element

Information about Selenium-69:


Wikipedia	Neutron Cross Sections	X-Ray Transitions	X-Ray Attenuation

Mass-Energy Data:

Atomic Mass:	68.939562	±	0.000037	amu
Excess Mass (Δ):	-56.297481	±	0.034476	MeV
Binding Energy:	586.618739	±	0.034476	MeV
β^- Decay Energy:	-9.889000	±	0.316000	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: 27.4 s ( 27.4 sec., λ = 0.0252973 s^-1)
Mode of decay:
E.C.
to
69
33
As
(Q = 6.780 MeV)
Mode of decay: E.C. +
1
1
p⁺ to
68
32
Ge
(Q = 3.390 MeV) Branch ratio: 0.05 %

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)