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Darmstadtium (₁₁₀Ds) is a synthetic element, and thus a standard atomic weight cannot be given. Like all synthetic elements, it has no stable isotopes. The first isotope to be synthesized was Ds in 1994. There are 11 known radioisotopes from Ds to Ds (with many gaps) and 2 or 3 known isomers. The longest-lived isotope is Ds with a half-life of 14 seconds. However, the unconfirmed Ds might have an even longer half-life of 67 seconds.

List of isotopes

1. Ds – Excited nuclear isomer.
2. ( ) – Uncertainty (1σ) is given in concise form in parentheses after the corresponding last digits.
3. # – Atomic mass marked #: value and uncertainty derived not from purely experimental data, but at least partly from trends from the Mass Surface (TMS).
4. Modes of decay:

   SF:	Spontaneous fission

5. ( ) spin value – Indicates spin with weak assignment arguments.
6. # – Values marked # are not purely derived from experimental data, but at least partly from trends of neighboring nuclides (TNN).
7. ^ Unconfirmed isotope
8. ^ Order of ground state and isomer is uncertain.
9. Not directly synthesized, occurs in decay chain of Fl
10. Not directly synthesized, occurs as decay product of Cn
11. Not directly synthesized, occurs in decay chain of Fl
12. Not directly synthesized, occurs in decay chain of Fl
13. Not directly synthesized, occurs in decay chain of Lv, unconfirmed
14. Not directly synthesized, occurs in decay chain of Fl, unconfirmed

Isotopes and nuclear properties

Nucleosynthesis

Superheavy elements such as darmstadtium are produced by bombarding lighter elements in particle accelerators that induce fusion reactions. Whereas most of the isotopes of darmstadtium can be synthesized directly this way, some heavier ones have only been observed as decay products of elements with higher atomic numbers.

Depending on the energies involved, the former are separated into "hot" and "cold". In hot fusion reactions, very light, high-energy projectiles are accelerated toward very heavy targets (actinides), giving rise to compound nuclei at high excitation energy (~40–50 MeV) that may either fission or evaporate several (3 to 5) neutrons. In cold fusion reactions, the produced fused nuclei have a relatively low excitation energy (~10–20 MeV), which decreases the probability that these products will undergo fission reactions. As the fused nuclei cool to the ground state, they require emission of only one or two neutrons, and thus, allows for the generation of more neutron-rich products. The latter is a distinct concept from that of where nuclear fusion claimed to be achieved at room temperature conditions (see cold fusion).

The table below contains various combinations of targets and projectiles which could be used to form compound nuclei with Z = 110.

Cold fusion

Before the first successful synthesis of darmstadtium in 1994 by the GSI team, scientists at GSI also tried to synthesize darmstadtium by bombarding lead-208 with nickel-64 in 1985. No darmstadtium atoms were identified. After an upgrade of their facilities, the team at GSI successfully detected 9 atoms of Ds in two runs of their discovery experiment in 1994. This reaction was successfully repeated in 2000 by GSI (4 atoms), in 2000 and 2004 by the Lawrence Berkeley National Laboratory (LBNL) (9 atoms in total) and in 2002 by RIKEN (14 atoms). The GSI team studied the analogous reaction with nickel-62 instead of nickel-64 in 1994 as part of their discovery experiment. Three atoms of Ds were detected. A fourth decay chain was measured but was subsequently retracted.

In addition to the official discovery reactions, in October–November 2000, the team at GSI also studied the analogous reaction using a lead-207 target in order to synthesize the new isotope Ds. They succeeded in synthesising eight atoms of Ds, relating to a ground state isomer, Ds, and a high-spin metastable state, Ds.

In 1986, a team at the Joint Institute for Nuclear Research (JINR) in Dubna, Russia, studied the reaction:

₈₃Bi +
₂₇Co →
₁₁₀Ds +
₀n

They were unable to detect any darmstadtium atoms. In 1995, the team at LBNL reported that they had succeeded in detecting a single atom of Ds using this reaction. However, several decays were not measured and further research is required to confirm this discovery.

