Neodymium-134m

Properties and data of the isotope ¹³⁴Nd.

Content

General data

Name of the isotope:Neodymium-134m; Nd-134mSymbol:¹³⁴Nd or 13460NdMass number A:134 (= number of nucleons)Atomic number Z:60 (= number of protons)Neutrons N:74Isotopic mass:133.918790(13) u (atomic weight of Neodymium-134m)
Excitation energy: 2293.0(4) keVNuclide mass:133.8858777 u (calculated nuclear mass without electrons)Mass excess:-75.64663 MeVMass defect:1.191915704 u (per nucleus)Nuclear binding energy:1110.26232678 MeV (per nucleus)
8.28553975 MeV (average binding energy per nucleon)Half-life:410(30) μsDecay constant λ:1690.6028794145 s^-1Specific activity α:7.654923818081 × 10⁺²⁴ Bq g^-1
2.068898329211 × 10⁺¹⁴ Ci g^-1Spin and parity:
(nuclear angular momentum)(8)-

Radioactive Decay

Half-life T_½ = 410(30) μs respectively 4.10 × 10^-4 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
Iso	¹³⁴Nd	100 %

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
¹³⁴Nd		8.5(15) min	0+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 74) and isobaric (same nucleon number A = 134) with Neodymium-134m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 74	Isobar A = 134
41	¹¹⁵Nb
42	¹¹⁶Mo
43	¹¹⁷Tc
44	¹¹⁸Ru
45	¹¹⁹Rh
46	¹²⁰Pd
47	¹²¹Ag
48	¹²²Cd	¹³⁴Cd
49	¹²³In	¹³⁴In
50	¹²⁴Sn	¹³⁴Sn
51	¹²⁵Sb	¹³⁴Sb
52	¹²⁶Te	¹³⁴Te
53	¹²⁷I	¹³⁴I
54	¹²⁸Xe	¹³⁴Xe
55	¹²⁹Cs	¹³⁴Cs
56	¹³⁰Ba	¹³⁴Ba
57	¹³¹La	¹³⁴La
58	¹³²Ce	¹³⁴Ce
59	¹³³Pr	¹³⁴Pr
60	¹³⁴Nd	¹³⁴Nd
61	¹³⁵Pm	¹³⁴Pm
62	¹³⁶Sm	¹³⁴Sm
63	¹³⁷Eu	¹³⁴Eu
64	¹³⁸Gd	¹³⁴Gd
65	¹³⁹Tb
66	¹⁴⁰Dy
67	¹⁴¹Ho