Anti-CA14 (full length) polyclonal antibody

This article deals with the new antimonides represented with the general formula Ca14-xRExCdSb11 (RE=La-Nd, Sm, Gd-Yb, x approximate to 0.85 +/- 0.15). The 12 studied compounds constitute a nearly complete series of rare-earth metal substituted variants of the ternary Ca14CdSb11 phase. All have been synthesized from the respective elements, employing high-temperature reactions under molten flux conditions. The structures have been fully characterized by single-crystal X-ray diffraction methods. All materials crystallize in the tetragonal Ca14AlSb11 structure type (space group I4(1)/acd, No. 142, Z=8). Rare-earth element atoms randomly substitute Ca atoms on the four available crystallographic sites, with a noted preference for the Ca2 site in case of the light (La-Nd) rare-earth elements and the Ca1 site in case of the heavier (Sm, Gd-Yb) ones. The electronic structure calculations and resistivity measurements indicate title compounds as degenerated semiconductors. Magnetization measurements at varied temperature show Curie-Weiss paramagnetic behavior consistent with local-moment magnetism due to the 3+ ground state for the rare-earth metal ions. In the case of the Yb-containing sample, a mixed-valence Yb2+/3+ state is apparent. The measured charge transport properties suggest small bandgap degenerate semiconductor-like behavior and suitability for thermoelectrics.

The 1.2 T-14.5 GHz ECR Caprice source is an upgrade version of previous Caprice sources where the three main ingredients of an ECR ion source of multicharged ions have been optimized: (i) the magnetic configuration has higher axial fields (1.4-1.45 T at the mirror throats) and radial field (1.05 T at the wall inside the plasma chamber) as well as higher mirror ratios, (ii) the 14.5 GHz rf frequency is convenient to higher magnetic fields, and (iii) more efficient electron sources allow the electron density to reach higher values, and thus high extracted ion currents (both first stage and wall coating). Emphasis is given to the metallic elements, the source is able to produce 10 e mu A of Ca14+ 3 e mu A of Fe17+ and Ni20+, 1 e mu A of U37+, while being able to deliver 1130 e mu A of O6+, 190 e mu A of O7+, and 100 e mu A of Ar12+. (C) 1996 American Institute of Physics.