element

Information about Radium-213:


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

Mass-Energy Data:

Atomic Mass:	213.000346	±	0.000032	amu
Excess Mass (Δ):	0.322155	±	0.029584	MeV
Binding Energy:	1650.022504	±	0.029585	MeV
β^- Decay Energy:	-5.801196	±	0.065886	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: 2.74 min ( 164.4 sec., λ = 0.00421622 s^-1)
Mode of decay:
α
to
209
86
Rn
(Q = 6.859 MeV) Branch ratio: 80.00 %
Mode of decay: E.C. to
213
87
Fr
(Q = 3.880 MeV) Branch ratio: 20.00 %
Meta state at 1.770 Mev 2.74
Half life: 2.1 ms ( 0.0021 sec., λ = 330.07 s^-1)
Mode of decay: γ (IT) (Q = 1.770 MeV) Branch ratio: ~99.00 %
Mode of decay:
α
to
209
86
Rn
(Q = 8.629 MeV) Branch ratio: ~1.00 %
Possible parent nuclides:
α from
217
90
Th

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	2.7 m	1/2-	+0.613(2)		[137Ba]	CFBLS	PRL 59 771 (87)/NP A483 244 (88)
1770	2.1 ms	(17/2-)	7.4(4)		[214Ra 1864]	LEMS	PR C49 645 (94)
				Q/Q214Ra8+	[214Ra 1864]	LEMS	NP A555 629 (93)
				= 1.21(8)

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