No abstract

New measurement of sub-threshold K * (892) 0 and K 0 production is presented. The experimental data complete the measurement of strange particles produced in Al+Al collisions at 1.9A GeV measured with the FOPI detector at SIS/GSI. The K * (892) 0 /K 0 yield ratio is found to be 0.0315 ± 0.006(stat.) ± 0.012(syst.) and is in good agreement with the UrQMD model prediction. These measurements provide information on in-medium cross section of K + -π − fusion which is the dominant process on sub-threshold K * (892) 0 production. The FOPI Collaboration has performed a high statistics experiment to study strangeness production in Al+Al collisions at a beam kinetic energy of 1.9A GeV. The collected data sample is large enough to enable for the first time the reconstruction of deep sub-threshold resonance production of K * (892) 0 . This measurement extends the data to four strange particle species reported in and K 0 is detailed in the present letter and their yield ratio is compared to the predictions of the UrQMD transport model.The experiment was performed at the Heavy-Ion Synchrotron SIS of the GSI in Darmstadt by using an Al beam of kinetic energy of 1.9A GeV on an Al target. The target thickness was 567 mg/cm 2 and the average beam intensity was 8 · 10 5 ions/s. The FOPI detector is an azimuthally symmetric apparatus made of several sub-detectors which provide charge and/or mass determi-

The statistical approach to the thermal neutron radiography picture analysis is applied to evaluation of the experimental results obtained for drying of rectangular and cylindrical samples of granulated and rigid porous materials. We have shown that the time dependence of the standard deviation of image brightness reects the appearance and motion of the drying front observed during second period of the drying process. The results are discussed within a simple two-region model of the drying sample image.

No abstract

No abstract