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Ytterbium-175

Properties and data of the isotope 175Yb.


Contents

Ytterbium-175 is a radioactive isotope of the chemical element ytterbium, which, in addition to the element-specific 70 protons, has 105 neutrons in the atomic nucleus; this results in the mass number 175. The very short-lived, only artificially producible, unstable and therefore radioactive nuclide 175Yb can be generated by neutron capture from Ytterbium-174.

174Yb(n, γ)175Yb → 175Lu (stable); σ= 69 Barn.

The decay properties of the Radiolanthanide could be of interest for medical applications.

See also: list of Ytterbium isotopes.

 

General data

Name of the isotope:Ytterbium-175; Yb-175Symbol:175Yb or 17570YbMass number A:175 (= number of nucleons)Atomic number Z:70 (= number of protons)Neutrons N:105Isotopic mass:174.94128191(8) u (atomic weight of Ytterbium-175)Nuclide mass:174.9028848 u (calculated nuclear mass without electrons)Mass excess:-54.69555 MeVMass defect:1.51628651 u (per nucleus)Nuclear binding energy:1412.41178635 MeV (per nucleus)
8.07092449 MeV (average binding energy per nucleon)
Separation energy:SN = 5.82235(7) MeV (first neutron)
SP = 8.120(45) MeV (first proton)
Half-life:4.185(1) dDecay constant λ:1.916974148634 × 10-11 s-1Specific activity α:66346484758.251 Bq g-1
1.7931482367095 Ci g-1
Spin and parity:
(nuclear angular momentum)
(7/2-)Magnetic dipole moment:μ(μN) = 0.58(8)Nuclear g-factor:gl = 0.16571428571429Charge radius:5.3135(61) femtometer fmYear of discovery:1945

 

Radioactive Decay

The half-life of ytterbium-175 was redetermined in 2021 [1]: It is therefore 4.1615(30) days (= 3.595536 × 10 5 seconds); this corresponds to a relative deviation of 0.56% from the above value (ENSDF 2004).

Half-life T½ = 4.185(1) d respectively 361584 × 105 seconds s.

Decay
mode
DaughterProbabilityDecay energyγ energy
(intensity)
β-175Lu100 %0.4701(12) MeV

 

Parent Nuclides

Direct parent isotope is: 175Tm.

 

Nuclear Isomers

Nuclear isomers or excited states with the activation energy in keV related to the ground state.

Nuclear IsomerExcitation EnergyHalf-lifeSpin
175mYb514.866(4) keV68.2(3) ms1/2-

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 105) and isobaric (same nucleon number A = 175) with Ytterbium-175. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

ZIsotone N = 105Isobar A = 175
63168Eu
64169Gd
65170Tb
66171Dy
67172Ho175Ho
68173Er175Er
69174Tm175Tm
70175Yb175Yb
71176Lu175Lu
72177Hf175Hf
73178Ta175Ta
74179W175W
75180Re175Re
76181Os175Os
77182Ir175Ir
78183Pt175Pt
79184Au175Au
80185Hg175Hg
81186Tl
82187Pb
83188Bi
84189Po
85190At

 

External data and identifiers

Adopted Levels, Gammas:NuDat 175Yb

 

Literature and References

[1] - M. Teresa Durán, Frédéric Juget, Youcef Nedjadi et al.:
Ytterbium-175 half-life determination.
In: Applied Radiation and Isotopes, (2021), DOI 10.1016/j.apradiso.2021.109893.

 


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Last update: 2023-05-05


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