Hot fusion

In the late 1980s, the GSI team attempted to synthesize element 110 by bombarding a target consisting of various uranium isotopes—U, U, and U—with accelerated argon-40 ions. No atoms were detected; a limiting cross section of 21 pb was reported.

In September 1994, the team at Dubna detected a single atom of Ds by bombarding a plutonium-244 target with accelerated sulfur-34 ions.

Experiments were done in 2004 at the Flerov Laboratory of Nuclear Reactions (FLNR) in Dubna studying the fission characteristics of the compound nucleus Ds, produced in the reaction:

₉₀Th +
₂₀Ca →
₁₁₀Ds* → fission

The result revealed how compound nuclei such as this fission predominantly by expelling magic and doubly magic nuclei such as Sn (Z = 50, N = 82). No darmstadtium atoms were obtained. A compound nucleus is a loose combination of nucleons that have not arranged themselves into nuclear shells yet. It has no internal structure and is held together only by the collision forces between the target and projectile nuclei. It is estimated that it requires around 10 s for the nucleons to arrange themselves into nuclear shells, at which point the compound nucleus becomes a nuclide, and this number is used by IUPAC as the minimum half-life a claimed isotope must have in order to be recognized as being discovered.

The Th+Ca reaction was attempted again at the FLNR in 2022; it was predicted that the Ca-induced reaction leading to element 110 would have a lower yield than those leading to lighter or heavier elements. Seven atoms of Ds were reported, with lifetimes ranging between 9.3 μs and 983.1 μs; four decayed by spontaneous fission and three decayed via a two-alpha sequence to Hs and the spontaneously fissioning Sg. The maximum reported cross section for the production of Ds was about 0.7 pb and a sensitivity limit an order of magnitude lower was reached. This reported cross section is lower than that of all reactions using Ca as a projectile, with the exception of Cf + Ca, and it further supports the existence of magic numbers at Z = 108, N = 162 and Z = 114, N = 184. In 2023, the JINR team repeated this reaction at a higher beam energy and also found Ds. They intend to further study the reaction to search for Ds. The FLNR also successfully synthesised Ds in the U+Ar reaction.

As decay product

Darmstadtium has been observed as a decay product of copernicium. Copernicium currently has seven known isotopes, five of which have been shown to alpha decay into darmstadtium, with mass numbers 273, 277, and 279–281. To date, all of these bar Ds have only been produced by decay of copernicium. Parent copernicium nuclei can be themselves decay products of flerovium or livermorium. Darmstadtium may also have been produced in the electron capture decay of roentgenium nuclei which are themselves daughters of nihonium and moscovium. For example, in 2004, the Dubna team (JINR) identified darmstadtium-281 as a product in the decay of livermorium via an alpha decay sequence:

₁₁₆Lv
→
₁₁₄Fl
+
₂He

₁₁₄Fl
→
₁₁₂Cn
+
₂He

₁₁₂Cn
→
₁₁₀Ds
+
₂He

Retracted isotopes

Ds

The first synthesis of element 114 resulted in two atoms assigned to Fl, decaying to the Ds, which underwent spontaneous fission. The assignment was later changed to Fl and the darmstadtium isotope to Ds. Hence, Ds remained unknown until 2016, when it was populated by the hitherto unknown alpha decay of Cn (previously, that nucleus was only known to undergo spontaneous fission). The discovery of Ds in this decay chain was confirmed in 2021; it undergoes spontaneous fission with a half-life of 360 μs.

Ds

In the claimed synthesis of Og in 1999, the isotope Ds was identified as decaying by 10.18 MeV alpha emission with a half-life of 3.0 ms. This claim was retracted in 2001. This isotope was finally created in 2010 and its decay data supported the fabrication of previous data.

Ds

In the synthesis of Cn in 1996 by GSI (see copernicium), one decay chain proceeded via Ds, which decayed by emission of a 9.73 MeV alpha particle with a lifetime of 170 ms. This would have been assigned to an isomeric level. This data could not be confirmed and thus this isotope is currently unknown or unconfirmed.

