Measurements of the Cosmic Ray Neutron Rate in the Himalayas and Australian Alps

Measurements of the Cosmic Ray Neutron Rate in the Himalayas and Australian Alps

The variation of (X-track density in boron-loaded emulsions and the star rate in C2 emulsions have been measured at the same sites at mountain altitudes at two latitudes. The (X-count is proportional to the slow neutron density in the atmosphere while the stars arise chiefly from fast neutrons. The...

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Veröffentlicht in:Australian J. Phys 1954-01, Vol.7 (4), p.601
1. Verfasser: Mather, KB
Format: Artikel
Sprache:eng
Schlagworte:
ABSORPTION
ALPHA PARTICLES
ATMOSPHERE
BORON
BORON 10
CAPTURE
COSMIC RADIATION
COSMIC RAY STARS
EARTH
ENERGY RANGE
FAST NEUTRONS
FISSION
INTERACTIONS
LATITUDE EFFECT
LEVELS
MAGNETIC FIELDS
MEASURED VALUES
NEUTRONS
NUCLEAR EMULSIONS
NUCLEONS
PHYSICS
VARIATIONS
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Beschreibung
Zusammenfassung:The variation of (X-track density in boron-loaded emulsions and the star rate in C2 emulsions have been measured at the same sites at mountain altitudes at two latitudes. The (X-count is proportional to the slow neutron density in the atmosphere while the stars arise chiefly from fast neutrons. The variation with altitude can be represented in each case by a simple exponential of the form: l=loe-X/L . Values were derived for the attenuation length L for each latitude:
ISSN:0004-9506
DOI:10.1071/PH540601