Cerium-130

Properties and data of the isotope ¹³⁰Ce.

Contents

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

Literature

Cerium-130 is a radioisotope of the chemical element cerium, which has 72 neutrons in its atomic nucleus in addition to the element-specific 58 protons; the sum of the number of these atomic nucleus building blocks results in a mass number of 130. The very short-lived, only artificially produced, unstable and thus radioactive nuclide has no practical significance; the study of ¹³⁰Ce is exclusively for academic purposes.

Cerium-130 was first described in 1965. The isotope was produced by proton bombardment of lanthanum with proton energies between 100 and 150 MeV in (p,xn) reactions. Identification was carried out using γ-scintillation spectra of chemically separated samples. The investigation focused primarily on barium isotopes, with the decay of a newly generated cerium activity being attributed to cerium-130 [1].

See also: List of individual Cerium isotopes (and general data sources).

General data

Name of the isotope:Cerium-130; Ce-130Symbol:¹³⁰Ce or 13058CeMass number A:130 (= number of nucleons)Atomic number Z:58 (= number of protons)Neutrons N:72Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.2413793103448 (= neutron-proton ratio)Neutron excess (N-Z):14Isotopic mass:129.91474(3) u (atomic weight of Cerium-130)Nuclide mass:129.8829246 u (calculated nuclear mass without electrons)Mass excess:-79.41918 MeVMass defect:1.162985808 u (per nucleus)Nuclear binding energy:1083.31430224 MeV (per nucleus)
8.33318694 MeV (average binding energy per nucleon)Separation energy:S_N = 11.207(40) MeV (first neutron)
S_P = 4.388(35) MeV (first proton)Half-life:22.9(5) minDecay constant λ:0.00050447393053853 s^-1Specific activity α:2.355048891371 × 10⁺¹⁸ Bq g^-1
63649970.037062 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1965

Radioactive Decay

Half-life T_½ = 22.9(5) min (minutes) respectively 1.374 × 10³ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
EC/β⁺	¹³⁰La	100 %	2.204(38) MeV

Parent Nuclides

Direct parent isotope is: ¹³⁰Pr.

Nuclear Isomers

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

Nuclear Isomer	Excitation Energy	Half-life	Spin
^130mCe	2453.6(3) keV	100(8) ns	(7-)

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 72) and isobaric (same nucleon number A = 130) with Cerium-130. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 72	Isobar A = 130
40	¹¹²Zr
41	¹¹³Nb
42	¹¹⁴Mo
43	¹¹⁵Tc
44	¹¹⁶Ru
45	¹¹⁷Rh
46	¹¹⁸Pd
47	¹¹⁹Ag	¹³⁰Ag
48	¹²⁰Cd	¹³⁰Cd
49	¹²¹In	¹³⁰In
50	¹²²Sn	¹³⁰Sn
51	¹²³Sb	¹³⁰Sb
52	¹²⁴Te	¹³⁰Te
53	¹²⁵I	¹³⁰I
54	¹²⁶Xe	¹³⁰Xe
55	¹²⁷Cs	¹³⁰Cs
56	¹²⁸Ba	¹³⁰Ba
57	¹²⁹La	¹³⁰La
58	¹³⁰Ce	¹³⁰Ce
59	¹³¹Pr	¹³⁰Pr
60	¹³²Nd	¹³⁰Nd
61	¹³³Pm	¹³⁰Pm
62	¹³⁴Sm	¹³⁰Sm
63	¹³⁵Eu	¹³⁰Eu
64	¹³⁶Gd
65	¹³⁷Tb
66	¹³⁸Dy

External data and identifiers

Adopted Levels, Gammas:NuDat 130Ce

Literature and References

[1] - G. Gerschel, M. Pautrat, K. A. Ricci, J. Teillac, J. Van Horenbeeck:
Nuclear spectroscopy of some neutrondeficient even barium isotopes.
In: Il Nuovo Cimento, 37, 1756 - 1760, (1965), DOI 10.1007/BF02783377.