Document Details


Title:
OPERATION GREENHOUSE, SCIENTIFIC DIRECTOR'S REPORT, ANNEX 1.12 LONG-DISTANCE MEASUREMENT OF ENERGY YIELD OF AN ATOMIC EXPLOSION, NUCLEAR EXPLOSIONS 1951 (DELETED)
Author(s):
HUOGINES, A J [* UNIVERSITY OF CALIFORNIA RADIATION LABORATORY]
Subject Terms:
GREENHOUSE OPERATION; MEASURING METHODS; PHOTOTUBES; FISSION YIELD; EASY-0451 EVENT; NUCLEAR EXPLOSIONS
Document Location:
Location - NNSA/NSO Nuclear Testing Archive Address - P.O. Box 98521 City - Las Vegas State - NV Zip - 89193-8521 Phone - (702)794-5106 Fax - (702)862-4240 Email - CIC@NV.DOE.GOV
Document Type:
REPORT
Publication Date:
1951 Oct 31
Declassification Status:
Sanitized
Document Pages:
0057
Accession Number:
NV0051372
Document Number(s):
WT106EX
OpenNet Entry Date:
1994 Aug 26
Description/Abstract:
THE ENERGY YIELD OF AN ATOMIC EXPLOSION HAS BEEN DETERMINED AT LONG DI STANCE BY MEASURING THE TIME VARIATION OF THE LIGHT FROM THE EXPLOSION AND APPLYING AN EMPIRICAL FORMULA WHICH RELATES THIS TO THE ENERGY YI ELD. THE LIGHT WAS DETECTED BY AN RCA 5819 PHOTOMULTIPLIER TUBE AND WA S RECORDED ON A MAGNETIC-TAPE RECORDER. MEASUREMENTS AT SHOT EASY WERE MADE FROM A C-54 AIRPLANE FLYING AT 12,500 FT AT A DISTANCE OF 630 MI LES NORTHWEST OF ENIWETOK. THE TIME TO THE MINIMUM OF LIGHT INTENSITY WAS 23.5 PLUS OR MINUS 0.8 MSEC, CORRESPONDING TO A YIELD OF 53 PLUS O R MINUS 4 KT. THE YIELD CALCULATED FROM THE RADIOCHEMICAL MEASUREMENTS WAS 46.8 PLUS OR MINUS 1.0 KT. THE PEAK INTENSITY OF THE FLASH ABOVE THE AMBIENT WAS MEASURED TO BE 1.7 MILLICANDLES/SQ FT. THIS EXPERIMENT INDICATED THAT ENERGY YIELD CAN BE MEASURED AT A DISTANCE GREATER THA N 630 MILES AT NIGHT. POSSIBLE PROPAGATION MECHANISMS ARE DISCUSSED. S TUDIES OF THE MAXIMUM RANGE IN DAYLIGHT AND OF IMPROVEMENTS IN TECHNIQ UE ARE SUGGESTED.


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