Isotop neptunium
Daftar isotop

| Nuklida | Z> Energi eksitasi | N> Energi eksitasi | Massa isotop (Da) > Energi eksitasi | Waktu paruh | Modepeluruhan | Isotopanak | Spin dan paritas | Kelimpahanisotop |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 219Np | 93 | 126 | 219,03162(9) | 0,15(+0,72-0,07) mdtk | α | 215Pa | (9/2−) |  |  |  |  |  |  |  |  |  |  |  |  |
| 220Np | 93 | 127 | 220,03254(21)# | 25(+14-7) μdtk | α | 216Pa | 1-# |  |  |  |  |  |  |  |  |  |  |  |  |
| 222Np | 93 | 129 |  | 380(+260-110) ndtk | α | 218Pa | 1-# |  |  |  |  |  |  |  |  |  |  |  |  |
| 223Np | 93 | 130 | 223,03285(21)# | 2,15(+100-52) μdtk | α | 219Pa | 9/2− |  |  |  |  |  |  |  |  |  |  |  |  |
| 224Np | 93 | 131 | 224,03422(21)# | 38(+26-11) μdtk | α (83%) | 220m1Pa | 1-# |  |  |  |  |  |  |  |  |  |  |  |  |
| 224Np | 93 | 131 | 224,03422(21)# | 38(+26-11) μdtk | α (17%) | 220m2Pa | 1-# |  |  |  |  |  |  |  |  |  |  |  |  |
| 225Np | 93 | 132 | 225,03391(8) | 6(5) mdtk | α | 221Pa | 9/2−# |  |  |  |  |  |  |  |  |  |  |  |  |
| 226Np | 93 | 133 | 226,03515(10)# | 35(10) mdtk | α | 222Pa |  |  |  |  |  |  |  |  |  |  |  |  |  |
| 227Np | 93 | 134 | 227,03496(8) | 510(60) mdtk | α (99,95%) | 223Pa | 5/2−# |  |  |  |  |  |  |  |  |  |  |  |  |
| 227Np | 93 | 134 | 227,03496(8) | 510(60) mdtk | β+ (0,05%) | 227U | 5/2−# |  |  |  |  |  |  |  |  |  |  |  |  |
| 228Np | 93 | 135 | 228,03618(21)# | 61,4(14) dtk | β+ (59%) | 228U |  |  |  |  |  |  |  |  |  |  |  |  |  |
| 228Np | 93 | 135 | 228,03618(21)# | 61,4(14) dtk | α (41%) | 224Pa |  |  |  |  |  |  |  |  |  |  |  |  |  |
| 228Np | 93 | 135 | 228,03618(21)# | 61,4(14) dtk | β+, SF (0,012%) | (beberapa) |  |  |  |  |  |  |  |  |  |  |  |  |  |
| 229Np | 93 | 136 | 229,03626(9) | 4,0(2) mnt | α (51%) | 225Pa | 5/2+# |  |  |  |  |  |  |  |  |  |  |  |  |
| 229Np | 93 | 136 | 229,03626(9) | 4,0(2) mnt | β+ (49%) | 229U | 5/2+# |  |  |  |  |  |  |  |  |  |  |  |  |
| 230Np | 93 | 137 | 230,03783(6) | 4,6(3) mnt | β+ (97%) | 230U |  |  |  |  |  |  |  |  |  |  |  |  |  |
| 230Np | 93 | 137 | 230,03783(6) | 4,6(3) mnt | α (3%) | 226Pa |  |  |  |  |  |  |  |  |  |  |  |  |  |
| 231Np | 93 | 138 | 231,03825(5) | 48,8(2) mnt | β+ (98%) | 231U | (5/2)(+#) |  |  |  |  |  |  |  |  |  |  |  |  |
| 231Np | 93 | 138 | 231,03825(5) | 48,8(2) mnt | α (2%) | 227Pa | (5/2)(+#) |  |  |  |  |  |  |  |  |  |  |  |  |
| 232Np | 93 | 139 | 232,04011(11)# | 14,7(3) mnt | β+ (99,99%) | 232U | (4+) |  |  |  |  |  |  |  |  |  |  |  |  |
| 232Np | 93 | 139 | 232,04011(11)# | 14,7(3) mnt | α (0,003%) | 228Pa | (4+) |  |  |  |  |  |  |  |  |  |  |  |  |
| 233Np | 93 | 140 | 233,04074(5) | 36,2(1) mnt | β+ (99,99%) | 233U | (5/2+) |  |  |  |  |  |  |  |  |  |  |  |  |
| 233Np | 93 | 140 | 233,04074(5) | 36,2(1) mnt | α (0,001%) | 229Pa | (5/2+) |  |  |  |  |  |  |  |  |  |  |  |  |
| 234Np | 93 | 141 | 234,042895(9) | 4,4(1) hri | β+ | 234U | (0+) |  |  |  |  |  |  |  |  |  |  |  |  |
| 235Np | 93 | 142 | 235,0440633(21) | 396,1(12) hri | EC | 235U | 5/2+ |  |  |  |  |  |  |  |  |  |  |  |  |
| 235Np | 93 | 142 | 235,0440633(21) | 396,1(12) hri | α (0,0026%) | 231Pa | 5/2+ |  |  |  |  |  |  |  |  |  |  |  |  |
