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Feasibility study of photodiodes utilization in the soil-moisture determination by gamma transmission; Estudo da viabilidade da utilizacao de fotodiodos na determinacao de umidade de solos por transmissao gama

Abstract

This study was done to verify the viability of photodiodes, as gamma radiation detector ({sup 241} Am - Energy=60 KeV), to measure soil water content. The photodiodes used had different mechanical and electrical characteristics, and were tested on soils of different textures. A good linear correlation between the logarithm of the attenuation factor and soil-moisture demonstrated such viability, and that the low photopeak efficiency of these devices is not a limitation to the measurement of soil water content. Furthermore, the stability, the portability, and low cost of such semiconductor devices, including its electronic system, represent relevant characteristics that may justify the development of a reliable gamma meter system for field studies. (author). 37 refs, 21 figs, 20 tabs.
Publication Date:
Aug 01, 1992
Product Type:
Miscellaneous
Report Number:
INIS-BR-3483
Reference Number:
SCA: 540211; PA: AIX-26:040414; EDB-95:072853; ERA-20:016543; NTS-95:021962; SN: 95001381756
Resource Relation:
Other Information: DN: PRONUCLEAR. Tese de Mestrado, 59.; TH: Tese (M.Sc.).; PBD: Aug 1992
Subject:
54 ENVIRONMENTAL SCIENCES; PHOTODIODES; SOILS; CALIBRATION; EXPERIMENTAL DATA; FEASIBILITY STUDIES; GAMMA RADIATION; HUMIDITY; MEASURING METHODS; TRANSMISSION; WATER
OSTI ID:
38157
Research Organizations:
Pernambuco Univ., Recife, PE (Brazil). Dept. de Energia Nuclear
Country of Origin:
Brazil
Language:
Portuguese
Other Identifying Numbers:
Other: ON: DE95626519; TRN: BR9532977040414
Availability:
INIS; OSTI as DE95626519
Submitting Site:
INIS
Size:
71 p.
Announcement Date:

Citation Formats

Santos, L A.P. dos. Feasibility study of photodiodes utilization in the soil-moisture determination by gamma transmission; Estudo da viabilidade da utilizacao de fotodiodos na determinacao de umidade de solos por transmissao gama. Brazil: N. p., 1992. Web.
Santos, L A.P. dos. Feasibility study of photodiodes utilization in the soil-moisture determination by gamma transmission; Estudo da viabilidade da utilizacao de fotodiodos na determinacao de umidade de solos por transmissao gama. Brazil.
Santos, L A.P. dos. 1992. "Feasibility study of photodiodes utilization in the soil-moisture determination by gamma transmission; Estudo da viabilidade da utilizacao de fotodiodos na determinacao de umidade de solos por transmissao gama." Brazil.
@misc{etde_38157,
title = {Feasibility study of photodiodes utilization in the soil-moisture determination by gamma transmission; Estudo da viabilidade da utilizacao de fotodiodos na determinacao de umidade de solos por transmissao gama}
author = {Santos, L A.P. dos}
abstractNote = {This study was done to verify the viability of photodiodes, as gamma radiation detector ({sup 241} Am - Energy=60 KeV), to measure soil water content. The photodiodes used had different mechanical and electrical characteristics, and were tested on soils of different textures. A good linear correlation between the logarithm of the attenuation factor and soil-moisture demonstrated such viability, and that the low photopeak efficiency of these devices is not a limitation to the measurement of soil water content. Furthermore, the stability, the portability, and low cost of such semiconductor devices, including its electronic system, represent relevant characteristics that may justify the development of a reliable gamma meter system for field studies. (author). 37 refs, 21 figs, 20 tabs.}
place = {Brazil}
year = {1992}
month = {Aug}
}