Premium
GAMMA SCINTILLATION PROBE FOR FIELD USE AND MEASUREMENTS OF RADIATION BACKGROUND IN PUGET SOUND
Author(s) -
Proctor Charles M.,
Papadopulos Emanuel,
Firminhac Ralph H.
Publication year - 1962
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1962.7.3.0280
Subject(s) - sound (geography) , attenuation , scintillation , detector , environmental science , scintillator , scintillation counter , radiation , particle detector , physics , radiation monitoring , gamma ray , remote sensing , optics , acoustics , geology , nuclear physics
A probe containing a 5 × 4‐in. NaI(Tl) crystal was built for field survey work with a small ship and portable counting equipment. The gamma radiation background was measured to a depth of 80 m at 3 locations in the lower part of Puget Sound. The count rate decreased very rapidly and nonlinearly in the first few meters below the water surface. Precise control of detector depth is thus essential when measurements are being made near the surface. After background corrections have been made, the integrated gamma fluxes above 0.25 and 1.6 Mev follow published curves for cosmic ray attenuation quite closely.