Schmidt et al., Gamma-spectroscopic investigations in the radiative fusion reaction 90Zr + 90Zr. Phys. Lett. B 168(1–2), 39–42 (1986). https://doi.org/10.1016/0370-2693(86)91456-5
B. Schuetrumpf et al., Central depression in nucleonic densities: Trend analysis in the nuclear density functional theory approach. Phys. Rev. C 96, 024306 (2017). https://doi.org/10.1103/physrevc.96.024306
G.T. Seaborg et al., Radioactive Element 94 from Deuterons on Uranium. Phys. Rev. 69(7–8), 366–367 (1946). https://doi.org/10.1103/PhysRev.69.366.2
E.C. Seltzer, K X-Ray Isotope Shifts. Phys. Rev. 188(4), 1916–1919 (1969). https://doi.org/10.1103/physrev.188.1916
A. Semchenkov et al., The TransActinide separator and chemistry apparatus (TASCA) at GSI – optimization of ion-optical structures and magnet designs. Nucl. Instrum. Methods Phys. Res. Sect. B 266(19–20), 4153–4161 (2008). https://doi.org/10.1016/j.nimb.2008.05.132
K. Siwek-Wilczyńska et al., Predictions of the fusion-by-diffusion model for the synthesis cross sections of Z = 114 − 120 elements based on macroscopic-microscopic fission barriers. Phys. Rev. C 86(1), 014611 (2012). https://doi.org/10.1103/PhysRevC.86.014611
A. Sobiczewski et al., Closed shells for Z > 82 and N > 126 in a diffuse potential well. Phys. Lett. 22(4), 500–502 (1966). https://doi.org/10.1016/0031-9163(66)91243-1
V. Strutinsky, Shell effects in nuclear masses and deformation energies. Nucl. Phys. A 95(2), 420–442 (1967). https://doi.org/10.1016/0375-9474(67)90510-6
B. Sulignano et al., Investigation of high-K states in 252No. Phys. Rev. C 86(4), 044318 (2012). https://doi.org/10.1103/physrevc.86.044318
S.K. Tandel et al., K isomers in 254No: probing single-particle energies and pairing strengths in the heaviest nuclei. Phys. Rev. Lett. 97(8), 082502 (2006). https://doi.org/10.1103/physrevlett.97.082502
C. Theisen et al., In-beam spectroscopy of heavy elements. Nucl. Phys. A 944, 333–375 (2015). https://doi.org/10.1016/j.nuclphysa.2015.07.014
J. Tōke et al., Quasi-fission — the mass-drift mode in heavy-ion reactions. Nucl. Phys. A 440(2), 327–365 (1985). https://doi.org/10.1016/0375-9474(85)90344-6
V. Utyonkov et al., The discovery of elements 113 to 118. EPJ Web Conf. 131, 06003 (2016). https://doi.org/10.1051/epjconf/201613106003
C.F.V. Weizsäcker, Zur Theorie der Kernmassen. Z. Phys. 96(7–8), 431–458 (1935). https://doi.org/10.1007/bf01337700
E. Verstraelen et al., Search for octupole-deformed actinium isotopes using resonance ionization spectroscopy. Phys. Rev. C 100(4), 044321 (2019). https://doi.org/10.1103/physrevc.100.044321
L. Visscher et al., Dirac–Fock atomic electronic structure calculations using different nuclear charge distributions. At. Data. Nucl. Data Tables 67(2), 207–224 (1997). https://doi.org/10.1006/adnd.1997.0751
A. Voss et al., High-resolution laser spectroscopy of long-lived plutonium isotopes. Phys. Rev. A 95(3), 032506 (2017). https://doi.org/10.1103/physreva.95.032506
P. Walker et al., 100 years of nuclear isomers—then and now. Phys. Scr. 95(4), 044004 (2020). https://doi.org/10.1088/1402-4896/ab635d
A.H. Wapstra, The 1971 atomic mass evaluation, in Atomic Masses and Fundamental Constants 4 (Springer, 1972), pp. 283–293. https://doi.org/10.1007/978-1-4684-7876-1_30
X.F. Yang et al., Laser spectroscopy for the study of exotic nuclei, in Prog. Part. Nucl. Phys. (2022), https://doi.org/10.1016/j.ppnp.2022.104005
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Block, M., Raeder, S., Herzberg, RD. (2022). Heaviest Elements: Decay and Laser Spectroscopy. In: Tanihata, I., Toki, H., Kajino, T. (eds) Handbook of Nuclear Physics . Springer, Singapore. https://doi.org/10.1007/978-981-15-8818-1_45-1
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