Information about Strontium-99:


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Mass-Energy Data:

Atomic Mass:	98.933315	±	0.000150	amu
Excess Mass (Δ):	-62.116633	±	0.139706	MeV
Binding Energy:	831.448162	±	0.139706	MeV
β^- Decay Energy:	8.085648	±	0.138809	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: 0.269 s ( 0.269 sec., λ = 2.57676 s^-1)
Mode of decay:
β^-
to
99
39
Y
(Q = 8.030 MeV)
Mode of decay: β^- +
1
0
n to
98
39
Y
(Q = 2.190 MeV) Branch ratio: 0.10 %
Possible parent nuclides:
β^- from
99
37
Rb

β^- +
1
0
n from
100
37
Rb

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	0.269 s	3/2+	-0.261(5)		"[88,98Sr]"	CFBLS	PL B256 141 (91)
				0.84(8)	"[88,98Sr]"	CFBLS	PL B256 141 (91)

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