%0 Journal Article
%T Admixtures in Spent Plutonium Sources and Gamma-Radiation Priemai os naudotuose plutonio  altiniuose ir gama spinduliuot
%A Inga Pelanyt£¿
%A Stasys Motiej¨±nas
%A Ar¨±nas Gudelis
%J Science ¨C Future of Lithuania
%D 2009
%I Vilnius Gediminas Technical University
%R 10.3846/165
%X The isotopic composition of several spent smoke detectors containing plutonium has been investigated. The article also presents the calculated results of 241Am and 241Pu activities in smoke detectors. The received values vary from (0.934¡À0.028) MBq to (91.2¡À4.6) MBq. The eguivalent dose rate of the established gamma radiation vary from 220 nSv/h to 500 nSv/h. A dose caused by artificial radionuclides in spent smoke detectors was evaluated and compared in the article. It has been found out that due to smoke detectors, an annual dose varies from 0.06 mSv to 0.31 mSv.  Article in Lithuanian  iame darbe nagrin jama naudot  plutonio  altini  izotopin  sud tis ir galim  priemai ini  radionuklid   taka  moni  saugai. Pateikti radionuklid  americio 241Am ir plutonio 241Pu aktyvumo d¨±m  jutikliuose skai iavimo rezultatai. Gautos vert s kinta nuo 0,934¡À0,028 MBq iki 91,2¡À4,6 MBq. I matuota gama spinduliuot s sukelta lygiavert s doz s galia. Nustatytos lygiavert s doz s galios vert s kinta nuo 220 nSv/h iki 500 nSv/h. Vidutin  doz s galia patalpoje yra apie 140 nSv/h.  vertinta i orin  ap vita, sukelta dirbtin s kilm s americio 241Am radionuklid , esan i  naudotuose d¨±m  jutikliuose. Nustatyta, kad metin  i orin  ap vita  mogui, dirban iam patalpoje, kurioje  montuotas d¨±m  jutiklis, kinta nuo 0,06 mSv iki 0,31 mSv.  Straipsnis lietuvi  kalba
%K smoke detectors
%K gama spectrometric research
%K activity
%K external gama irradiance
%U http://www.mla.vgtu.lt/index.php/mla/article/view/165