Krypton-95m

Properties and data of the isotope ⁹⁵Kr.

Content

General data

Name of the isotope:Krypton-95m; Kr-95mSymbol:⁹⁵Kr or 9536KrMass number A:95 (= number of nucleons)Atomic number Z:36 (= number of protons)Neutrons N:59Isotopic mass:94.939711(20) u (atomic weight of Krypton-95m)
Excitation energy: 195.5(3) keVNuclide mass:94.9199629 u (calculated nuclear mass without electrons)Mass excess:-56.15884 MeVMass defect:0.853220196 u (per nucleus)Nuclear binding energy:794.76949325 MeV (per nucleus)
8.36599467 MeV (average binding energy per nucleon)Half-life:1.4(2) μsDecay constant λ:495105.12897139 s^-1Specific activity α:3.171907262917 × 10⁺²⁷ Bq g^-1
8.572722332210 × 10⁺¹⁶ Ci g^-1Spin and parity:
(nuclear angular momentum)(7/2+)

Radioactive Decay

Half-life T_½ = 1.4(2) μs respectively 1.4 × 10^-6 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
Iso	⁹⁵Kr	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
⁹⁵Kr		114(3) ms	1/2(+)

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 59) and isobaric (same nucleon number A = 95) with Krypton-95m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 59	Isobar A = 95
33	⁹²As
34	⁹³Se	⁹⁵Se
35	⁹⁴Br	⁹⁵Br
36	⁹⁵Kr	⁹⁵Kr
37	⁹⁶Rb	⁹⁵Rb
38	⁹⁷Sr	⁹⁵Sr
39	⁹⁸Y	⁹⁵Y
40	⁹⁹Zr	⁹⁵Zr
41	¹⁰⁰Nb	⁹⁵Nb
42	¹⁰¹Mo	⁹⁵Mo
43	¹⁰²Tc	⁹⁵Tc
44	¹⁰³Ru	⁹⁵Ru
45	¹⁰⁴Rh	⁹⁵Rh
46	¹⁰⁵Pd	⁹⁵Pd
47	¹⁰⁶Ag	⁹⁵Ag
48	¹⁰⁷Cd	⁹⁵Cd
49	¹⁰⁸In
50	¹⁰⁹Sn
51	¹¹⁰Sb
52	¹¹¹Te
53	¹¹²I
54	¹¹³Xe
55	¹¹⁴Cs
56	¹¹⁵Ba
57	¹¹⁶La