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AbstractAbstract
[en] A solid termoluminescent dosemeter of sodium tetraborate and brazilian fluorite sensible to thermal neutrons is described. The nuclears reactions 1)10B + n → 7Li + He + Q1 (6,1%) where: Q1=2,79 MeV and Eα1 = 1,758 MeV and 2)10B + n → 7Li* + 4He + Q2 (93,9%) where: Q2 = 2,316 MeV and E2α2 = 1,474 MeV are responsible by the thermoluminescent response of the thermal neutrons dosemeters. The stages in the fabrication process of this dosemeter of which are:1) sodium tetraborate vitrification, 2) mixture and pressing 3) sintering are cited. The obtainment of a natural fluorite dosemeter with sodium chloride is also shown. (C.G.C.)
[pt]
Descreve-se um dosimetro termoluminescente solido de tetraborato de sodio e fluorita brasileira sensivel a neutrons termicos. As reacoes nucleares 1) 10B + n → 7Li + He + Q1 (6,1%) onde: Q1 = 2,79 MeV e Eα1 = 1,758 MeV e 2) 10B + n → 7Li* + 4He + Q2 (93,9%) onde: Q2 = 2,316 MeV e E2α2 = 1,474 MeV sao as responsaveis pela resposta termoluminescente dos dosimetros dos neutrons termicos. Citam-se as etapas do processo de fabricacao deste dosimetro as quais sao: 1) vitrificacao do tetraborato de sodio, 2) mistura e prensagem a frio, 3) sinterizacao. Mostra-se tambem a obtencao de um dosimetro de fluorita natural com cloreto de sodio. (C.G.C.)Original Title
Dosimetro termoluminescente solido de tetraborato de sodio e fluorita brasileira sensivel a neutrons termicos
Source
Associacao Brasileira de Fisicos em Medicina, Sao Paulo, SP (Brazil); 258 p; 1987; p. 158-165; 2. Brazilian Congress of Physicists in Medicine; Sao Paulo, SP (Brazil); 10-15 Oct 1987
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