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We have calculated excitation functions of incomplete fusion, complete fusion and total fusion processes for 9Be+64Zn system at near and above barrier energies. In particular, breakup effects of weakly bound projectile 9Be, which has been considered as a two body system (8Be+n) with a breakup threshold of 1.667 MeV, have been studied. The calculations are performed by using the code FRESCO, which is based on Continuum Discretized Coupled Channel (CDCC) approach. The present analysis of the total fusion excitation function for the system 9Be+64Zn shows that it is suppressed at above barrier energies and enhanced at sub barrier energies when the breakup effects are taken into account. In addition, the comparison of the probabilities of incomplete fusion from neutron capture and that from alpha capture shows the dominance of former over later.
The elastic scattering angular distributions and the fusion excitation function data for the reactions induced by the loosely bound projectile 9Be on 27Al, 28Si, 144Sm and 208Pb targets at near and above barrier energies have been analyzed with a motive to investigate the importance of breakup couplings within the framework of continuum discretized coupled channels approach. It is found that at energies much higher than Coulomb barrier, the breakup effects are insignificant for light targets while for heavy targets, the breakup effects play a dominant role at these energies. But at energies comparable to the barrier height, the role of breakup becomes crucial for light mass targets also.
The excitation functions for total, complete and incomplete fusion (TF, CF and ICF) mechanisms have been investigated for 9Be + 181Ta system at near and above barrier energy region. The calculations are performed by employing the code FRESCO based on continuum discretized coupled channel (CDCC) method. An enhancement is observed in the TF excitation function with respect to the data when breakup couplings are taken into account. Further, the CF and ICF probabilities, defined as the ratio of CF (ICF) cross-sections to the TF cross-sections, are also calculated. The dominance of breakup induced fusion is noticed at near barrier energies.
Normal physiological activities are often affected by some drugs, and some ion channels are blocked due to the katogene of drugs. This paper investigates the propagation of ordered waves in neuronal networks induced by diffusive poisoning, where the process is measured by increasing the number of neurons in the poisoned area of the networks. A coefficient of poisoning K is defined to measure the time units from one poisoned site to the adjacent site, a smaller K means that more neurons are poisoned in a certain period (a higher poisoning speed). A statistical factor of synchronization R in the two-dimensional array is defined to detect the transition of spiral waves induced by ion channel blocking. It is confirmed that the evolution of the spiral waves depends on the coefficient of poisoning K and number of poisoned neurons. Furthermore, breakup of the spirals is observed when weak channel noise is considered. Finally, the formation of the spiral wave induced by blocking the target wave with line defects is briefly discussed.
Recent results on spin effects in few nucleon systems obtained at Nuclotron-JINR are presented. The data on the deuteron analyzing powers in different reactions in the wide energy range demonstrate the sensitivity to the short-range spin structure of the light nuclei. The future plans on the studies with polarized deuterons from new polarized ion source at Nuclotron will be reported.
The surface hydrophilicity affects the movement of the droplet intensively when the droplet impacting on a wall, In this paper, the motion of the droplet after impacting on the superhydrophobic wall were researched by using the combined Level Set-VOF method for gas-liquid interface tracking. The results show that, the droplet would rebound after impacting on the superhydrophobic wall when the velocity is small: the droplet would breakup after when the velocity is larger; the droplet would breakup during spreading when the initial diameter is larger and less surface tension: impact angle affect the movement of the chop-let intensively after impacting on the wall. At the same time, this paper obtains critical conditions of rebound an breakup after droplet impacts on the superliydrophbic wall by vertical or inclined angle through numerical simulation in a certain range of condition.