Krypton-93

Properties and data of the isotope ⁹³Kr.

Contents

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

See also: List of individual Krypton isotopes (and general data sources).

General data

Name of the isotope:Krypton-93; Kr-93Symbol:⁹³Kr or 9336KrMass number A:93 (= number of nucleons)Atomic number Z:36 (= number of protons)Neutrons N:57Nucleon pairing (Z - N):even - oddNuclear ratio (N/Z ratio):1.5833333333333 (= neutron-proton ratio)Neutron excess (N-Z):21Isotopic mass:92.9311472(27) u (atomic weight of Krypton-93)Nuclide mass:92.9113991 u (calculated nuclear mass without electrons)Mass excess:-64.13597 MeVMass defect:0.84445416400001 u (per nucleus)Nuclear binding energy:786.60398704 MeV (per nucleus)
8.45810739 MeV (average binding energy per nucleon)Separation energy:S_N = 3.438(4) MeV (first neutron)
S_P = 15.192(7) MeV (first proton)Half-life:1.286(10) sDecay constant λ:0.53899469716948 s^-1Specific activity α:3.52815433599 × 10⁺²¹ Bq g^-1
95355522594.405 Ci g^-1Spin and parity:
(nuclear angular momentum)1/2+Magnetic dipole moment:μ(μ_N) = - 0.413(2)Nuclear g-factor:g_l = -0.826Charge radius:4.2794(107) femtometer fmYear of discovery:1951

Radioactive Decay

Half-life T_½ = 1.286(10) s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁹³Rb	98.05 %	8.484(8) MeV
β^-, n	⁹²Rb	1.95(11) %	2.565(7) MeV

Parent Nuclides

Direct parent isotopes are: ⁹³Br, ⁹⁴Br.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 57) and isobaric (same nucleon number A = 93) with Krypton-93. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 57	Isobar A = 93
32	⁸⁹Ge
33	⁹⁰As
34	⁹¹Se	⁹³Se
35	⁹²Br	⁹³Br
36	⁹³Kr	⁹³Kr
37	⁹⁴Rb	⁹³Rb
38	⁹⁵Sr	⁹³Sr
39	⁹⁶Y	⁹³Y
40	⁹⁷Zr	⁹³Zr
41	⁹⁸Nb	⁹³Nb
42	⁹⁹Mo	⁹³Mo
43	¹⁰⁰Tc	⁹³Tc
44	¹⁰¹Ru	⁹³Ru
45	¹⁰²Rh	⁹³Rh
46	¹⁰³Pd	⁹³Pd
47	¹⁰⁴Ag	⁹³Ag
48	¹⁰⁵Cd
49	¹⁰⁶In
50	¹⁰⁷Sn
51	¹⁰⁸Sb
52	¹⁰⁹Te
53	¹¹⁰I
54	¹¹¹Xe
55	¹¹²Cs