Accession Number:

AD0672313

Title:

CALCULATED SPECIFIC YIELD FUNCTIONS FOR NEUTRON MONITORS.

Descriptive Note:

Final rept. 15 May 67-14 May 68,

Corporate Author:

BENDIX CORP ANN ARBOR MICH AEROSPACE SYSTEMS DIV

Personal Author(s):

• Wainio,Kendle M.
• Colvin,Theodore H.
• More,Keith A.
• Riffany,Otho L.

Report Date:

1968-06-15

Pagination or Media Count:

40.0

Abstract:

Results of calculations to determine specific yield functions for IGY neutron monitors are reported for vertically incident protons in the range of 0.5 to 3 Gvc. The Monte Carlo method is used to calculate secondary nucleon flux intensities at various depths in the atmosphere. Experimental data on neutron monitor response are employed to relate the calculated flux data to count rates and hence to specific yields. The specific yield function was also calculated as a function of the angle of incidence of the primary cosmic ray flux. The results show that a significant fraction of counts in a neutron monitor is produced by particles incident from directions other than the vertical. Author

Descriptors:

• (*COSMIC RAYS
• RADIATION MONITORS)
• (*RADIATION MONITORS
• NUMERICAL ANALYSIS)
• (*NEUTRON COUNTERS
• NUMERICAL ANALYSIS)
• SOLAR RADIATION
• PROTONS
• SECONDARY EMISSION
• DISTRIBUTION FUNCTIONS
• RESPONSE

Subject Categories:

• Atmospheric Physics
• Nuclear Instrumentation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE