Investigation of nucleon - unbound states in 29 Si and 29 P by the reaction 28 Si (d, pn)

The deuteron break-up reaction is a good tool to study nucleon unbound states o f atomic nuclei [1, 2]. In the present paper we are studying the proton unbound states o f 29P and the neutron unbound states o f 29Si via the 28Si(d, p n )28Si reaction. The experimental results and an analysis limited to the most prominent peaks in the spectra o f this reaction were published in an earlier work [3], Now an extended analysis is presented, based on the “ summed spectra” method [4] which enables us to identify even weak states in complicated spectra

Synthesis of new 4-butyl-arylpiperazine-3-(1H-indol-3-yl)pyrrolidine-2,5-dione derivatives and evaluation for their 5-HT1A_{1A} and D2_{2} receptor affinity and serotonin transporter inhibition

A series of novel 4-butyl-arylpiperazine-3-(1H-indol-3-yl)pyrrolidine-2,5-dione derivatives were synthesized and evaluated for their 5-HT$_{1A}$/D2 receptor affinity and serotonin reuptake inhibition. The compounds exhibited high affinity for the 5-HT$_{1A}$ receptor, (especially 4d K$_{i}$ = 0.4 nM) which depended on the substitution pattern at the phenylpiperazine moiety. From this series screen, compound 4c emerged with promising mixed receptor profiles for the 5-HT$_{1A}$/D2 receptors and the serotonin transporter (K$_{i}$ = 1.3 nM, 182 nM and 64 nM, respectively).long-chain arylpiperazinesdepression5-HT$_{1A}$ receptor ligandsschizophreniamulti-target ligand

Elastic scattering of 27.5 MeV alpha particles on 27^{27}Al, 28^{28}Si, 32^{32}S, Ti and 59^{59}Co nuclei and the r0r_{0} discrete ambiguity of the optical potential

Angular distributions for elastic scattering of alpha particles on $^{27}$Al, $^{28}$Si, $^{32}$S, Ti and $^{59}$Co nuclei have been measured in the angular range from about 20$^{\circ}$ to 179$^{\circ}$ (LAB). The experimental data were fitted with the optical model in full angular range. Many sets of four-parameter potentials, describing the elastic scattering, were found with the depths of the real part ranging from 40 to 450 MeV. A new discrete ambiguity in the optical model namely in $r_{0}$ was observed

Statistical analysis of excitation functions for elastic and inelastic scattering of α\alpha-particles on Mg and Si nuclei

The excitation functions for inelastic $\alpha$-scattering leading to the low lying excited states in $^{24}$Mg and $^{28}$Si were measured at $\Theta_{LAB}$ = 170°, 175° and 179° in the LAB energy range 22.75–28.40 MeV. Statistical analysis of these excitation functions and those previously measured for elastic scattering was performed. The direct interaction contribution $\mathit{y}_{D}$ to the reaction studied was obtained from probability distributions of cross sections and from correlation coefficients. Cross correlation coefficients between different reaction channels were calculated