RESUMO
We analyze the origins of the luminescence in germania-silica fibers with high germanium concentration (about 30 mol.% GeO2) in the region of 1-2 µm with a laser pump at the wavelength 532 nm. We show that such fibers demonstrate the high level of luminescence which unlikely allows the observation of photon triplets, generated in a third-order spontaneous parametric downconversion process in such fibers. The only efficient approach to the luminescence reduction is the hydrogen saturation of fiber samples; however, even in this case, the level of residual luminescence is still too high for three-photon registration.
RESUMO
More than 7.5 thousands of people work as military and civilian personnel and have an access to a lot of sources of ionizing radiation on ships and vessels, at coastal units and institutions of the Navy. This fact determines the importance of radiation safety and medical preventive measures on naval fleets. The article analyses the state of radiation-hygienic measures, outlines the conceptual basis for the development of radiation hygiene in the Navy. Substantiated reconstruction tasks effectiveness of health control and state sanitary and epidemiological supervision of radiation safety, provides information about the optimal set of instruments for radiation monitoring equipment radiobiological laboratories and centres of state sanitary and epidemiological supervision at various levels.
Assuntos
Higiene Militar/métodos , Medicina Naval , Monitoramento de Radiação/métodos , Proteção Radiológica/métodos , Saúde Radiológica , Regulamentação Governamental , Higiene Militar/legislação & jurisprudência , Higiene Militar/organização & administração , Higiene Militar/normas , Militares , Medicina Naval/organização & administração , Medicina Naval/normas , Medicina Naval/tendências , Monitoramento de Radiação/legislação & jurisprudência , Proteção Radiológica/legislação & jurisprudência , Proteção Radiológica/normas , Radiação Ionizante , Saúde Radiológica/organização & administração , Saúde Radiológica/normas , Saúde Radiológica/tendências , Federação Russa , Segurança , NaviosRESUMO
The article contains results of fulfilled studies that allowed finding main features of radiology safety, working out academic and research recommendations to perfect radiology safety in treatment-and-preventive institutions (TPI) and creating a method of calculation of authorized staffing needed by radiological safety services. It was established that the following actions are least fulfilled: radiation control, organization of radiation safety education, authorization for work with ionizing radiation both for military men and civil staff, maintenance of documentation. We suggest that promising direction of optimization of providing radiological safety in large-scale TPI is the following: allotment of special structure that will provide comprehensive fulfillment of regulatory documents demands, it may be, e. g. radiological safety service.
