Analysis of the Absorption Curves of Galactic Cosmic-Ray Flux in the Atmosphere for the Period of 1961 - 80
Abstract
Absorption curves of integral galactic cosmic ray flux over the period 1961-1980 are analyzed with a view towards finding further evidence of the effects of the solar magnetic field on galactic cosmic rays. The cosmic ray absorption curves were obtained in the stratosphere in the pressure range 5 to 85 g/sq cm at latitudes with geomagnetic cutoff rigidities of 0.6 and 2.3 GV. The mean free path of galactic cosmic ray flux is observed to vary with a period of 22 years, corresponding to the period of the solar magnetic cycle. In the period from 1961 through 1968, when the solar magnetic moment was antiparallel to its rotation axis, the absorption path averaged 73 g/sq cm, while after the solar magnetic field reversal from 1968-1972, the value of the absorption path averaged 62 g/sq cm. The decrease in mean free path indicates a possible increase in the nuclear component of galactic cosmic ray flux.
- Publication:
-
International Cosmic Ray Conference
- Pub Date:
- 1981
- Bibcode:
- 1981ICRC....3..210P
- Keywords:
-
- Atmospheric Attenuation;
- Cosmic Rays;
- Galactic Radiation;
- Radiation Absorption;
- Solar Activity Effects;
- Solar Magnetic Field;
- Stratosphere;
- Energy Absorption;
- Kinetic Energy;
- Magnetic Effects;
- Magnetic Moments;
- Mean Free Path;
- Particle Flux Density;
- Space Radiation;
- ATMOSPHERIC ATTENUATION;
- COSMIC RAYS;
- GALACTIC RADIATION;
- RADIATION ABSORPTION;
- SOLAR ACTIVITY EFFECTS;
- SOLAR MAGNETIC FIELD;
- STRATOSPHERE;
- ENERGY ABSORPTION;
- KINETIC ENERGY;
- MAGNETIC EFFECTS;
- MAGNETIC MOMENTS;
- MEAN FREE PATH;
- PARTICLE FLUX DENSITY