Strontium-97m1

Properties and data of the isotope ⁹⁷Sr.

Content

General data

Name of the isotope:Strontium-97m1; Sr-97m1Symbol:⁹⁷Sr or 9738SrMass number A:97 (= number of nucleons)Atomic number Z:38 (= number of protons)Neutrons N:59Isotopic mass:96.926375(4) u (atomic weight of Strontium-97m1)
Excitation energy: 308.13(11) keVNuclide mass:96.9055298 u (calculated nuclear mass without electrons)Mass excess:-68.58125 MeVMass defect:0.88220626 u (per nucleus)Nuclear binding energy:821.76983795 MeV (per nucleus)
8.471854 MeV (average binding energy per nucleon)Half-life:169(9) nsDecay constant λ:4101462.6068636 s^-1Specific activity α:2.572873494822 × 10⁺²⁸ Bq g^-1
6.953712148168 × 10⁺¹⁷ Ci g^-1Spin and parity:
(nuclear angular momentum)7/2+

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
⁹⁷Sr		429(5) ms	1/2+
^97m2Sr	830.83(23) keV	395 ns	(9/2+)

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 59) and isobaric (same nucleon number A = 97) with Strontium-97m1. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

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