عنوان مقاله :
بررسي لزوم استفاده از حفاظ سربي در اندازه گيري پرتوزايي مواد غذايي توسط آشكارسازهاي يدورسديم (تاليوم )
عنوان به زبان ديگر :
The Investigation of Lead Shield Application in Food Samples Spectrometry by NaI (TI) Detectors
پديد آورندگان :
نوشين حسين پورصيامي ، مترجم ,
اطلاعات موجودي :
فصلنامه سال 1384 شماره 25
كليدواژه :
Minimum Detectable Activity (MDA) , اسپكترومتري گاما , Bremsstrahlung , شمارش زمينه , Lead Shield , آشكارساز يدورسديم , Marinelli Beaker , Gamma Spectrometry , بازدهي آشكارساز , Background , حفاظ سربي , Detector Efficiency , تاليوم , NaI Detector , كمينه سطح پرتوزايي قابل اندازه گيري
چكيده لاتين :
The measurement of food radiation, as one of the most important parameters in food
consumption safety, is performed according to current regulations and standard tests in most countries including Iran.
Due to the presence of low-level radiation in Pod samples ,for gamma-ray spectroscopy, using lead shields. for reducing the background radiation is recommended. In this research,
the influence of lead shield on Nal (TO detector background is investigated and the amount of detection efficiency and MDA (Minimum Detectable Activity) with and without lead shield is evaluated
The results show that a properly designed lead shield is necessary for low-radiation
measurements. The shield discussed in the present study can improve MDA value for more than 100%.
عنوان نشريه :
علوم و تكنولوژي محيط زيست
عنوان نشريه :
علوم و تكنولوژي محيط زيست
اطلاعات موجودي :
فصلنامه با شماره پیاپی 25 سال 1384
كلمات كليدي :
#تست#آزمون###امتحان
