Published February 1986 | Version v1
Report Open

Gamma-ray background induced in a double Ge (Li) spectrometer at ballon altitudes in the hemisphere

Creators

  • 1. Instituto de Pesquisas Espaciais, Sao Jose dos Campos (Brazil)
  • 2. Toulouse-3 Univ., 31 (France). Centre d'Etude Spatiale des Rayonnements

Description

A double coaxil Ge(li) spetrometer has been flown for the first time in December, from the Southern Hemisphere and the induced background at ceiling in the diodes was studied. During the flight, different anti-coincidence modes were operated to estimate the gamma-ray lines. The results of 511 Kev line show that the fluxes detected by the upper diode are in good agreement with previous measurements, and indicate a probable contamination of the lower diode. (Author)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (Portuguese)

Um espectrometro Ge(Li) coaxial duplo foi lancado pela primeira vez do Hemisferio Sul, em dezembro de 1983, e a radiacao de fundo dos dioxidos no teto atingido foi estudada. Durante o voo, diferentes modos anticoincidentes foram operados para estimar a producao de linhas de raios gama. Os resultados da linha de 511 Kev mostram que os fluxos detalhados pelo diodo superior estao em boa concordancia com medidas anteriores e indicam uma provavel contaminacao do diodo inferior. (M.C.K.)

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Additional details

Publishing Information

Imprint Pagination
26 p.
Report number
INPE--3797

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
18010327
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Descriptors DEI
ANTICOINCIDENCE; BACKGROUND RADIATION; BALLOONS; COSMIC GAMMA SOURCES; GAMMA SPECTROSCOPY; KEV RANGE 100-1000; LEVELS; LI-DRIFTED GE DETECTORS; SEMICONDUCTOR DIODES
Descriptors DEC
COSMIC RAY SOURCES; ENERGY RANGE; GE SEMICONDUCTOR DETECTORS; KEV RANGE; LI-DRIFTED DETECTORS; MEASURING INSTRUMENTS; RADIATION DETECTORS; RADIATIONS; SEMICONDUCTOR DETECTORS; SEMICONDUCTOR DEVICES; SPECTROSCOPY