Samarium-130

Properties and data of the isotope ¹³⁰Sm.

Content

General data

Name of the isotope:Samarium-130; Sm-130Symbol:¹³⁰Sm or 13062SmMass number A:130 (= number of nucleons)Atomic number Z:62 (= number of protons)Neutrons N:68Isotopic mass:129.94900(43) u (atomic weight of Samarium-130)Nuclide mass:129.9149907 u (calculated nuclear mass without electrons)Mass excess:-47.50619 MeVMass defect:1.125366272 u (per nucleus)Nuclear binding energy:1048.27193017 MeV (per nucleus)
8.06363023 MeV (average binding energy per nucleon)Separation energy:S_N = 13.58(64) MeV (first neutron)
S_P = 1.91(50) MeV (first proton)Half-life:1 sDecay constant λ:0.69314718055995 s^-1Specific activity α:3.235837176744 × 10⁺²¹ Bq g^-1
87455058830.924 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1999

Radioactive Decay

Half-life T_½ = 1 s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EE/β⁺	¹³⁰Pm	?	7.89(45) MeV

Parent Nuclides

Direct parent isotope is: ¹³⁰Eu.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 68) and isobaric (same nucleon number A = 130) with Samarium-130. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 68	Isobar A = 130
38	¹⁰⁶Sr
39	¹⁰⁷Y
40	¹⁰⁸Zr
41	¹⁰⁹Nb
42	¹¹⁰Mo
43	¹¹¹Tc
44	¹¹²Ru
45	¹¹³Rh
46	¹¹⁴Pd
47	¹¹⁵Ag	¹³⁰Ag
48	¹¹⁶Cd	¹³⁰Cd
49	¹¹⁷In	¹³⁰In
50	¹¹⁸Sn	¹³⁰Sn
51	¹¹⁹Sb	¹³⁰Sb
52	¹²⁰Te	¹³⁰Te
53	¹²¹I	¹³⁰I
54	¹²²Xe	¹³⁰Xe
55	¹²³Cs	¹³⁰Cs
56	¹²⁴Ba	¹³⁰Ba
57	¹²⁵La	¹³⁰La
58	¹²⁶Ce	¹³⁰Ce
59	¹²⁷Pr	¹³⁰Pr
60	¹²⁸Nd	¹³⁰Nd
61	¹²⁹Pm	¹³⁰Pm
62	¹³⁰Sm	¹³⁰Sm
63	¹³¹Eu	¹³⁰Eu