Ds

In the first attempt to synthesize darmstadtium, a 10 ms SF activity was assigned to Ds in the reaction Th(Ca,4n). Given current understanding regarding stability, this isotope has been retracted from the table of isotopes.

Nuclear isomerism

Ds

The production of Ds by the decay of Fl or Lv has produced two very different decay modes. The most common and readily confirmed mode is spontaneous fission with a half-life of 11 s. A much rarer and as yet unconfirmed mode is alpha decay by emission of an alpha particle with energy 8.77 MeV with an observed half-life of around 3.7 min. This decay is associated with a unique decay pathway from the parent nuclides and must be assigned to an isomeric level. The half-life suggests that it must be assigned to an isomeric state but further research is required to confirm these reports. It was suggested in 2016 that this unknown activity might be due to Mt, the great-granddaughter of Fl via electron capture and two consecutive alpha decays.

Ds

Decay data from the direct synthesis of Ds clearly indicates the presence of two nuclear isomers. The first emits alpha particles with energies 10.74 and 10.69 MeV and has a half-life of 1.63 ms. The other only emits alpha particles with an energy of 10.71 MeV and has a half-life of 69 ms. The first has been assigned to the ground state and the latter to an isomeric level. It has been suggested that the closeness of the alpha decay energies indicates that the isomeric level may decay primarily by delayed isomeric transition to the ground state, resulting in an identical measured alpha energy and a combined half-life for the two processes.

Ds

The direct production of Ds has clearly identified two nuclear isomers. The ground state decays by alpha emission into the ground state of Hs by emitting an alpha particle with energy 11.03 MeV and has a half-life of 0.10 ms. The metastable state decays by alpha emission, emitting alpha particles with energies of 12.15, 11.15, and 10.95 MeV, and has a half-life of 6 ms. When the metastable state emits an alpha particle of energy 12.15 MeV, it decays into the ground state of Hs, indicating that it has 1.12 MeV of excess energy.

Chemical yields of isotopes

Cold fusion

The table below provides cross-sections and excitation energies for cold fusion reactions producing darmstadtium isotopes directly. Data in bold represent maxima derived from excitation function measurements. + represents an observed exit channel.

Fission of compound nuclei with Z = 110

Experiments have been performed in 2004 at the Flerov Laboratory of Nuclear Reactions in Dubna studying the fission characteristics of the compound nucleus Ds. The nuclear reaction used is Th+Ca. The result revealed how nuclei such as this fission predominantly by expelling closed shell nuclei such as Sn (Z = 50, N = 82).

Theoretical calculations

Decay characteristics

Theoretical calculation in a quantum tunneling model reproduces the experimental alpha decay half-live data. It also predicts that the isotope Ds would have alpha decay half-life of the order of 311 years.

Evaporation residue cross sections

The below table contains various targets-projectile combinations for which calculations have provided estimates for cross section yields from various neutron evaporation channels. The channel with the highest expected yield is given.

