Tables of asymptotic directions and vertical cutoff rigidities for a five degree by fifteen degree world grid using the Finch and Leaton geomagnetic field model. Environmental research papers

Technical Report · Wed Jan 22 04:00:00 EST 1975

OSTI ID:7187339

Shea, M A; Smart, D F; McCall, J R; Gumm, B S

Tables of asymptotic directions and vertical cutoff rigidities for a five degree by fifteen degree world grid are presented. These values were obtained by the integration of vertically incident cosmic-ray trajectories through the Finch and Leaton (Epoch 1955) quiescent model of the geomagnetic field. The table of asymptotic directions contains the asymptotic latitudes and longitudes that specify the direction of approach, from interplanetary space, of a cosmic-ray particle. These asymptotic directions are given for each grid point for specific rigidities above the main cone cutoff rigidity. The table of vertical cutoff rigidities contains the geographic coordinates and L value of each location, together with the main cone cutoff rigidity, the Stormer cutoff rigidity, and the effective cutoff rigidity. (GRA)

• Research Organization: Air Force Cambridge Research Labs., L.G. Hanscom Field, MA (USA)
• OSTI ID: 7187339
• Report Number(s): AD-A-010426; AFCRL-TR-75-0042; AFCRL-ERP-498
• Country of Publication: United States
• Language: English

Related Subjects

640101 -- Astrophysics & Cosmology-- Cosmic Radiation
640203* -- Atmospheric Physics-- Magnetospheric Phenomena-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALBEDO
AZIMUTH
COSMIC RADIATION
DIMENSIONS
EARTH ATMOSPHERE
GEOMAGNETIC FIELD
HEIGHT
INFORMATION
IONIZING RADIATIONS
MAGNETIC FIELDS
MAGNETIC RIGIDITY
MAGNETOSPHERE
RADIATIONS
TABLES
TRAJECTORIES