Document Details


Title:
OPERATION ARGUS, SOUNDING ROCKET MEASUREMENTS - PROJECT JASON ( EXTRACTED ) (DELETED)
Author(s):
BEAVERS, J L [AIR FORCE SPECIAL WEAPONS CENTER]; ALLEN, L [AIR FORCE SPECIAL WEAPONS CENTER]; DENNIS, J L [AIR FORCE SPECIAL WEAPONS CENTER]; WELCH, J A [AIR FORCE SPECIAL WEAPONS CENTER]; WALTON, R B [AIR FORCE SPECIAL WEAPONS CENTER]; WHITAKER, W A [AIR FORCE SPECIAL WEAPONS CENTER]
Subject Terms:
ARGUS OPERATION; MEASURING METHODS; BETA PARTICLES; EQUIPMENT; RESEARCH PROGRAMS; JASON PROJECT
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:
1961 May 31
Declassification Status:
Sanitized
Document Pages:
0084
Accession Number:
NV0051384
Document Number(s):
WT1669EX
OpenNet Entry Date:
1994 Aug 26
Description/Abstract:
THE GENERAL OBJECTIVE WAS TO MEASURE THE DISTRIBUTION OF BETA PARTICLE S ORIGINATING FROM THE ARGUS SHOTS AND SUBSEQUENTLY TRAPPED IN THE EAR TH'S MAGNETIC FIELD. THIS WAS ACCOMPLISHED WITH THE AID OF HIGH-ALTITU DE SOUNDING ROCKETS CONTAINING RADIATION COUNTERS. THE FLUX OF HIGH-EN ERGY ELECTRONS WAS MEASURED AS A FUNCTION OF: (1) MAGNETIC LATITUDE FR OM 23 TO 39 DEGREES, (2) ALTITUDE FROM SEA LEVEL TO 900 KM, (3) ELECTR ON ENERGY, (4) TIME AFTER THE NUCLEAR EXPLOSION, AND (5) ANGULAR DISTR IBUTION WITH RESPECT TO MAGNETIC FIELD. SOLID-PROPELLENT ROCKETS WERE SENT TO ALTITUDES OF 800 KM FROM THREE STATIONS IN THE EASTERN UNITED STATES. THE MAJOR EFFORT WAS MADE IN MONITORING THE ELECTRONS ARISING FROM THE BETA DECAY OF THE FISSION PRODUCT DEBRIS OF EVENT II, A ALL- FISSION DEVICE DETONATED 293 KM ABOVE THE SOUTH ATLANTIC. THE SPATIAL DISTRIBUTION OF THE ELECTRON FLUX REMAINED QUALITATIVELY CONSTANT ALON G MAGNETIC FIELD LINES, INDICATING THAT THE ELECTRONS WERE INDEED TRAP PE. THE ANGULAR DISTRIBUTION OF THIS FLUX WAS SHARPLY PEAKED IN DIRECT IONS PERPENDICULAR TO THE FIELD LINES. THE SPATIAL DISTRIBUTION CONSIS TED OF AN INTENSE SHELL (20-KM HALF-WIDTHAT HALF-HEIGHT ALONG THE MAGN ETIC LINE INTERSECTING THE EARTH AT 33.5 DEGREES NORTH NEAR 75 DEGREES WEST) AND LESS INTENSE WINGS EXTENDING TO AT LEAST 700 KM NORTH AND B ETWEEN 200 AND 700 KM SOUTH OF THE BAND. BOTH THE WINGS AND THE BAND D ECAYED DURING THE MEASUREMENTS (TO H+100 HOURS) AS 1/T, INDICATING SMA LL-ANGLE SCATTERING AS THE DOMINANT LOSS MECHANISM. THE POSITION AND W IDTH OF THE BAND DID NOT CHANGE DURING THE OBSERVATIONS. SPECTRAL MEAS UREMENTS SHOW FAR FEWER ELECTRONS ABOVE 4 MEV THAN EXPECTED FROM THE I NTEGRAL FISSION BETA SPECTRUM. DATA FROM TWO FLIGHTS INDICATE A BAND-W ING STRUCTURE FOR EVENT I SIMILAR TO EVENT II. DECAY BETAS FROM SHOT O RANGE AND PRESUMABLY SHOT TEAK OF OPERATION HARDTACK WERE OBSERVED WIT H AN INTENSITY IN AGREEMENT WITH PREDICTIONS IN REFERENCE 11. OVER THE OBSERVATION PERIOD OF 3 WEES, THIS RADIATION DECAYED MUCH FASTER THAN 1/T, SUGGESTING THAT THE EFFECTIVE LOSS MECHANISM WAS NOT SMALL-ANGLE SCATTERING BUT PERHAPS GEOMAGNETIC FLUCTUATIONS; AUGUST 1958 WAS A PE RIOD OF INCREASED GEOMAGNETIC ACTIVITY.


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