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Rentgen.
Rentgen — rentgen va gammanurlanishlar ekspozitsiya dozasining birliklar tizimiga kirmagan birligi; ular havoni ionlash taʼsirini ifodalaydi. V. K. Rentgen sharafiga qoʻyilgan. R bilan belgilanadi. 1 R rentgen va gammanurlanishda ishtirok etuvchi elektronlar 0,001293 g havoda bir xil ishorali barcha ionlarning yigindi zaryadi 4’YU Kl ga teng boʻlgan ionlarni hosil qiladigan doza. 1 R 1 sm³ havoda 2,083109 juft ion yoki 1 g havoda 1,61 10’2 juft ion borligini anglatadi. Rentgen Xalqaro birliklar tizimidatk ekspozitsiya dozasi (Kl/kg) bilan kuyidagicha bogʻlangan: 1 R=2,57976104 Kl/kg . Dozimetriyada rentgenning fizik ekvivalenti RFE va biologik ekvivalenti RBE degan doza birliklar i mavjud. RFE turli ionlovchi nurlanishni ifodalaydi; unda 1 g moddada yutilgan energiya miqdori 1 R dozali rentgen yoki gammanurlanish 1 g havoni ionlash uchun sarf qilgan energiyasi miqdoriga teng . 1 RFE = 85 erg/g . RBE turli ionlovchi nurlanishning biologik toʻqimada yutilgan shunday mik,doriki, uning biologik taʼsiri 1 R dozali rentgen yoki gammanurlanishning taʼsiriga ekvivalent. Rentgen texnika, tibbiyot va boshqa sohalarda keng qoʻllanadi[1].
- ↑ OʻzME. Birinchi jild. Toshkent, 2000-yil
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