F D S Butement 1950 Proc. Phys. Soc. A 63 532 doi:10.1088/0370-1298/63/5/312
F D S Butement
Show affiliationsA new isotope of dysprosium, identified as 166Dy, has been studied. It has been shown that it is formed by thermal neutron capture in the 140 minute isomer of 165Dy, the capture cross section being about 1,200 barns. It decays with a half-life of 82 hours and is the parent of 27 hour 166Ho. It emits beta-particles, the energy of which was found by absorption in aluminium to be 0.22 MeV., and gamma rays of less than 50 keV. energy.
Another new isotope, 159Dy, has been made both by slow neutron irradiation of dysprosium and by deuteron bombardment of terbium. It decays by orbital electron capture, with a half-life greater than 50 days. It will be described in a later paper.
27.70.+q 150(less-than-or-equal-to)A(less-than-or-equal-to)189
23.40.-s Beta decay; double beta decay; electron and muon capture
Issue 5 (1 May 1950)
Received 7 October 1949
F D S Butement 1950 Proc. Phys. Soc. A 63 532
Tao Li et al 2005 Nanotechnology 16 365
Benoît Leboulanger et al 2004 Physiol. Meas. 25 R35
G N Peel 1937 J. Sci. Instrum. 14 103
M D Rogers 1962 J. Sci. Instrum. 39 317
Filipe Tostevin and Martin Howard 2006 Phys. Biol. 3 1
C C Paterson 1932 J. Sci. Instrum. 9 33
A El Badia et al 2005 Inverse Problems 21 1121
T M Rice and M Sigrist 1995 J. Phys.: Condens. Matter 7 L643
F Etayo Gordejuela and R Santamaría 2001 J. Phys. A: Math. Gen. 34 981