DNS = Di-nuclear system; σ = cross section

References

1. ^ Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
2. ^ Hofmann, S.; Heinz, S.; Mann, R.; et al. (2016). "Review of even element super-heavy nuclei and search for element 120". The European Physical Journal A. 2016 (52): 180. Bibcode:2016EPJA...52..180H. doi:10.1140/epja/i2016-16180-4. S2CID 254113387.
3. Wang, Meng; Huang, W.J.; Kondev, F.G.; Audi, G.; Naimi, S. (2021). "The AME 2020 atomic mass evaluation (II). Tables, graphs and references*". Chinese Physics C. 45 (3): 030003. doi:10.1088/1674-1137/abddaf.
4. ^ Oganessian, Yuri; et al. (6 May 2024). "Synthesis and decay properties of isotopes of element 110: Ds and Ds". Physical Review C. 109 (5): 054307. doi:10.1103/PhysRevC.109.054307.
5. ^ Oganessian, Yu. Ts.; Utyonkov, V. K.; Shumeiko, M. V.; et al. (2023). "New isotope Ds and its decay products Hs and Sg from the Th + Ca reaction". Physical Review C. 108 (24611): 024611. Bibcode:2023PhRvC.108b4611O. doi:10.1103/PhysRevC.108.024611. S2CID 261170871.
6. ^ Oganessian, Yu. Ts.; Utyonkov, V. K.; Ibadullayev, D.; et al. (2022). "Investigation of Ca-induced reactions with Pu and U targets at the JINR Superheavy Element Factory". Physical Review C. 106 (24612): 024612. Bibcode:2022PhRvC.106b4612O. doi:10.1103/PhysRevC.106.024612. OSTI 1883808. S2CID 251759318.
7. ^ Såmark-Roth, A.; Cox, D. M.; Rudolph, D.; et al. (2021). "Spectroscopy along Flerovium Decay Chains: Discovery of Ds and an Excited State in Cn". Physical Review Letters. 126 (3): 032503. Bibcode:2021PhRvL.126c2503S. doi:10.1103/PhysRevLett.126.032503. hdl:10486/705608. PMID 33543956.
8. Forsberg, U.; Rudolph, D.; Andersson, L.-L.; et al. (2016). "Recoil-α-fission and recoil-α–α-fission events observed in the reaction 48Ca + 243Am". Nuclear Physics A. 953: 117–138. arXiv:1502.03030. Bibcode:2016NuPhA.953..117F. doi:10.1016/j.nuclphysa.2016.04.025. S2CID 55598355.
9. Kaji, Daiya; Morita, Kosuke; Morimoto, Kouji; et al. (2017). "Study of the Reaction Ca + Cm → Lv* at RIKEN-GARIS". Journal of the Physical Society of Japan. 86 (3): 034201–1–7. Bibcode:2017JPSJ...86c4201K. doi:10.7566/JPSJ.86.034201.
10. ^ Armbruster, Peter & Munzenberg, Gottfried (1989). "Creating superheavy elements". Scientific American. 34: 36–42.
11. Barber, Robert C.; Gäggeler, Heinz W.; Karol, Paul J.; Nakahara, Hiromichi; Vardaci, Emanuele; Vogt, Erich (2009). "Discovery of the element with atomic number 112 (IUPAC Technical Report)". Pure and Applied Chemistry. 81 (7): 1331. doi:10.1351/PAC-REP-08-03-05.
12. Fleischmann, Martin; Pons, Stanley (1989). "Electrochemically induced nuclear fusion of deuterium". Journal of Electroanalytical Chemistry and Interfacial Electrochemistry. 261 (2). Elsevier: 301–308. doi:10.1016/0022-0728(89)80006-3.
13. ^ Scherer, U. W.; Brüchle, W; Brügger, M.; Frink, C.; Gäggeler, H.; Herrmann, G.; Kratz, J. V.; Moody, K. J.; Schädel, M.; Sümmerer, K.; Trautmann, N.; Wirth, G. (1990). "Reactions of Ar with U, U, and U at the barrier". Zeitschrift für Physik A. 335 (4): 421–430. Bibcode:1990ZPhyA.335..421S. doi:10.1007/BF01290190. S2CID 101394312.
