Neodymium-148

Properties and data of the isotope ¹⁴⁸Nd.

Contents

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

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

General data

Name of the isotope:Neodymium-148; Nd-148Symbol:¹⁴⁸Nd or 14860NdMass number A:148 (= number of nucleons)Atomic number Z:60 (= number of protons)Neutrons N:88Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.4666666666667 (= neutron-proton ratio)Neutron excess (N-Z):28Isotopic mass:147.91690(2) u (atomic weight of Neodymium-148)Nuclide mass:147.8839877 u (calculated nuclear mass without electrons)Mass excess:-77.40715 MeVMass defect:1.315114528 u (per nucleus)Nuclear binding energy:1225.02129214 MeV (per nucleus)
8.27717089 MeV (average binding energy per nucleon)Separation energy:S_N = 7.3326(17) MeV (first neutron)
S_P = 9.253(16) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)0+Charge radius:4.9999(36) femtometer fmYear of discovery:1937

Radioactive Decay

Half-life T_½ = stable.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
2 β^-	¹⁴⁸Sm	?

Parent Nuclides

Direct parent isotopes are: ¹⁴⁸Pm, ¹⁴⁸Pr.

Occurrence

Comparison of the natural Neodymium isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):

	Atomic Mass m_a	Quantity	Half-life	Spin
Neodymium Isotopic mixture	144.242 u	100 %
Isotope ¹⁴²Nd	141.90773(2) u	27.153(40) %	stable	0+
Isotope ¹⁴³Nd	142.90982(2) u	12.173(26) %	stable	7/2-
Isotope ¹⁴⁴Nd	143.9100928(13) u	23.798(19) %	2.29(16) × 10¹⁵ a	0+
Isotope ¹⁴⁵Nd	144.91258(2) u	8.293(12) %	stable	7/2-
Isotope ¹⁴⁶Nd	145.91312(2) u	17.189(32) %	stable	0+
Isotope ¹⁴⁸Nd	147.91690(2) u	5.756(21) %	stable	0+
Isotope ¹⁵⁰Nd	149.92090(2) u	5.638(28) %	6.7(7) × 10¹⁸ a	0+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 88) and isobaric (same nucleon number A = 148) with Neodymium-148. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 88	Isobar A = 148
49	¹³⁷In
50	¹³⁸Sn
51	¹³⁹Sb
52	¹⁴⁰Te
53	¹⁴¹I
54	¹⁴²Xe	¹⁴⁸Xe
55	¹⁴³Cs	¹⁴⁸Cs
56	¹⁴⁴Ba	¹⁴⁸Ba
57	¹⁴⁵La	¹⁴⁸La
58	¹⁴⁶Ce	¹⁴⁸Ce
59	¹⁴⁷Pr	¹⁴⁸Pr
60	¹⁴⁸Nd	¹⁴⁸Nd
61	¹⁴⁹Pm	¹⁴⁸Pm
62	¹⁵⁰Sm	¹⁴⁸Sm
63	¹⁵¹Eu	¹⁴⁸Eu
64	¹⁵²Gd	¹⁴⁸Gd
65	¹⁵³Tb	¹⁴⁸Tb
66	¹⁵⁴Dy	¹⁴⁸Dy
67	¹⁵⁵Ho	¹⁴⁸Ho
68	¹⁵⁶Er	¹⁴⁸Er
69	¹⁵⁷Tm	¹⁴⁸Tm
70	¹⁵⁸Yb	¹⁴⁸Yb
71	¹⁵⁹Lu
72	¹⁶⁰Hf
73	¹⁶¹Ta
74	¹⁶²W
75	¹⁶³Re
76	¹⁶⁴Os
77	¹⁶⁵Ir
78	¹⁶⁶Pt