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We present PhotonSTR-T18, a LabVIEW based package for the calculation of intensity correlation and structure functions from the measurement of the time of arrival of scattered photons from soft materials. PhotonSTR-T18 can calculate the intensity correlation and structure functions of the scattered photon history from one (auto-mode) and two independent sets of collected data (cross-mode) Here, we present a description of the software operation and functionalities. To validate our package capabilities, we present the analysis of data acquired from model colloidal nanoparticles embedded in polymer matrices. Our results compare quantitatively well with previous results, thus validating our software’s applicability in the field of photon correlation spectroscopy.

En este proyecto se desarrolló un detector compacto de fotones gama para imagen nuclear a través de un arreglo de plásticos centello gráficos y un tubo fotomultiplicador sensible a la posición, mejorando su resolución y la eficiencia de detección reduciendo el espacio ocupado por el equipo. Introduction. A conventional gamma camera consists of a scintillator material coupled to a photomultiplier tube. It transforms the photons of incident electromagnetic radiation into a signal that is then processed to show the distribution of the radioactive material within the patient. A functional image is one of the main applications of the gamma camera in nuclear medicine. The vast majority of these devices use inorganic scintillation crystals (such as sodium iodide, NaI), in addition to other basic devices such as the collimator, and the transducer to detect and measure the light intensity produced in the scintillator. The performance of the equipment depends on the material used for detection. Plastic scintillating materials represent a low-cost alternative, they are not hygroscopic and are not affected by the presence of acids, alkalis, alcohols, grease, or silicone fluids, in addition they can be manufactured in multiple sizes and shapes adapting to the transducers commercial and thus being able to find new applications such as gamma cameras in applications in medical physics. CONACyT