Neodymium-161

Properties and data of the isotope ¹⁶¹Nd.

Content

General data

Name of the isotope:Neodymium-161; Nd-161Symbol:¹⁶¹Nd or 16160NdMass number A:161 (= number of nucleons)Atomic number Z:60 (= number of protons)Neutrons N:101Isotopic mass:160.95428(43) u (atomic weight of Neodymium-161)Nuclide mass:160.9213677 u (calculated nuclear mass without electrons)Mass excess:-42.58791 MeVMass defect:1.390378436 u (per nucleus)Nuclear binding energy:1295.12917086 MeV (per nucleus)
8.04428056 MeV (average binding energy per nucleon)Separation energy:S_N = 3.53(50) MeV (first neutron)
S_P = 13.36(56) MeV (first proton)Half-life:0.22(8) sDecay constant λ:3.1506690025452 s^-1Specific activity α:1.185860783522 × 10⁺²² Bq g^-1
320502914465.59 Ci g^-1Spin and parity:
(nuclear angular momentum)(1/2-)

Radioactive Decay

Half-life T_½ = 0.22(8) s respectively 2.2 × 10^-1 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹⁶¹Pm	100 %	7.65(50) MeV
β^-, n	¹⁶⁰Pm	?	2.34(45) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 101) and isobaric (same nucleon number A = 161) with Neodymium-161. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 101	Isobar A = 161
59	¹⁶⁰Pr
60	¹⁶¹Nd	¹⁶¹Nd
61	¹⁶²Pm	¹⁶¹Pm
62	¹⁶³Sm	¹⁶¹Sm
63	¹⁶⁴Eu	¹⁶¹Eu
64	¹⁶⁵Gd	¹⁶¹Gd
65	¹⁶⁶Tb	¹⁶¹Tb
66	¹⁶⁷Dy	¹⁶¹Dy
67	¹⁶⁸Ho	¹⁶¹Ho
68	¹⁶⁹Er	¹⁶¹Er
69	¹⁷⁰Tm	¹⁶¹Tm
70	¹⁷¹Yb	¹⁶¹Yb
71	¹⁷²Lu	¹⁶¹Lu
72	¹⁷³Hf	¹⁶¹Hf
73	¹⁷⁴Ta	¹⁶¹Ta
74	¹⁷⁵W	¹⁶¹W
75	¹⁷⁶Re	¹⁶¹Re
76	¹⁷⁷Os	¹⁶¹Os
77	¹⁷⁸Ir
78	¹⁷⁹Pt
79	¹⁸⁰Au
80	¹⁸¹Hg
81	¹⁸²Tl
82	¹⁸³Pb
83	¹⁸⁴Bi