|Source||United States Department of Energy Office of Scientific and Technical Information|
|Subject Keyword||PHYSICS ♦ ALPHA PARTICLES ♦ BALLOONS ♦ COSMIC RADIATION ♦ DIPOLES ♦ EARTH ♦ ENERGY RANGE ♦ FISSION ♦ FORBUSH DEPRESSION ♦ GEOMAGNETIC CUT-OFF RIGIDITY ♦ INTERACTIONS ♦ LEVELS ♦ MAGNETIC FIELDS ♦ MEASURED VALUES ♦ NEUTRONS ♦ NUCLEI ♦ PRIMARY COSMIC RADIATION ♦ PROTONS ♦ SEA ♦ SEA LEVEL ♦ STRATOSPHERE ♦ VARIATIONS|
|Abstract||The primary alpha -particle intensity and the total cosmic radiation were measured over Nontheru Germany (cut-off for protons 1.46 Bev, eccentric dipole) with a balloon sonde during a strong Forbush effect on July 16, 1959. The vertical alpha -particle flux extrapolated to 0 g/cm/sup 2/ was found to be (0.0105 approximately 0-0007) (cm/sup 2/s sr)/sup -1/, allowing for the fragmentation of heavier nuclei. The extrapolated value of the total radiation amounted to (0.0891 plus or minus 0.0015) (cm/sup 2/s sr)/sup -1/. On November 3, 1959, the measurement of the alpha -particles showed an extrapolated vertical flux of (0.0124 approximately 0.0025) particles/ (cm/sup 2/s sr) and the total radiation amounted to (0.1043 plus or minus 0.0042) particles/(cm/sup 2/s sr) (cut-off for protons 1.72 Bev). A comparison of the radiation values from July 16, 1959, Nov. 3, 1959, and Apr. 4, 1957 proved a variation of the hard component at high altitudes which was larger by the factor 1.9 plus or minus 0.3 than that of neutrons on ground level at Lindau. For the alpha -particles this variation factor was 1.5 plus or minus 0.5. (auth)|
|Learning Resource Type||Article|
|Publisher Department||Max-Planck-Institut fur Aeronomie, Lindau/Harz, Ger.|
|Organization||Max-Planck-Institut fur Aeronomie, Lindau/Harz, Ger.|
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