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Cadmium-115

Properties and data of the isotope 115Cd.


Contents

See also: list of Cadmium isotopes.

 

General data

Name of the isotope:Cadmium-115; Cd-115Symbol:115Cd or 11548CdMass number A:115 (= number of nucleons)Atomic number Z:48 (= number of protons)Neutrons N:67Isotopic mass:114.9054374(7) u (atomic weight of Cadmium-115)Nuclide mass:114.879107 u (calculated nuclear mass without electrons)Mass excess:-88.08449 MeVMass defect:1.050713508 u (per nucleus)Nuclear binding energy:978.73332842 MeV (per nucleus)
8.51072459 MeV (average binding energy per nucleon)
Separation energy:SN = 6.1409(6) MeV (first neutron)
SP = 10.443(5) MeV (first proton)
Half-life:53.46(5) hDecay constant λ:3.601587794404 × 10-6 s-1Specific activity α:1.902567457660 × 10+16 Bq g-1
514207.42098943 Ci g-1
Spin and parity:
(nuclear angular momentum)
1/2+Magnetic dipole moment:μ(μN) = -0.6483(2)Nuclear g-factor:gl = -1.2966Charge radius:4.6114(46) femtometer fmYear of discovery:1939

 

Radioactive Decay

Half-life T½ = 53.46(5) h (hours) respectively 1.92456 × 105 seconds s.

Decay
mode
DaughterProbabilityDecay energyγ energy
(intensity)
β-115In100 %1.4519(7) MeV

 

Parent Nuclides

Direct parent isotope is: 115Ag.

 

Nuclear Isomers

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

Nuclear IsomerExcitation EnergyHalf-lifeSpin
115mCd181.0(5) keV44.56(24) d(11/2)-
115m+Cd

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 67) and isobaric (same nucleon number A = 115) with Cadmium-115. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

ZIsotone N = 67Isobar A = 115
38105Sr
39106Y
40107Zr
41108Nb115Nb
42109Mo115Mo
43110Tc115Tc
44111Ru115Ru
45112Rh115Rh
46113Pd115Pd
47114Ag115Ag
48115Cd115Cd
49116In115In
50117Sn115Sn
51118Sb115Sb
52119Te115Te
53120I115I
54121Xe115Xe
55122Cs115Cs
56123Ba115Ba
57124La
58125Ce
59126Pr
60127Nd
61128Pm
62129Sm
63130Eu

 

External data and identifiers

Adopted Levels, Gammas:NuDat 115Cd

 


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Last update: 2020-10-16


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