11-Na-21 basic

11-sodium-21

Atomic Mass: 20.9976551 +- 0.0000008 amu
Excess Mass: -2184.261 +- 0.700 keV
Binding Energy: 163076.152 +- 0.700 keV
Beta Decay Energy: B- -13095.942 +- 16.431 keV

"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.

Spin: 3/2+
Half life: 22.49 s
Mode of decay: Electron capture to Ne-21
- Decay energy: 3.547 MeV
Possible parent nuclides:
Electron capture from Mg-21
EC + P from Al-22

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)	T_1/2	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)

N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published. 2000 Courtesy of T. Burrows at BNL/NNDC.