Nukleonika最新文献_第10页

Crystalline structures of Rb2UBr6 ionic conductor determined by neutron diffraction 用中子衍射法测定Rb2UBr6离子导体的晶体结构

IF 0.7 4区物理与天体物理

Nukleonika Pub Date : 2020-03-01 DOI: 10.2478/nuka-2020-0001

K. Małetka, E. Ressouche, Håkan Rundlőf, R. Tellgren, W. Szczepaniak, M. Zabłocka-Malicka

引用次数: 0

Quality assurance in radon SSNTD measurements : PHE experience 氡SSNTD测量的质量保证:PHE经验

IF 0.7 4区物理与天体物理

Nukleonika Pub Date : 2020-01-01 DOI: 10.2478/NUKA-2020-0016

J. Wasikiewicz

引用次数: 1

The effects of fuel type on control rod reactivity of pebble-bed reactor 燃料类型对球床堆控制棒反应性的影响

IF 0.7 4区物理与天体物理

Nukleonika Pub Date : 2019-12-01 DOI: 10.2478/nuka-2019-0017

Zuhair, Suwoto, T. Setiadipura, J. C. Kuijper

{"title":"The effects of fuel type on control rod reactivity of pebble-bed reactor","authors":"Zuhair, Suwoto, T. Setiadipura, J. C. Kuijper","doi":"10.2478/nuka-2019-0017","DOIUrl":"https://doi.org/10.2478/nuka-2019-0017","url":null,"abstract":"Abstract As a crucial core physics parameter, the control rod reactivity has to be predicted for the control and safety of the reactor. This paper studies the control rod reactivity calculation of the pebble-bed reactor with three scenarios of UO2, (Th,U)O2, and PuO2 fuel type without any modifications in the configuration of the reactor core. The reactor geometry of HTR-10 was selected for the reactor model. The entire calculation of control rod reactivity was done using the MCNP6 code with ENDF/B-VII library. The calculation results show that the total reactivity worth of control rods in UO2-, (U,Th)O2-, and PuO2-fueled cores is 15.87, 15.25, and 14.33%Δk/k, respectively. These results prove that the effectiveness of total control rod in thorium and uranium cores is almost similar to but higher than that in plutonium cores. The highest reactivity worth of individual control rod in uranium, thorium and plutonium cores is 1.64, 1.44, and 1.53%Δk/k corresponding to CR8, CR1, and CR5, respectively. The other results demonstrate that the reactor can be safely shutdown with the control rods combination of CR3+CR5+CR8+CR10, CR2+CR3+CR7+CR8, and CR1+CR3+CR6+CR8 in UO2-, (U,Th)O2-, and PuO2-fueled cores, respectively. It can be concluded that, even though the calculation results are not so much different, however, the selection of control rods should be considered in the pebble-bed core design with different scenarios of fuel type.","PeriodicalId":19467,"journal":{"name":"Nukleonika","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45442341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Study on irradiated D-mannose isolated from cranberry 辐照蔓越莓中D-甘露糖的分离研究

IF 0.7 4区物理与天体物理

Nukleonika Pub Date : 2019-12-01 DOI: 10.2478/nuka-2019-0018

G. Guzik, W. Stachowicz, J. Michalik

引用次数: 0

Cost-effective approach to lung cancer risk for a radiological dispersal device (RDD) scenario 放射分散装置(RDD)情景下肺癌风险的成本效益方法

IF 0.7 4区物理与天体物理

Nukleonika Pub Date : 2019-12-01 DOI: 10.2478/nuka-2019-0016

Karolina P. S. Costa, Sergio X. Lima, T. Brum, Z. R. Lima, J. Amorim, M. Healy, H. Vital, Matjaž Prah, E. Andrade

{"title":"Cost-effective approach to lung cancer risk for a radiological dispersal device (RDD) scenario","authors":"Karolina P. S. Costa, Sergio X. Lima, T. Brum, Z. R. Lima, J. Amorim, M. Healy, H. Vital, Matjaž Prah, E. Andrade","doi":"10.2478/nuka-2019-0016","DOIUrl":"https://doi.org/10.2478/nuka-2019-0016","url":null,"abstract":"Abstract A release of radioactive material into the environment can lead to hazardous exposure of the population and serious future concerns about health issues such as an increased incidence of cancer. In this context, a practical methodology capable of providing useful basic information from the scenario can be valuable for immediate decisions and future risk assessment. For this work, the simulation of a radiological dispersal device (RDD) filled with americium-241 was considered. The radiation dose simulated by the HotSpot code was used as an input to the epidemiological equations from BEIR V producing the data used to assess the risk of lung cancer development. The methodology could be useful in providing training for responders aimed to the initial support addressed to decision-making for emergency response at the early phase of an RDD scenario. The results from the simulation allow estimating (a) the size of the potentially affected population, (b) the type of protection action considering gender and location of the individuals, (c) the absorbed doses, (d) the matrix of lung cancer incidence predictions over a period of 5 years, and (e) the cost-effectiveness in the initial decision environment.","PeriodicalId":19467,"journal":{"name":"Nukleonika","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44720231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Calculated neutron energy dependence of the dose-response of large recombination chamber 大型复合室剂量反应的中子能量依赖性计算

IF 0.7 4区物理与天体物理

Nukleonika Pub Date : 2019-12-01 DOI: 10.2478/nuka-2019-0015

K. Tymińska, M. Gryziński, M. Maciak

引用次数: 0

Investigation of the level structure of 90Nb nucleus using the shell model 用壳层模型研究90Nb原子核的能级结构

IF 0.7 4区物理与天体物理

Nukleonika Pub Date : 2019-12-01 DOI: 10.2478/nuka-2019-0014

Wu Yi-Heng, Yang Dong, Ma Ke-yan, Luo Peng-Wei

引用次数: 1

Clinical advantages of using unflattened 6-MV and 10-MV photon beams generated by the medical accelerator Elekta Versa HD based on their dosimetric parameters in comparison to conventional beams 医用加速器Elekta Versa HD产生的非扁平6 mv和10 mv光子束的剂量学参数与常规光束的临床优势

IF 0.7 4区物理与天体物理

Nukleonika Pub Date : 2019-09-01 DOI: 10.2478/nuka-2019-0010

B. Baic, B. Kozłowska, R. Kwiatkowski, M. Dybek

{"title":"Clinical advantages of using unflattened 6-MV and 10-MV photon beams generated by the medical accelerator Elekta Versa HD based on their dosimetric parameters in comparison to conventional beams","authors":"B. Baic, B. Kozłowska, R. Kwiatkowski, M. Dybek","doi":"10.2478/nuka-2019-0010","DOIUrl":"https://doi.org/10.2478/nuka-2019-0010","url":null,"abstract":"Abstract Photon beams with wide energy ranges from 4 MV to 25 MV are commonly used in radiotherapy nowadays. In recent years, there has been a strong interest in a certain modification of a radiotherapeutic apparatus by the application of the so-called flattening filter-free (FFF) beam. Several advantages of FFF beams over standard flattening filter (FF) beams are noticed, and this technical solution has aroused great interest among radiotherapeutic facilities. The goal of the present study is to investigate the differences between the conventional FF and unflattened FFF 6-MV and 10-MV photon beams in some basic dosimetric parameters and their influence on the whole radiotherapeutic treatment. The data provided here include the detailed characteristics as follows: percent depth dose (PDD), beam profile, edge of a half-profile, total scatter correction factor (TSCF) and head scatter correction factor (HSCF) for FF and FFF 6-MV and 10-MV photon beams from the Elekta Versa HD accelerator in the Katowice Oncology Center in Poland.","PeriodicalId":19467,"journal":{"name":"Nukleonika","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42986382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Ecological analysis of heavy metal and radioactivity potential of Holocene sediments in Iznik Lake 伊兹尼克湖全新世沉积物重金属生态分析及放射性潜势

IF 0.7 4区物理与天体物理

Nukleonika Pub Date : 2019-09-01 DOI: 10.2478/nuka-2019-0013

Z. U. Yumun, E. Kam

{"title":"Ecological analysis of heavy metal and radioactivity potential of Holocene sediments in Iznik Lake","authors":"Z. U. Yumun, E. Kam","doi":"10.2478/nuka-2019-0013","DOIUrl":"https://doi.org/10.2478/nuka-2019-0013","url":null,"abstract":"Abstract In this study, the heavy metal and radioactive properties of Iznik Lake were investigated. Concentration values of the first (Ag, Bi, Mo, Sn, Se, Zn, As, B, Cd, Co, Cr, Cu, Ni, Pb, Pt and Sb) and second (Na, Mg, K, Ca, P, S, Fe, Al and Mn) group of elements in borehole 1 (BH-1) drilling did not show much variation from the top to the bottom of the drilling. Concentration values of the first group of elements in borehole 2 (BH-2) drill samples decreased at higher levels of drilling. In addition, natural and anthropogenic radionuclides were measured by gamma spectrometry, and the results of environmental natural radioactivity of Iznik Lake and its surroundings were determined. In the measurement results, Ra-226 was found to be below the world average value at all locations. It is assumed that the determination of K-40 values above the average values was due to agricultural activities carried out intensively in the study area. Th-232 values were found to be below the world average value in drilling samples; Cs-137 values were below the background level in all samples. According to these results, the study area does not contain any unnatural radioactivity.","PeriodicalId":19467,"journal":{"name":"Nukleonika","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43067511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Analysis of the BEAVRS PWR benchmark using SCALE and PARCS 利用SCALE和PARCS分析BEAVRS压水堆基准

IF 0.7 4区物理与天体物理

Nukleonika Pub Date : 2019-09-01 DOI: 10.2478/nuka-2019-0011

P. Darnowski, Michał Pawluczyk

{"title":"Analysis of the BEAVRS PWR benchmark using SCALE and PARCS","authors":"P. Darnowski, Michał Pawluczyk","doi":"10.2478/nuka-2019-0011","DOIUrl":"https://doi.org/10.2478/nuka-2019-0011","url":null,"abstract":"Abstract This paper presents an analysis of the Benchmark for Evaluation And Validation of Reactor Simulations (BEAVRS) performed using SCALE 6.1.2 and PARCS 3.2 computer codes. The benchmark specification contains a detailed design, operational data and measurements for a real 4-loop Westinghouse pressurized water reactor (PWR). The lattice physics simulations were prepared using TRITON depletion sequence and NEWT neutron transport solver (SCALE package). The 238-neutron group library based on evaluated nuclear data file – ENDF/B-VII nuclear data libraries was applied. A set of branch and burnup calculations was prepared, and group constants in the form of PMAXS files were generated with GenPMAXS. The full-core models were prepared using the PARCS nodal-diffusion core simulator. The PMAXS libraries were used with PARCS to investigate the core operation. The hot zero power measurement data, including control rod worths and critical boron concentrations, were compared using simulations, and satisfactory results were achieved. The first fuel cycle was simulated, and acceptable agreement with boron letdown curve and measurements were obtained. Finally, conclusions and recommendations for future research were presented.","PeriodicalId":19467,"journal":{"name":"Nukleonika","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41870953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12