Neutron induced nuclear reaction / Neutron energy and flux density / Cross section / Excitation function / Radiochemical separation / Low-level β counting / γ-ray spectrometry
SummaryExcitation functions were measured for 70 Ge(n,p) 70 Ga, 73 Ge(n,p) 73 Ga, 74 Ge(n,p) 74E Ga, 71 Ga(n,p) 7,m Zn, 7 'Ga(n,2n) 70 Ga, 67 Zn(n,p) 67 Cu and 68 Zn(n,a) 65 Ni reactions in the neutron energy range of 6.2 to 12.4 MeV. Quasimonoenergetic neutrons in this energy range were produced via the D-D reaction on a D 2 gas target at the Jülich compact cyclotron (CV 28). Use was made of the activation technique in combination with high resolution HPGe-detector y-ray spectrometry. In a few cases, radiochemical separations and low-level β counting were applied. For most of the reactions, our measurements provide the first consistent sets of data near their thresholds. Nuclear model calculations using the code STAPRE, which employs the Hauser-Feshbach (statistical model) and exciton-model (precompound effects) formalisms, were undertaken to describe the excitation functions of all the investigated reactions. In most cases, the calculated values agree fairly well with the experimental results.
SUMMARYThe new ligands 1,6-dimethoxy-3,4-hexanedione dioxime (DMHD and 1,6-diethoxy-3,4-hexanedione dioxime (DEHD) were synthesized and their boron containing 99TcP"Tc complexes, formed by reduction of ertechnetate with BH; , were isolated, purified and characterized by fR/UV/VIS spectroscopy and FAB mass spectrometry. These rather stable cationic complexes differ significantly in li o hilicity as assessed b their oc~nol/saline partition coefficients and &k capacity factors.dnexpectedly the organ uptake and clearance of both com lexes in mice proved to be very similar with only the uptake of 99mTc-8MHD in the kidneys being enhanced.Key words: technetium, cationic dioxime complexes, lipophilicity, biodistribution.
I"IR0DUC"ION
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.