element
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Information about Sodium-21:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Mass-Energy Data:
| Atomic Mass: | 20.997655 | ± | 0.000001 | amu |
| Excess Mass (Δ): | -2.184261 | ± | 0.000700 | MeV |
| Binding Energy: | 163.076152 | ± | 0.000700 | MeV |
| β- Decay Energy: | -13.095942 | ± | 0.016431 | MeV |
"The 1995 update to the atomic mass evaluation" by G.Audi and A.H.Wapstra,
Nuclear Physics A595 vol. 4 p.409-480, December 25, 1995.
Radioactive Decay Data:
- Spin: 3/2+
- Half life: 22.49 s ( 22.49 sec., λ = 0.0308202 s-1)
- Mode of decay:
E.C. to
(Q = 3.547 MeV)
- Possible parent nuclides:
- E.C. from
- E.C. + p+ from
R.R.Kinsey, et al.,The NUDAT/PCNUDAT Program for Nuclear Data,paper submitted to the 9 th International Symposium of Capture-Gamma_raySpectroscopy and Related Topics, Budapest, Hungary, Octover 1996.Data extracted from NUDAT database (Jan. 14/1999)
Magnetic Dipole Moments and Electric Quadrupole Moments
| Ex(kev) | T1/2 | Spin | | m(nm) | | Q(b) | | Ref. Std. | Method | Reference |
| 0 | 22.5 s | 3/2+ | | +2.83630(10) | | | | [23Na] | AB | PR 137 B1157 (65) |
| | | | | | +0.05(4) | | | ABLS | PR C25 2756 (82) |
| 332 | 6.9 ps | 5/2+ | | 3.7(3) | | | | | RIV/D | PR C16 679 (77) |
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N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published. 2000 Courtesy of T. Burrows at BNL/NNDC.
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