14. ^ Hofmann, S.; Ninov, V.; Heßberger, F. P.; Armbruster, P.; Folger, H.; Münzenberg, G.; Schött, H. J.; Popeko, A. G.; Yeremin, A. V.; Andreyev, A. N.; Saro, S.; Janik, R.; Leino, M. (1995). "Production and decay of110". Zeitschrift für Physik A. 350 (4): 277–280. Bibcode:1995ZPhyA.350..277H. doi:10.1007/BF01291181. S2CID 125020220.
15. Ginter, T. N.; Gregorich, K.; Loveland, W.; Lee, D.; Kirbach, U.; Sudowe, R.; Folden, C.; Patin, J.; Seward, N.; Wilk, P.; Zielinski, P.; Aleklett, K.; Eichler, R.; Nitsche, H.; Hoffman, D. (2003). "Confirmation of production of element 110 by the Pb(Ni,n) reaction". Physical Review C. 67 (6): 064609. Bibcode:2003PhRvC..67f4609G. doi:10.1103/PhysRevC.67.064609.
16. Ginter, T. N.; Gregorich, K.; Loveland, W.; Lee, D.; Kirbach, U.; Sudowe, R.; Folden, C.; Patin, J.; Seward, N. (8 December 2002). "Confirmation of production of element 110 by the Pb(Ni,n) reaction". LBNL repositories. Retrieved 2008-03-02. (preprint)
17. Folden, C. M.; Gregorich, KE; Düllmann, ChE; Mahmud, H; Pang, GK; Schwantes, JM; Sudowe, R; Zielinski, PM; Nitsche, H; Hoffman, D. (2004). "Development of an Odd-Z-Projectile Reaction for Heavy Element Synthesis: Pb(Ni,n)Ds and Pb(Cu,n)111". Physical Review Letters. 93 (21): 212702. Bibcode:2004PhRvL..93u2702F. doi:10.1103/PhysRevLett.93.212702. PMID 15601003.
18. Morita, K.; Morimoto, K.; Kaji, D.; Haba, H.; Ideguchi, E.; Kanungo, R.; Katori, K.; Koura, H.; Kudo, H.; Ohnishi, T.; Ozawa, A.; Suda, T.; Sueki, K.; Tanihata, I.; Xu, H.; Yeremin, A. V.; Yoneda, A.; Yoshida, A.; Zhao, Y.-L.; Zheng, T. (2004). "Production and decay of the isotope Ds (Z = 110)". The European Physical Journal A. 21 (2): 257–263. Bibcode:2004EPJA...21..257M. doi:10.1140/epja/i2003-10205-1. S2CID 123077512.
19. George Johnson (15 October 2002). "At Lawrence Berkeley, Physicists Say a Colleague Took Them for a Ride". The New York Times.
20. ^ Hofmann; Heßberger, F. P.; Ackermann, D.; Antalic, S.; Cagarda, P.; Ćwiok, S.; Kindler, B.; Kojouharova, J.; Lommel, B.; Mann, R.; Münzenberg, G.; Popeko, A. G.; Saro, S.; Schött, H. J.; Yeremin, A. V. (2001). "The new isotope 110 and its decay products Hs and Sg" (PDF). Eur. Phys. J. A. 10 (1): 5–10. Bibcode:2001EPJA...10....5H. doi:10.1007/s100500170137. S2CID 124240926.
21. Ghiorso, A.; Lee, D.; Somerville, L.; et al. (1995). "Evidence for the possible synthesis of element 110 produced by the Co+Bi reaction". Physical Review C. 51 (5): R2293–R2297. Bibcode:1995PhRvC..51.2293G. doi:10.1103/PhysRevC.51.R2293. PMID 9970386.
22. Hofmann, Sigurd (2002). On Beyond Uranium. Taylor & Francis. p. 150. ISBN 0-415-28496-1.
23. Lazarev, Yu. A.; Lobanov, Yu.; Oganessian, Yu.; et al. (1996). "α decay of 110: Shell closure at N=162". Physical Review C. 54 (2): 620–625. Bibcode:1996PhRvC..54..620L. doi:10.1103/PhysRevC.54.620. PMID 9971385.
24. Flerov lab annual report 2004
25. Emsley, John (2011). Nature's Building Blocks: An A–Z Guide to the Elements (New ed.). New York, NY: Oxford University Press. p. 590. ISBN 978-0-19-960563-7.
26. ^ Sonzogni, Alejandro. "Interactive Chart of Nuclides". National Nuclear Data Center: Brookhaven National Laboratory. Archived from the original on 2017-07-14. Retrieved 2008-06-06.
27. ^ "New darmstadtium isotope discovered at Superheavy Element Factory". Joint Institute for Nuclear Research. 27 February 2023. Retrieved 29 March 2023.
