Atomistry » Neptunium » Isotopes
Atomistry »
  Neptunium »
    Isotopes »

Neptunium Isotopes

Proton number: 93

Stable Isotopes

There is no Neptunium Stable isotopes known

Natural Radioactive isotopes

There is no Neptunium Natural Radioactive isotopes known

Artificial Radioactive isotopes


Neptunium radioactive isotope number 1: 225Np
Neutrons: 132;
Jn: 9/2-;
Decay: α : 100.00 %;
t1/2: 2E-06s ≈ 2.00 µs;

Neptunium radioactive isotope number 2: 226Np
Neutrons: 133;
Jn: Unknown;
Decay: α : 100.00 %;
t1/2: 0.035s ≈ 35.00 ms;

Neptunium radioactive isotope number 3: 227Np
Neutrons: 134;
Jn: Unknown;
Decay: α : 100.00 %;
t1/2: 0.51s ;

Neptunium radioactive isotope number 4: 228Np
Neutrons: 135;
Jn: Unknown;
Decay: ε : 60.00 %
α : 40.00 %;
t1/2: 61.4s ;

Neptunium radioactive isotope number 5: 229Np
Neutrons: 136;
Jn: Unknown;
Decay: α : 68.00 %
ε : 32.00 %;
t1/2: 240s ≈ 4.00 m;

Neptunium radioactive isotope number 6: 230Np
Neutrons: 137;
Jn: Unknown;
Decay: ε ≤ 97.00 %
α ≥ 3.00 %;
t1/2: 276s ≈ 4.60 m;

Neptunium radioactive isotope number 7: 231Np
Neutrons: 138;
Jn: 5/2;
Decay: ε : 98.00 %
α : 2.00 %;
t1/2: 2928s ≈ 48.80 m;

Neptunium radioactive isotope number 8: 232Np
Neutrons: 139;
Jn: 4+;
Decay: ε : 100.00 %
α : 2.0E-4 %;
t1/2: 882s ≈ 14.70 m;

Neptunium radioactive isotope number 9: 233Np
Neutrons: 140;
Jn: 5/2+;
Decay: ε : 100.00 %
α ≤ 1.0E-3 %;
t1/2: 2172s ≈ 36.20 m;

Neptunium radioactive isotope number 10: 234Np
Neutrons: 141;
Jn: 0+;
Decay: ε : 100.00 %;
t1/2: 380160s ≈ 4.40 d;

Neptunium radioactive isotope number 11: 235Np
Neutrons: 142;
Jn: 5/2+;
Decay: ε : 100.00 %
α : 2.6E-3 %;
t1/2: 34223040s ≈ 1.09 y;

Neptunium radioactive isotope number 12: 236Np
Neutrons: 143;
Jn: 6-;
Decay: ε : 86.30 %
β - : 13.50 %
α : 0.16 %;
t1/2: 4.825008E+12s ≈ 1.530000e+5 y;

Neptunium radioactive isotope number 13: 236Np
Neutrons: 143;
Jn: 1;
Decay: β - : 50.00 %
ε : 50.00 %;
t1/2: 81000s ≈ 22.50 h;

Neptunium radioactive isotope number 14: 237Np
Neutrons: 144;
Jn: 5/2+;
Decay: α : 100.00 %
SF ≤ 2E-10 %;
t1/2: 6.761318E+13s ≈ 2.144000e+6 y;

Neptunium radioactive isotope number 15: 238Np
Neutrons: 145;
Jn: 2+;
Decay: β - : 100.00 %;
t1/2: 182908.8s ≈ 2.12 d;

Neptunium radioactive isotope number 16: 239Np
Neutrons: 146;
Jn: 5/2+;
Decay: β - : 100.00 %;
t1/2: 203558.4s ≈ 2.36 d;

Neptunium radioactive isotope number 17: 240Np
Neutrons: 147;
Jn: 5+;
Decay: β - : 100.00 %;
t1/2: 3714s ≈ 1.03 h;

Neptunium radioactive isotope number 18: 240Np
Neutrons: 147;
Jn: 1+;
Decay: β - : 99.88 %
IT : 0.12 %;
t1/2: 433.2s ≈ 7.22 m;

Neptunium radioactive isotope number 19: 241Np
Neutrons: 148;
Jn: 5/2+;
Decay: β - : 100.00 %;
t1/2: 834s ≈ 13.90 m;

Neptunium radioactive isotope number 20: 242Np
Neutrons: 149;
Jn: 1+;
Decay: β - : 100.00 %;
t1/2: 132s ≈ 2.20 m;

Neptunium radioactive isotope number 21: 242Np
Neutrons: 149;
Jn: 6+;
Decay: β - : 100.00 %;
t1/2: 330s ≈ 5.50 m;

Neptunium radioactive isotope number 22: 243Np
Neutrons: 150;
Jn: 5/2-;
Decay: β - : 100.00 %;
t1/2: 111s ;

Neptunium radioactive isotope number 23: 244Np
Neutrons: 151;
Jn: 7-;
Decay: β - : 100.00 %;
t1/2: 137.4s ≈ 2.29 m;

Last articles

Zn in 8WB0
Zn in 8WAX
Zn in 8WAU
Zn in 8WAZ
Zn in 8WAY
Zn in 8WAV
Zn in 8WAW
Zn in 8WAT
Zn in 8W7M
Zn in 8WD3
© Copyright 2008-2020 by atomistry.com
Home   |    Site Map   |    Copyright   |    Contact us   |    Privacy