Accession Number:

ADA043967

Title:

Vertical Cutoff Rigidity and the Intensity Distribution of Cosmic Rays near Cape Town.

Descriptive Note:

Interim rept.,

Corporate Author:

AIR FORCE GEOPHYSICS LAB HANSCOM AFB MASS

Report Date:

1977-09-06

Pagination or Media Count:

6.0

Abstract:

A fairly sharp increase of 2.3 in the intensity of the nucleonic component of cosmic rays was observed at 30,000 feet pressure altitude along a contour of CONSTANT CALCULATED VERTICAL CUTOFF RIGIDITY ON A RESEARCH FLIGHT FROM Cape Town, South Africa, at 18 E longitude, to a point 2 W longitude. The increase seems to be an inherent feature of this region near the South Atlantic geomagnetic anomaly. Detailed cutoff rigidity calculations in vertical and inclined directions revealed that the observed increase may at least partly be ascribed to variation in effective cutoff rigidities along the route. However, the increase could also be attributed, at least as far as morphology is concerned, to the continuous precipitation in a restricted area of those high energy inner radiation belt protons that have short live-times. Author

Subject Categories:

  • Atmospheric Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE