{"title":"含氧杂质铀-钚单氮和裂变产物气相组成的建模","authors":"G. S. Bulatov, K. E. German","doi":"10.1134/S1066362225010059","DOIUrl":null,"url":null,"abstract":"<p>The composition of the gas phase over uranium–plutonium nitride U<sub>0.8</sub>Pu<sub>0.2</sub>N<sub>0.995</sub>0<sub>0.005</sub> containing oxygen impurities and fission products after fast neutron irradiation to a burnup of 13.6% heavy atoms (h.a.) was subjected to a thermodynamic analysis in the temperature interval 900–2000 K. In this interval, the accumulation of fission products in the fuel leads to the formation of a multicomponent gas phase containing the following main elements and compounds: fuel species (Pu, PuO, PuN, U, UO, UN), highly volatile species (Cs, N<sub>2</sub>, Ba, Sr, CsI, BaI, SrI, I), volatile species (Te, Pd, BaO, NdO, LaO, SrO, CeO), low-volatile metals (Nd, Mo, Y, Tc, La, Ce, Zr), and low-volatile nitrides (NdN, LaN, CeN, YN, ZrN). The partial pressures of these components of the gas phase over U<sub>0.8</sub>Pu<sub>0.2</sub>N<sub>0.995</sub>0<sub>0.005</sub> at the 13.6% burnup as functions of temperature were calculated.</p>","PeriodicalId":747,"journal":{"name":"Radiochemistry","volume":"67 1","pages":"31 - 38"},"PeriodicalIF":0.9000,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Modeling of the Composition of the Gas Phase over Uranium–Plutonium Mononitride Containing Oxygen Impurities and Fission Products\",\"authors\":\"G. S. Bulatov, K. E. German\",\"doi\":\"10.1134/S1066362225010059\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The composition of the gas phase over uranium–plutonium nitride U<sub>0.8</sub>Pu<sub>0.2</sub>N<sub>0.995</sub>0<sub>0.005</sub> containing oxygen impurities and fission products after fast neutron irradiation to a burnup of 13.6% heavy atoms (h.a.) was subjected to a thermodynamic analysis in the temperature interval 900–2000 K. In this interval, the accumulation of fission products in the fuel leads to the formation of a multicomponent gas phase containing the following main elements and compounds: fuel species (Pu, PuO, PuN, U, UO, UN), highly volatile species (Cs, N<sub>2</sub>, Ba, Sr, CsI, BaI, SrI, I), volatile species (Te, Pd, BaO, NdO, LaO, SrO, CeO), low-volatile metals (Nd, Mo, Y, Tc, La, Ce, Zr), and low-volatile nitrides (NdN, LaN, CeN, YN, ZrN). The partial pressures of these components of the gas phase over U<sub>0.8</sub>Pu<sub>0.2</sub>N<sub>0.995</sub>0<sub>0.005</sub> at the 13.6% burnup as functions of temperature were calculated.</p>\",\"PeriodicalId\":747,\"journal\":{\"name\":\"Radiochemistry\",\"volume\":\"67 1\",\"pages\":\"31 - 38\"},\"PeriodicalIF\":0.9000,\"publicationDate\":\"2025-04-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Radiochemistry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S1066362225010059\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, INORGANIC & NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiochemistry","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S1066362225010059","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
Modeling of the Composition of the Gas Phase over Uranium–Plutonium Mononitride Containing Oxygen Impurities and Fission Products
The composition of the gas phase over uranium–plutonium nitride U0.8Pu0.2N0.99500.005 containing oxygen impurities and fission products after fast neutron irradiation to a burnup of 13.6% heavy atoms (h.a.) was subjected to a thermodynamic analysis in the temperature interval 900–2000 K. In this interval, the accumulation of fission products in the fuel leads to the formation of a multicomponent gas phase containing the following main elements and compounds: fuel species (Pu, PuO, PuN, U, UO, UN), highly volatile species (Cs, N2, Ba, Sr, CsI, BaI, SrI, I), volatile species (Te, Pd, BaO, NdO, LaO, SrO, CeO), low-volatile metals (Nd, Mo, Y, Tc, La, Ce, Zr), and low-volatile nitrides (NdN, LaN, CeN, YN, ZrN). The partial pressures of these components of the gas phase over U0.8Pu0.2N0.99500.005 at the 13.6% burnup as functions of temperature were calculated.
期刊介绍：
Radiochemistry is a journal that covers the theoretical and applied aspects of radiochemistry, including basic nuclear physical properties of radionuclides; chemistry of radioactive elements and their compounds; the occurrence and behavior of natural and artificial radionuclides in the environment; nuclear fuel cycle; radiochemical analysis methods and devices; production and isolation of radionuclides, synthesis of labeled compounds, new applications of radioactive tracers; radiochemical aspects of nuclear medicine; radiation chemistry and after-effects of nuclear transformations.
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