element

Information about Nitrogen-21:

		(no NIST x-ray data)	(no NIST attenuation data)
Wikipedia	Neutron Cross Sections	X-Ray Transitions	X-Ray Attenuation

Mass-Energy Data:

Atomic Mass:	21.027088	±	0.000096	amu
Excess Mass (Δ):	25.231909	±	0.089365	MeV
Binding Energy:	138.789396	±	0.089365	MeV
β^- Decay Energy:	17.170173	±	0.090171	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: (1/2-)
Half life: 87 ms ( 0.087 sec., λ = 7.96721 s^-1)
Mode of decay: β^- to
21
8
O
(Q = 17.170 MeV)
Mode of decay: β^- +
1
0
n to
20
8
O
(Q = 13.360 MeV) Branch ratio: 80.00 %

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)