SPRING PEAK OF STRONTIUM-90 FALLOUT

Journal Article · Fri Sep 16 04:00:00 EDT 1960 · Science See Saiensu

DOI:https://doi.org/10.1126/science.132.3429.742· OSTI ID:4141940

Kuroda, P K; Hodges, H L; Fry, L M

An increasing trend of Sr/sup 90/ concentration in rain observed at Fayetteville, Ark., after November 1959 indicates that the seasonal and global movements of stratospheric air masses, such as described by Brewer and Dobson, play an important role in causing the spring peaks of the Sr/sup 90/ fall-out. (auth) The dosimeter described consists of a thin sheet ot plastic phosphor placed in a transparent unit density phantom. When irradiated by high-energy electrons, the absorbed dose at points in the phosphor is determined by observing the light emitted by means of a photomultiplier detector system. Depth dose and isodose curves for a 1 mm diameter beam of 1.5 mev electrons are shown. An important feature is the very large build-up effect of absorbed dose near the surface of the phantom. (auth)

• Research Organization: Univ. of Arkansas, Fayetteville
• Sponsoring Organization: USDOE
• NSA Number: NSA-14-024404
• OSTI ID: 4141940
• Journal Information: Science See Saiensu, Journal Name: Science See Saiensu Vol. Vol: 132; ISSN SIENDS1
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

AIR
FALLOUT
GEOPHYSICS
HEALTH AND SAFETY
MOTION
QUANTITY RATIO
RAIN
SEASONS
STRATOSPHERE
STRONTIUM 90
VARIATIONS