Barium-152

Properties and data of the isotope ¹⁵²Ba.

Content

General data

Name of the isotope:Barium-152; Ba-152Symbol:¹⁵²Ba or 15256BaMass number A:152 (= number of nucleons)Atomic number Z:56 (= number of protons)Neutrons N:96Isotopic mass:151.95522(43) u (atomic weight of Barium-152)Nuclide mass:151.9245016 u (calculated nuclear mass without electrons)Mass excess:-41.7123 MeVMass defect:1.314813728 u (per nucleus)Nuclear binding energy:1224.74109875 MeV (per nucleus)
8.05750723 MeV (average binding energy per nucleon)Separation energy:S_N = 4.84(56) MeV (first neutron)
S_P = 14.77(64) MeV (first proton)Half-life:139(8) msDecay constant λ:4.9866703637406 s^-1Specific activity α:1.988770288246 × 10⁺²² Bq g^-1
537505483309.78 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:2010

Radioactive Decay

Half-life T_½ = 139(8) ms respectively 1.39 × 10^-1 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	¹⁵²La	< 100 %	7.58(50) MeV
β^-, n	¹⁵¹La		3.53(59) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 96) and isobaric (same nucleon number A = 152) with Barium-152. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 96	Isobar A = 152
55	¹⁵¹Cs
56	¹⁵²Ba	¹⁵²Ba
57	¹⁵³La	¹⁵²La
58	¹⁵⁴Ce	¹⁵²Ce
59	¹⁵⁵Pr	¹⁵²Pr
60	¹⁵⁶Nd	¹⁵²Nd
61	¹⁵⁷Pm	¹⁵²Pm
62	¹⁵⁸Sm	¹⁵²Sm
63	¹⁵⁹Eu	¹⁵²Eu
64	¹⁶⁰Gd	¹⁵²Gd
65	¹⁶¹Tb	¹⁵²Tb
66	¹⁶²Dy	¹⁵²Dy
67	¹⁶³Ho	¹⁵²Ho
68	¹⁶⁴Er	¹⁵²Er
69	¹⁶⁵Tm	¹⁵²Tm
70	¹⁶⁶Yb	¹⁵²Yb
71	¹⁶⁷Lu	¹⁵²Lu
72	¹⁶⁸Hf
73	¹⁶⁹Ta
74	¹⁷⁰W
75	¹⁷¹Re
76	¹⁷²Os
77	¹⁷³Ir
78	¹⁷⁴Pt
79	¹⁷⁵Au
80	¹⁷⁶Hg
81	¹⁷⁷Tl
82	¹⁷⁸Pb