Neodymium-162

Properties and data of the isotope ¹⁶²Nd.

Contents

Neodymium-162 is a radioisotope of the chemical element neodymium, which has 102 neutrons in the atomic nucleus in addition to the element-specific 60 protons, resulting in the mass number 162. The very short-lived, only artificially producible, unstable and therefore radioactive nuclide has no practical significance; dealing with ¹⁶²Nd is for academic purposes only.

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

General data

Name of the isotope:Neodymium-162; Nd-162Symbol:¹⁶²Nd or 16260NdMass number A:162 (= number of nucleons)Atomic number Z:60 (= number of protons)Neutrons N:102Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.7 (= neutron-proton ratio)Neutron excess (N-Z):42Isotopic mass:161.95812(43) u (atomic weight of Neodymium-162)Nuclide mass:161.9252077 u (calculated nuclear mass without electrons)Mass excess:-39.01097 MeVMass defect:1.395203352 u (per nucleus)Nuclear binding energy:1299.62355117 MeV (per nucleus)
8.0223676 MeV (average binding energy per nucleon)Separation energy:S_N = 4.851(565) MeV (first neutron)
S_P = 13.809(640) MeV (first proton)Half-life:0.31(20) sDecay constant λ:2.2359586469676 s^-1Specific activity α:8.363514241634 × 10⁺²¹ Bq g^-1
226040925449.59 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:2012

Radioactive Decay

Half-life T_½ = 0.31(20) s respectively 3.1 × 10^-1 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹⁶²Pm	100 %	7.030(500) MeV
β^-, n	¹⁶¹Pm	?	3.005(400) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 102) and isobaric (same nucleon number A = 162) with Neodymium-162. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 102	Isobar A = 162
60	¹⁶²Nd	¹⁶²Nd
61	¹⁶³Pm	¹⁶²Pm
62	¹⁶⁴Sm	¹⁶²Sm
63	¹⁶⁵Eu	¹⁶²Eu
64	¹⁶⁶Gd	¹⁶²Gd
65	¹⁶⁷Tb	¹⁶²Tb
66	¹⁶⁸Dy	¹⁶²Dy
67	¹⁶⁹Ho	¹⁶²Ho
68	¹⁷⁰Er	¹⁶²Er
69	¹⁷¹Tm	¹⁶²Tm
70	¹⁷²Yb	¹⁶²Yb
71	¹⁷³Lu	¹⁶²Lu
72	¹⁷⁴Hf	¹⁶²Hf
73	¹⁷⁵Ta	¹⁶²Ta
74	¹⁷⁶W	¹⁶²W
75	¹⁷⁷Re	¹⁶²Re
76	¹⁷⁸Os	¹⁶²Os
77	¹⁷⁹Ir
78	¹⁸⁰Pt
79	¹⁸¹Au
80	¹⁸²Hg
81	¹⁸³Tl
82	¹⁸⁴Pb
83	¹⁸⁵Bi
84	¹⁸⁶Po

Literature and References

[1] - M. Thoennessen:
2017 Update of the discoveries of nuclides.
In: International Journal of Modern Physics E, (2018), DOI 10.1142/S0218301318300023.