28. Hofmann, S.; Ninov, V.; Heßberger, F. P.; Armbruster, P.; Folger, H.; Münzenberg, G.; Schött, H. J.; Popeko, A. G.; Yeremin, A. V.; Saro, S.; Janik, R.; Leino, M. (1996). "The new element 112". Zeitschrift für Physik A. 354 (1): 229–230. Bibcode:1996ZPhyA.354..229H. doi:10.1007/BF02769517. S2CID 119975957.
29. Public Affairs Department (26 October 2010). "Six New Isotopes of the Superheavy Elements Discovered: Moving Closer to Understanding the Island of Stability". Berkeley Lab. Retrieved 2011-04-25.
30. Yeremin, A. V.; et al. (1999). "Synthesis of nuclei of the superheavy element 114 in reactions induced by Ca". Nature. 400 (6741): 242–245. Bibcode:1999Natur.400..242O. doi:10.1038/22281. S2CID 4399615.
31. ^ Oganessian, Y. T.; Utyonkov, V.; Lobanov, Y.; Abdullin, F.; Polyakov, A.; Shirokovsky, I.; Tsyganov, Y.; Gulbekian, G.; Bogomolov, S.; Gikal, B.; et al. (2004). "Measurements of cross sections for the fusion-evaporation reactions Pu(Ca,xn)114 and Cm(Ca,xn)116". Physical Review C. 69 (5): 054607. Bibcode:2004PhRvC..69e4607O. doi:10.1103/PhysRevC.69.054607.
32. see Oganesson
33. Hofmann, S (1998). "New elements - approaching". Reports on Progress in Physics. 61 (6): 639–689. Bibcode:1998RPPh...61..639H. doi:10.1088/0034-4885/61/6/002. S2CID 250756383.
34. see Flerov lab annual report 2004
35. P. Roy Chowdhury; C. Samanta; D. N. Basu (2006). "α decay half-lives of new superheavy elements". Phys. Rev. C. 73 (1): 014612. arXiv:nucl-th/0507054. Bibcode:2006PhRvC..73a4612C. doi:10.1103/PhysRevC.73.014612. S2CID 118739116.
36. C. Samanta; P. Roy Chowdhury; D. N. Basu (2007). "Predictions of alpha decay half lives of heavy and superheavy elements". Nucl. Phys. A. 789 (1–4): 142–154. arXiv:nucl-th/0703086. Bibcode:2007NuPhA.789..142S. doi:10.1016/j.nuclphysa.2007.04.001. S2CID 7496348.
37. P. Roy Chowdhury; Samanta, C.; Basu, D. N. (2008). "Search for long lived heaviest nuclei beyond the valley of stability". Phys. Rev. C. 77 (4): 044603. arXiv:0802.3837. Bibcode:2008PhRvC..77d4603C. doi:10.1103/PhysRevC.77.044603. S2CID 119207807.
38. Chowdhury, P. Roy; C. Samanta; D. N. Basu (2008). "Nuclear half-lives for α -radioactivity of elements with 100 ≤ Z ≤ 130". Atomic Data and Nuclear Data Tables. 94 (6): 781–806. arXiv:0802.4161. Bibcode:2008ADNDT..94..781C. doi:10.1016/j.adt.2008.01.003. S2CID 96718440.
39. Feng, Zhao-Qing; Jin, Gen-Ming; Li, Jun-Qing; Scheid, Werner (2007). "Formation of superheavy nuclei in cold fusion reactions". Physical Review C. 76 (4): 044606. arXiv:0707.2588. Bibcode:2007PhRvC..76d4606F. doi:10.1103/PhysRevC.76.044606. S2CID 711489.
40. ^ Feng, Z; Jin, G; Li, J; Scheid, W (2009). "Production of heavy and superheavy nuclei in massive fusion reactions". Nuclear Physics A. 816 (1–4): 33–51. arXiv:0803.1117. Bibcode:2009NuPhA.816...33F. doi:10.1016/j.nuclphysa.2008.11.003. S2CID 18647291.
41. ^ Feng, Z.; Jin, G.; Li, J. (2009). "Production of new superheavy Z=108-114 nuclei with U, Pu and Cm targets". Physical Review C. 80: 057601. arXiv:0912.4069. doi:10.1103/PhysRevC.80.057601. S2CID 118733755.

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Table of nuclides Categories: Isotopes Tables of nuclides Metastable isotopes Isotopes by element

• Isotopes of darmstadtium
• Darmstadtium
• Lists of isotopes by element