@article{3019382, title = "A periodical analysis of the cosmic-ray diffusion coefficient and the high-speed solar-wind streams", author = "Xanthakis, J. and Mavromichalaki, H. and Petropoulos, B. and Marmatsouri, E. and Vassilaki, A.", journal = "Earth, Moon, and Planets", year = "1988", volume = "43", number = "2", pages = "165-179", publisher = "Kluwer Academic Publishers", issn = "0167-9295, 1573-0794", doi = "10.1007/BF00056738", abstract = "A three-dimensional model for the calculation of cosmic-ray intensity of the Inuvik station during the 20th and 21st solar cycles is given. Especially we have studied the coefficient K of the used parameter of sunspot number in terms of high-speed solar-wind streams and have tried enough successfully to relate this coefficient with the diffusion process of cosmic rays in the interplanetary space. Analyzing these two data sets for the time-period 1964-1985 into a network of trigonometric series we have observed similar period in the two sets. It means that we have the same in general line variations in the high-speed streams as well as to the coefficient K expressed by this way the diffusion coefficient of cosmic-rays. © 1988 Kluwer Academic Publishers." }