Admixtures in Spent Plutonium Sources and Gamma-Radiation Priemai os naudotuose plutonio altiniuose ir gama spinduliuot

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±0.028) MBq to (91.2±4.6) 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 dūm jutikliuose skai iavimo rezultatai. Gautos vert s kinta nuo 0,934±0,028 MBq iki 91,2±4,6 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 dūm jutikliuose. Nustatyta, kad metin i orin ap vita mogui, dirban iam patalpoje, kurioje montuotas dūm jutiklis, kinta nuo 0,06 mSv iki 0,31 mSv. Straipsnis lietuvi kalba