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Excitation functions were measured by stacked-foil activation technique for the 150Nd(p,xpyn) reaction using a 97.65% enriched 150Nd target. Measurement up to ~50% above barrier and down to 18% below the barrier was performed using a proton beam energy (Ep) of 7-15 MeV from the VECC Cyclotron. The yield of suitable γ rays emitted following the decay of relevant evaporation residues was determined using a 50% high-purity germanium (HPGe) detector. The (p,n) cross section was found to follow the expected trend with a maximum value of 63.7(4.9) mb at Ep~8.6 MeV. The (p,2n) cross section gradually increased with Ep and had a maximum contribution to the total reaction cross section after Ep~9.0 MeV. The (p,p'n) reaction channel also showed a reasonable yield with a threshold of Ep~12.0 MeV. The experimental data were corroborated with statistical model calculations using different codes, viz., cascade, alice/91, and empire3.1. All the calculations using a suitable set of global parameters could reproduce the excitation function fairly well in the present energy range. [ABSTRACT FROM AUTHOR]

The excited states of the 199Tl nucleus have been studied by using the light ion induced fusion evaporation reaction 197Au(α,2n)199Tl at 30 MeV of beam energy by γ-ray spectroscopic methods. VECC Array for NUclear Spectroscopy (VENUS) has been used to detect the prompt γ rays. Level scheme of 199Tl has been significantly improved and extended with the placement of 53 new transitions. The yrast πh9/2 band has been extended in this nucleus beyond the band crossing. Several new near- and non-yrast band structures have also been identified. It has been observed that in case of the three-quasiparticle structures, a different configuration involving negative parity neutron orbitals becomes yrast for heavier Tl isotopes with N≥118 in contrast to the involvement of the neutron i13/2 orbital for lighter Tl isotopes. It was possible to identify both the yrast and the non-yrast states corresponding to these configurations in the present work. The observed band structures have been interpreted in light of the systematics of the neighboring odd mass Thallium nuclei. Total Routhian surface calculations have been performed to study the deformation and shape changes as a function of rotational frequency in this nucleus. [ABSTRACT FROM AUTHOR]

In this Rapid Communication we report a phenomenon in a disordered interacting electron system. The measurements of structural, magnetic, and transport properties of FeAl2-xGax (0≤x≤0.5) show that antiferromagnetic transition in these intermetallic compounds occurs concomitantly with a disorder-induced weak localization of electrons; the temperatures TN and Tm, at which antiferromagnetic transition and the weak localization respectively occur, closely track each other as the Ga concentration is varied. The antiferromagnetic transition is confirmed from the magnetic and specific heat measurements, and the occurrence of weak localization is confirmed from the temperature variation of resistivity and magnetoresistance measurements. With increasing Ga concentration, substitutional disorder in the system increases, and the consequent disorder-enhanced magnetic exchange interaction and disorder-induced fluctuations simultaneously drive antiferromagnetic transition and weak localization, respectively, to higher temperatures. [ABSTRACT FROM AUTHOR]