Information about Bromine-78:


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Mass-Energy Data:

Atomic Mass:	77.921146	±	0.000004	amu
Excess Mass (Δ):	-73.451896	±	0.003872	MeV
Binding Energy:	675.632706	±	0.003873	MeV
β^- Decay Energy:	0.707804	±	0.007633	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+
Half life: 6.46 min ( 387.6 sec., λ = 0.00178831 s^-1)
Mode of decay:
E.C.
to
78
34
Se
(Q = 3.574 MeV) Branch ratio: >=99.99 %
Mode of decay:
β^-
to
78
36
Kr
(Q = 0.708 MeV) Branch ratio: <=0.01 %
Meta state at 0.180 Mev
Spin: (4+) 6.46
Half life: 119.2 µs ( 0.0001192 sec., λ = 5814.99 s^-1)
Mode of decay: γ (IT) (Q = 0.181 MeV)

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	6.46 m	1+	0.13(3)			NO/S	HFI 75 275 (92)
32	14.2 ns	(2)-	-1.12(4)		[19F 197]	TDPAD	NP A215 471 (73)
181	119 ms	4(+)	+4.114(12)			NMR/AC	Cf74Upp 258 (74)/ZP 244 375 (71)

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