18-Argon
Nuclide weight or level energy spin & parity abundance half-life sig(J32) sig(J33) sig(J40)
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Ar-nat 39.948 +- 0.001 XXX
Ar- 31 31.012124 +- 0.000221 5/2+ 15MS 3
Ar- 32 31.997637806 +- 0.000001900 0+ 98MS 2
Ar- 33 32.989925530 +- 0.000000430 1/2+ 173.0MS 20
Ar- 34 33.980271063 +- 0.000000360 0+ 844.5MS 34
Ar- 35 34.975257613 +- 0.000000801 3/2+ 1.775S 4
Ar- 36 35.967545107 +- 0.000000029 0+ 0.3336 stable
Ar- 37 36.966776303 +- 0.000000221 3/2+ 35.04D 4
Ar- 38 37.962732196 +- 0.000000262 0+ 0.0629 stable
Ar- 39 38.964313038 +- 0.000005367 7/2- 269Y 3
Ar- 40 39.96238312370 +- 0.00000000240 0+ 99.6035 stable XXX XXX XXX
Ar- 41 40.964500571 +- 0.000000372 7/2- 109.61M 4
Ar- 42 41.963045737 +- 0.000006200 0+ 32.9Y 11
Ar- 43 42.965636056 +- 0.000005700 (5/2-) 5.37M 6
Ar- 44 43.964923829 +- 0.000001700 0+ 11.87M 5
Ar- 45 44.968039750 +- 0.000000550 5/2-,7/2- 21.48S 15
Ar- 46 45.968084079 +- 0.000043741 0+ 8.4S 6
Ar- 47 46.972936232 +- 0.000096381 (3/2-) 1.23S 3
Ar- 48 47.975690 +- 0.000750 0+ 475MS 40
Ar- 49 48.981980 +- 0.000860 170MS 50
Ar- 50 49.986310 +- 0.000970 0+ 85MS 30
Ar- 51 50.993700 +- 0.001070 unknown
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