| 236Np | 93 | 143 | 236,04657(5) | 1,54(6)×105 thn | EC (87,3%) | 236U | (6−) |  |  |  |  |  |  |  |  |  |  |  |  |
| 236Np | 93 | 143 | 236,04657(5) | 1,54(6)×105 thn | β− (12,5%) | 236Pu | (6−) |  |  |  |  |  |  |  |  |  |  |  |  |
| 236Np | 93 | 143 | 236,04657(5) | 1,54(6)×105 thn | α (0,16%) | 232Pa | (6−) |  |  |  |  |  |  |  |  |  |  |  |  |
| 236mNp | 60(50) keV | 60(50) keV | 60(50) keV | 22,5(4) jam | EC (52%) | 236U | 1 |  |  |  |  |  |  |  |  |  |  |  |  |
| 236mNp | 60(50) keV | 60(50) keV | 60(50) keV | 22,5(4) jam | β− (48%) | 236Pu | 1 |  |  |  |  |  |  |  |  |  |  |  |  |
| 237Np | 93 | 144 | 237,0481734(20) | 2,144(7)×106 thn | α | 233Pa | 5/2+ | Renik |  |  |  |  |  |  |  |  |  |  |  |
| 237Np | 93 | 144 | 237,0481734(20) | 2,144(7)×106 thn | SF (2×10−10%) | (beberapa) | 5/2+ | Renik |  |  |  |  |  |  |  |  |  |  |  |
| 237Np | 93 | 144 | 237,0481734(20) | 2,144(7)×106 thn | CD (4×10−12%) | 207Tl 30Mg | 5/2+ | Renik |  |  |  |  |  |  |  |  |  |  |  |
| 238Np | 93 | 145 | 238,0509464(20) | 2,117(2) hri | β− | 238Pu | 2+ |  |  |  |  |  |  |  |  |  |  |  |  |
| 238mNp | 2300(200)# keV | 2300(200)# keV | 2300(200)# keV | 112(39) ndtk |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| 239Np | 93 | 146 | 239,0529390(22) | 2,356(3) hri | β− | 239Pu | 5/2+ | Renik |  |  |  |  |  |  |  |  |  |  |  |
| 240Np | 93 | 147 | 240,056162(16) | 61,9(2) mnt | β− | 240Pu | (5+) | Renik |  |  |  |  |  |  |  |  |  |  |  |
| 240mNp | 20(15) keV | 20(15) keV | 20(15) keV | 7,22(2) mnt | β− (99,89%) | 240Pu | 1(+) |  |  |  |  |  |  |  |  |  |  |  |  |
| 240mNp | 20(15) keV | 20(15) keV | 20(15) keV | 7,22(2) mnt | IT (0,11%) | 240Np | 1(+) |  |  |  |  |  |  |  |  |  |  |  |  |
| 241Np | 93 | 148 | 241,05825(8) | 13,9(2) mnt | β− | 241Pu | (5/2+) |  |  |  |  |  |  |  |  |  |  |  |  |
| 242Np | 93 | 149 | 242,06164(21) | 2,2(2) mnt | β− | 242Pu | (1+) |  |  |  |  |  |  |  |  |  |  |  |  |
| 242mNp | 0(50)# keV | 0(50)# keV | 0(50)# keV | 5,5(1) mnt |  |  | 6+# |  |  |  |  |  |  |  |  |  |  |  |  |
| 243Np | 93 | 150 | 243,06428(3)# | 1,85(15) mnt | β− | 243Pu | (5/2−) |  |  |  |  |  |  |  |  |  |  |  |  |
| 244Np | 93 | 151 | 244,06785(32)# | 2,29(16) mnt | β− | 244Pu | (7−) |  |  |  |  |  |  |  |  |  |  |  |  |
Header & footer tabel ini:  view 
↑  mNp –  Isomer nuklir tereksitasi.
↑  ( ) –  Ketidakpastian (1σ) diberikan dalam bentuk ringkas dalam tanda kurung setelah digit terakhir yang sesuai.
↑  # –  Massa atom bertanda #: nilai dan ketidakpastian yang diperoleh bukan dari data eksperimen murni, tetapi setidaknya sebagian dari tren dari Permukaan Massa (trends from the Mass Surface, TMS).
↑  
Mode peluruhan:


CD:Peluruhan gugus

EC:Penangkapan elektron

IT:Transisi isomerik

SF:Fisi spontan
↑  Simbol miring tebal sebagai anak –  Produk anak hampir stabil.
↑  ( ) nilai spin –  Menunjukkan spin dengan argumen penempatan yang lemah.
1 2  # –  Nilai yang ditandai # tidak murni berasal dari data eksperimen, tetapi setidaknya sebagian dari tren nuklida tetangga (trends of neighboring nuclides, TNN).
1 2  Nuklida fisil
↑  Nuklida yang paling umum
1 2  Diproduksi melalui penangkapan neutron dalam bijih uranium
↑  Produk peluruhan antara dari 244Pu