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Isotopes of Darmstadtium

List, data and properties of all known isotopes of Darmstadtium.

Content
Atomic properties
Decay properties
NMR active nuclides
Radiation protection
References
Darmstadtium isotopes

All atomic nuclei of the chemical element darmstadtium are summarized under darmstadtium isotopes; these all consist of an atomic nucleus with 110 protons and, in the uncharged state, 110 electrons. The difference between the individual darmstadtium isotopes is based on the number of neutrons in the nucleus.

The individual darmstadtium isotopes have no technical or medical significance.

 

Isotope Table: Darmstadtium

The two following tables list the most important data and properties of the Darmstadtium isotopes. Further information on the individual Darmstadtium isotopes is listed on separate pages and can be accessed via the link in column 1.

 

Atomic Properties

Isotope
Nuclide		ENAtomic Mass
[Nuclear Mass]
{Mass Excess}		Spin I
(h/2π)		Parent
123456
Darmstadtium-267267110Ds157267.14373(14) u
[267.0833963 u]
{133.88363 MeV}		9/2+
Darmstadtium-268268110Ds158
Darmstadtium-269269110Ds159269.14475(3) u
[269.0844163 u]
{134.83376 MeV}		3/2+
Darmstadtium-270270110Ds160270.14458(5) u
[270.0842463 u]
{134.6754 MeV}		0+
Darmstadtium-270m270m110Ds160270.14458(5) u
[270.0842463 u]
{134.6754 MeV}
Darmstadtium-271271110Ds161271.14595(10) u
[271.0856163 u]
{135.95155 MeV}		11/2-
Darmstadtium-271m271m110Ds161271.14595(10) u
[271.0856163 u]
{135.95155 MeV}		9/2+
Darmstadtium-272272110Ds162
Darmstadtium-273273110Ds163273.14853(14) u
[273.0881963 u]
{138.3548 MeV}		13/2-
Darmstadtium-274274110Ds164
Darmstadtium-275275110Ds165
Darmstadtium-276276110Ds166276.15303(59) u
[276.0926963 u]
{142.54653 MeV}		0+
Darmstadtium-277277110Ds167277.15581(41) u
[277.0954763 u]
{145.13608 MeV}		11/2+
Darmstadtium-278278110Ds168
Darmstadtium-279279110Ds169279.16009(64) u
[279.0997563 u]
{149.12287 MeV}
Darmstadtium-280280110Ds170280.16131(89) u
[280.1009763 u]
{150.2593 MeV}		0+
Darmstadtium-281281110Ds171281.16455(53) u
[281.1042163 u]
{153.27734 MeV}		3/2+
Darmstadtium-282282110Ds172282.16617(32) u
[282.1058363 u]
{154.78636 MeV}		0+

 

Radioactive Decay Properties

IsotopeRadioactive DecayExtern
Half-lifeDecay ModeProbabilityEnergy
789101112
Ds-2673 μsα → 263Hsca. 100 %11.78(5) MeVAL
Ds-268- unknown -AL
Ds-269230 μsα → 265Hs100 %11.510 MeVAL
Ds-2700.20 msα → 266Hs
SF div		> 99.8 %
< 0.2 %		11.117 MeV
AL
Ds-270mca. 6 msα → 266Hs
IT 		> 70 %
< 30 %
AL
Ds-2711.63 msα → 267Hs100 %10.870 MeVAL
Ds-271m69 msα → 267Hs
IT 		> 0 %
?
AL
Ds-272- unknown -AL
Ds-2730.17 msα → 269Hs100 %11.370 MeVAL
Ds-274- unknown -AL
Ds-275- unknown -AL
Ds-2760.15 msα → 272Hs
SF var		43 %
57 %		10.75 MeV
AL
Ds-2774.1 msα → 273Hs100 %10.820 MeVAL
Ds-278- unknown -AL
Ds-2790.18 sSF
α → 275Hs		ca. 90 %
ca. 10 %
10.080 MeV		AL
Ds-2806.7 msSF AL
Ds-28112 sSF div
α → 277Hs		94 %
6 %
9.473(208) MeV		AL
Ds-28266 sα → 278Hs
SF div		ca. 100 %
?		9.145(424) MeV

 

Notes (related to the columns):

1 - name of the nuclide, isotope.
2 - E: isotope symbol with mass number (superscript; number of nucleons) and Atomic number (subscript; number of protons).
3 - N: number of neutrons.
4 - relative atomic mass of the Darmstadtium isotope (isotopic mass including electrons) and the mass of the atomic nucleus in square brackets (nuclear mass, nuclide mass without electrons), each related to 12C = 12.00000 [2]. In addition, the mass excess is given in MeV.
5 - nuclear spin I, unit: h/2π.
6 - source nuclides: Possible, assumed or actual source nuclides (mother nuclides, parent nuclides). If applicable, the corresponding decay modes can be found in the data for the respective starting nuclide.

7 - isotope notation in short form.
8 - decay: half-live of the Darmstadtium isotope (a = years; ; d = days; h = hours; min = minutes; s = seconds).
9 - decay mode: type of decay into the respective daughter nuclides with n = neutron emission; p = proton emission; α = alpha decay; β- = beta minus decay with electron emission; EC = electron capture; β+ = positron emission; ε = β+ and/or EC; Iso = isomeric transition; CD = cluster decay; SF = spontaneous decay.
10 - decay probability in percent (%).
11 - decay energy; Particle energy related to decay type.
12 - other information and notes: AL = Adopted Levels (link to external data [1]).

Miscellaneous:

()- Numbers in brackets: uncertainty to represent the spread of the reported value.
~ - Theoretical values or systematic trends.
  - unlisted-: Nuclides that have already been mentioned in the literature but for some reason can no longer be found in the current nuclide tables because their discovery e.g. has not confirmed.

 

Literature Sources and References

Properties of the Darmstadtium nucleides

[1] - NuDat: National Nuclear Data Center, Brookhaven National Laboratory, based on ENSDF and the Nuclear Wallet Cards.

[2] - G. Audi et. al.: The NUBASE evaluation of nuclear and decay properties. Nuclear Physics, (2003), DOI 10.1016/j.nuclphysa.2003.11.001.

[3] - Live Chart of Nuclides. Nuclear structure and decay data.

Darmstadtium: NMR properties

[4] - N. J. Stone: Table of nuclear magnetic dipole and electric quadrupole moments. Atomic Data and Nuclear Data Tables, (2005), DOI 10.1016/j.adt.2005.04.001.

[5] - Pekka Pyykkö: Year-2008 nuclear quadrupole moments. Molecular Physics, (2008), DOI 10.1080/00268970802018367.

[6] - Pekka Pyykkö: Year-2017 nuclear quadrupole moments. Molecular Physics, (2018), DOI 10.1080/00268976.2018.1426131.

[7] - N. J. Stone: Table of recommended nuclear magnetic dipole moments. IAEA, (2019).

More sources:

[8] - Isotopic abundances, atomic weights and isotopic masses: see respective keyword.

 

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Last update: 2022-12-12

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