About   |   More   |   Search

Isotopes of Darmstadtium

List, data and properties of all known isotopes of Darmstadtium as well as radioactive decay products and intermediate products.

 

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

 

Atomic Properties

Isotope
Nuclide
ZANNameAtomic Mass
[Nuclear Mass]
{Mass Excess}
Spin I
(h/2π)
μParent
123456789
267Ds110267157Darmstadtium-267267.14373(14) u
[267.0833963 u]
{133.88363 MeV}
9/2+
268Ds110268158Darmstadtium-268
269Ds110269159Darmstadtium-269269.14475(3) u
[269.0844163 u]
{134.83376 MeV}
3/2+
270Ds110270160Darmstadtium-270270.14458(5) u
[270.0842463 u]
{134.6754 MeV}
0+
270mDs110270160Darmstadtium-270m270.14458(5) u
[270.0842463 u]
{134.6754 MeV}
271Ds110271161Darmstadtium-271271.14595(10) u
[271.0856163 u]
{135.95155 MeV}
11/2-
271mDs110271161Darmstadtium-271m271.14595(10) u
[271.0856163 u]
{135.95155 MeV}
9/2+
272Ds110272162Darmstadtium-272
273Ds110273163Darmstadtium-273273.14853(14) u
[273.0881963 u]
{138.3548 MeV}
13/2-
274Ds110274164Darmstadtium-274
275Ds110275165Darmstadtium-275
276Ds110276166Darmstadtium-276
277Ds110277167Darmstadtium-277277.15581(41) u
[277.0954763 u]
{145.13608 MeV}
11/2+
278Ds110278168Darmstadtium-278
279Ds110279169Darmstadtium-279279.16009(64) u
[279.0997563 u]
{149.12287 MeV}
280Ds110280170Darmstadtium-280280.16131(89) u
[280.1009763 u]
{150.2593 MeV}
0+
281Ds110281171Darmstadtium-281281.16471(62) u
[281.1043763 u]
{153.42638 MeV}
3/2+

 

Radioactive Decay Properties

IsotopeRadioactive DecayAEExtern
Half-lifeDecay ModeProbabilityEnergy
1101112131415
Ds-2673 μsα → 263Hsca. 100 %11.78(5) MeVAL
Ds-268- unbekannt -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 %

1140 keVAL
Ds-2711.63 msα → 267Hs100 %10.870 MeVAL
Ds-271m69 msα → 267Hs
IT
> 0 %
?

AL
Ds-272- unbekannt -AL
Ds-2730.17 msα → 269Hs100 %11.370 MeVAL
Ds-274- unbekannt -AL
Ds-275- unbekannt -AL
Ds-276- unbekannt -AL
Ds-2774.1 msα → 273Hs100 %10.820 MeVAL
Ds-278- unbekannt -AL
Ds-2790.18 sSF
α → 275Hs
ca. 90 %
ca. 10 %

10.080 MeV
AL
Ds-2806.7 msSF AL
Ds-2819.6 sSF ca. 100 %AL

 

Notes (related to the columns):

1 - nuclide, isotope symbol.
2 - Z = number of protons (atomic number).
3 - Mass number A.
4 - N = number of neutrons.
5 - Identification of the Darmstadtium isotope.
6 - 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.
7 - Nuclear spin I, unit: h/2π.
8 - Nuclear magnetic moment μmag.
9 - 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.
10 - Decay: Half-live of the Darmstadtium isotope (a = years; ; d = days; h = hours; min = minutes; s = seconds).
11 - Decay: 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.
12 - Decay percentage in percent (%).
13 - Decay energy; Particle energy related to decay type.
14 - AE = Excitation energy for metastable nuclei.
15 - 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.

 


Category: Isotopes

Last update: 05.07.2020



© 1996 - 2022 Internetchemistry




I agree!

This site uses cookies. By using this website, you agree to the use of cookies! Learn more ...