The activity in accelerator development for accelerator-based BNCT (AB-BNCT) both worldwide and in Argentina is described. Projects in Russia, UK, Italy, Japan, Israel, and Argentina to develop AB-BNCT around different types of accelerators are briefly presented. In particular, the present status and recent progress of the Argentine project will be reviewed. The topics will cover: intense ion sources, accelerator tubes, transport of intense beams, beam diagnostics, the (9)Be(d,n) reaction as a possible neutron source, Beam Shaping Assemblies (BSA), a treatment room, and treatment planning in realistic cases.

High spin states in ${}_{}{}^{75}{}_{}{}^{}\mathrm{Br}$ were investigated in the reactions ${}_{}{}^{62}{}_{}{}^{}\mathrm{Ni}$ ${(}^{16}$O,p2n) and ${}_{}{}^{66}{}_{}{}^{}\mathrm{Zn}$ ${(}^{12}$C,p2n). By means of γγ- and γ-neutron multiplicity coincidence measurements, rotational bands of both parities were extended up to 7 MeV excitation energy and spin I=(33/2). The lifetimes of 17 yrast states were determined with the recoil distance and Doppler shift attenuation methods; the spin dependence of the side feeding time was also measured. The data have been analyzed in terms of the Strutinsky-Bogolyubov cranking model with a Woods-Saxon average potential. The first crossing observed in the negative parity bands is attributed to the alignment of a $g_{9/2}$ proton pair; the next irregularity which is also observed in the positive parity band is interpreted as the alignment of $g_{9/2}$ neutrons. The coexistence of prolate and oblate configurations at low spin and the change of nonaxial deformation with rotational frequency due to the polarization of the even-even core by the odd particle are discussed. The signature inversion visible in the negative parity bands as well as the changes in the signature splitting and reduction of B(E2) values at high spins may be related to a transition from γ<0° to γ>0° triaxial shapes.

High-spin states in doubly odd ${}^{176}\mathrm{Re}$ were investigated by means of in-beam $\gamma$-ray spectroscopy techniques using the multidetector array GASP. Excited states of ${}^{176}\mathrm{Re}$ were populated using the ${}^{165}\mathrm{Ho}{(}^{16}\mathrm{O},5n)$ reaction at a beam energy of 101 MeV. Seven rotational bands have been observed and their configurations have been discussed. Alignments, band crossing frequencies, and electromagnetic properties have been analyzed in the framework of the cranking model. Signature inversion phenomena in the $\pi h_{11/2}\otimes \nu i_{13/2}$ and $\pi h_{9/2}\otimes \nu i_{13/2}$ structures are discussed. In the latter case signature inversion is traced to a large repulsive matrix element of the $p-n$ force acting in the maximally aligned $J=11\mathrm{}$ state.

High-spin states in ${}_{}{}^{189}{}_{}{}^{}\mathrm{Tl}$ have been populated through the ${}_{}{}^{165}{}_{}{}^{}\mathrm{Ho}$ ${(}^{28}$Si,4n) reaction and studied with in-beam γ-ray spectroscopy techniques. Both oblate and prolate structures associated with the i13/2 proton orbit are confirmed and extended to higher spins (19/2 and 41/2, respectively). However, only the oblate structure related to the πh9/2 has been observed meaning that the associated prolate structure is nonyrast contrary to expectation. This experimental result points clearly to a large amplitude of (πh9/2${)}^2$ in the wave function of the prolate minimum of ${}_{}{}^{188}{}_{}{}^{}\mathrm{Hg}$.