Information about Germanium-77:


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Mass-Energy Data:

Atomic Mass:	76.923548	±	0.000002	amu
Excess Mass (Δ):	-71.214138	±	0.001832	MeV
Binding Energy:	667.670685	±	0.001835	MeV
β^- Decay Energy:	2.702040	±	0.002081	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: 7/2+
Half life: 11.30 h ( 40680 sec., λ = 1.7039×10^-05 s^-1)
Mode of decay:
β^-
to
77
33
As
(Q = 2.702 MeV)
Meta state at 0.159 Mev
Spin: 1/2- 11.30
Half life: 52.9 s ( 52.9 sec., λ = 0.013103 s^-1)
Mode of decay:
β^-
to
77
33
As
(Q = 2.862 MeV) Branch ratio: 81.00 %
Mode of decay: γ (IT) (Q = 0.160 MeV) Branch ratio: 19.00 %
Possible parent nuclides:
β^- from
77
31
Ga

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)