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Rhenium-162m

Properties and data of the isotope 162Re.


Content

See also: list of Rhenium isotopes.

 

General data

Name of the isotope:Rhenium-162m; Re-162mSymbol:162Re or 16275ReMass number A:162 (= number of nucleons)Atomic number Z:75 (= number of protons)Neutrons N:87Isotopic mass:161.97584(21) u (atomic weight of Rhenium-162m)
Excitation energy: 173(13) keV
Nuclide mass:161.9347007 u (calculated nuclear mass without electrons)Mass excess:-22.5049 MeVMass defect:1.364885092 u (per nucleus)Nuclear binding energy:1271.38227389 MeV (per nucleus)
7.84803873 MeV (average binding energy per nucleon)
Half-life:77(9) msDecay constant λ:9.0019114358434 s-1Specific activity α:3.367129110268 × 10+22 Bq g-1
910034894667.19 Ci g-1
Spin and parity:
(nuclear angular momentum)
(9+)

 

Radioactive Decay

Half-life T½ = 77(9) ms respectively 7.7 × 10-2 seconds s.

Decay modeDaughterProbabilityDecay energyγ energy
(intensity)
α158Ta91(5) %6.240 MeV
EE/β+162W9(5) %11.649 MeV

 

Nuclear Isomers

Nuclear isomers or excited states with the activation energy in keV related to the ground state.

Nuclear IsomerExcitation EnergyHalf-lifeSpin
162Re107(13) ms(2-)

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 87) and isobaric (same nucleon number A = 162) with Rhenium-162m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

OZIsotone N = 87Isobar A = 162
49136In
50137Sn
51138Sb
52139Te
53140I
54141Xe
55142Cs
56143Ba
57144La
58145Ce
59146Pr
60147Nd162Nd
61148Pm162Pm
62149Sm162Sm
63150Eu162Eu
64151Gd162Gd
65152Tb162Tb
66153Dy162Dy
67154Ho162Ho
68155Er162Er
69156Tm162Tm
70157Yb162Yb
71158Lu162Lu
72159Hf162Hf
73160Ta162Ta
74161W162W
75162Re162Re
76163Os162Os
77164Ir

 


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Last update: 2020-10-21


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