Information about Dysprosium-157:


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

Mass-Energy Data:

Atomic Mass:	156.925461	±	0.000007	amu
Excess Mass (Δ):	-69.432382	±	0.006800	MeV
Binding Energy:	1284.994738	±	0.006804	MeV
β^- Decay Energy:	-2.540000	±	0.050000	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: 8.14 h ( 29304 sec., λ = 2.36537×10^-05 s^-1)
Mode of decay:
E.C.
to
157
65
Tb
(Q = 1.341 MeV)
Meta state at 0.199 Mev
Spin: 11/2- 8.14
Half life: 21.6 ms ( 0.0216 sec., λ = 32.0901 s^-1)
Mode of decay: γ (IT) (Q = 0.199 MeV)
Possible parent nuclides:
E.C. from
157
67
Ho

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	8.1 h	3/2-	-0.301(2)		[163Dy]	CFBLS	PC Neugart (87)
			-0.302(2)		[163Dy]	AB	PS 6 24 (72)/PL 49A 287 (74)
				+1.30(2)	[163Dy]	CFBLS	PC Neugart (87)
				+1.30(1)	[163Dy]	AB	PS 6 24 (72)/PL 49A 287 (74)

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