PROPAGATION EFFECTS OF SOLAR COSMIC RAYS

CHANG KONG-LIANG

Chinese Physics C> 1978, Vol. 2> Issue(5) : 385-393

PROPAGATION EFFECTS OF SOLAR COSMIC RAYS

CHANG KONG-LIANG

Institute of Space Physics, Sian

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Abstract：
Computer calculations have been made on the dimensional solution to the anisotropic diffusion convection equation for solar cosmic rays propagating in an uniform and unbounded interplanetary medium. This paper presents the results calculated by means of Jokipii's diffusion coefficients. Discussion is restricted to the influences of solar wind convection on the rise to maximum times and on the peak intensities of solar cosmic ray events with solar corotation effect taken into consideration. The model well explains the asymmetrical variations of the propagation charateristics of the events with solar longitudes of their parents flares relative to the interplanetary magnetic field lines passing through the earth, and the theoretical curves of the rise times fit satisfactorily the observations of solar events ranging from relativistic to about 30 MeV medium energies.

References

[1]

章公亮，高能物理与核物理，2 (1978), 200,[2] 章公亮，太阳质子事件的传播改正，(未发表).[3] L. F. Burlaga, Journ. Geophys. Res., 72(1967), 4449.[4] M. A. Forman, Journ. GeoPhys. Res., 76(1971), 759.[5] J. B,. Jokipii, Rev. Geophys. Space Phys., 9(1971), 27.[6] S. M. Krimigis, Journ. GeoPhys. Res.,70(1965), 2943.[7] J. A. Lockwood, Journ. Geophys. Res., 73(1968), 4247.[8] J. A. Lockwood, Journ. Geophys. Res., 79(1974), 4149.[9] J. E. Lupton and E. C. Stone, Journ. GeoPhys. Res., 78(1973), 1007.[10] Z, #352;vestka and P. Simon, "Catlog of Solar Particle Events 1955一1969 ", (D. Reidel Pub.Co. Dordrecht-Holland, 1975).[11] "Solar Geophysical Data 1965-1972", (U. S. Depar. of Commerce, Boulder Colorado USA,1965-1972).

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CHANG KONG-LIANG. PROPAGATION EFFECTS OF SOLAR COSMIC RAYS[J]. Chinese Physics C, 1978, 2(5): 385-393.

CHANG KONG-LIANG. PROPAGATION EFFECTS OF SOLAR COSMIC RAYS[J]. Chinese Physics C, 1978, 2(5): 385-393. shu

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Received: 1977-08-16
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

PROPAGATION EFFECTS OF SOLAR COSMIC RAYS

CHANG KONG-LIANG

Institute of Space Physics, Sian

Received Date: 1977-08-16
Accepted Date: 1900-01-01
Available Online: 1978-10-05

Abstract: Computer calculations have been made on the dimensional solution to the anisotropic diffusion convection equation for solar cosmic rays propagating in an uniform and unbounded interplanetary medium. This paper presents the results calculated by means of Jokipii's diffusion coefficients. Discussion is restricted to the influences of solar wind convection on the rise to maximum times and on the peak intensities of solar cosmic ray events with solar corotation effect taken into consideration. The model well explains the asymmetrical variations of the propagation charateristics of the events with solar longitudes of their parents flares relative to the interplanetary magnetic field lines passing through the earth, and the theoretical curves of the rise times fit satisfactorily the observations of solar events ranging from relativistic to about 30 MeV medium energies.