Compendium of thermal-neutron-capture γ-ray measurements part II Z = 47 to Z = 67 (Ag to Ho)

The decay of123g+mIn to the excited states of123Sn

“…The logft values of the beta transitions to the levels at 920.5 and 1194 keV indicate unique first forbidden transitions, which include for these levels J~= 5/2 +, in agreement with the J~ value of two levels at these energies, reported in Ref. [6,7]. Cavanagh et al [6] found two levels at 2.62 and 3.24 MeV with J= 1/2 + and 3/2 + respectively.…”

“…The gamma-rays observed in the decay of ~23In and ~23"In are summarized in Table 1. In the decay of the 9/2 + ground state (lg9/2) only a 1 130.0 keV gamma transition could be observed, indicating a beta transition to the 7/2 + level (lg7/2) at 1 154 keV [6,7] followed by a gamma transition to the 3/2 + state (2d3/2) at 24 keV in 123Sn. It shows a decay period of about 6 sec in agreement with the value of 5.97 see measured by Grappengigsser et al [2] and in agreement with the results of Yuta and Morinaga [1].…”

Decay characteristics of 0 2 + and 0 3 + states in112Cd and114Cd

“…The results, expressed as K conversion-electron intensities, are: 1) is in disagreement with the value of 1.7 reported in [t6] but is closer to the value of 0.6 of [17]. In the a l~Cd case, neutron capture 7-ray and conversion-electron data of [18,5] are used in deriving the branching ratios for the decays of the 0~ and 0~ states. A high-efficiency coincidence method [19] was employed in the double Coulomb excitation measurements, in which thick (~15mg/cm 2) metallic Cd targets were bombarded with a 44 MeV 160 beam from the Uppsala EN Tandem.…”

Induction of Double-strand Breaks Following Neutron Capture by DNA-bound157Gd

“…Activation by neutrons releases high LET 2-particles and 7 Li atoms, which have ranges of the order of one cell diameter, so the radiation damage is confined to the tumour . The conventional rationale for BNCT (Hatanaka 1986) considers other isotopes with high thermal neutron cross-sections ; for example, 113 Cd (15,787 barns), 149 Sm (41,000) and 157 Gd (242,000) (Groshev et al . 1968), which are all n,y reactions with stable product-isotopes .…”