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Two stages in the accumulation of 137Cs by mushroom Suillus luteus after the Chornobyl accident 切尔诺贝利事故后蘑菇黄头菇积累137Cs的两个阶段
IF 0.3 Q4 PHYSICS, NUCLEAR Pub Date : 2021-09-25 DOI: 10.15407/jnpae2021.03.294
N. Zarubina, O. S. Burdo, L. P. Ponomarenko, O.V. Shatrova
Studies of the 137Cs content in fruit bodies of Suillus luteus in the territory of the Chornobyl exclusion zone and Kyiv region outside the zone were carried out during the period 1986 - 2020. It was found that the dynamics of 137Cs activity in the mushroom can be described as a two-stage process. The first stage since 1986 was characterized by the annual increase in levels of specific activity of 137Cs for the following 10 - 12 yrs. During the second stage, there has been a gradual decrease in concentrations of 137Cs. The ecological half-life of 137Cs in the mushroom at the second stage differs for different sampling sites. Its minimum values were noted at villages Yaniv and Novo-Shepelychy sampling sites inside the exclusion zone. The maximum of 137Cs ecological half-life in Suillus luteus was observed on the Rzhyshchiv sampling site, which is the most remote from the Chornobyl Nuclear Power Plant outside the exclusion zone.
1986 - 2020年对切尔诺贝利禁区内和区外基辅地区的黄柳果体137Cs含量进行了研究。结果表明,137Cs在蘑菇体内的活性可分为两个阶段。自1986年以来的第一阶段的特点是137Cs比活度水平在随后的10 - 12年中逐年增加。在第二阶段,137Cs的浓度逐渐下降。137Cs在蘑菇第二阶段的生态半衰期因采样地点不同而不同。在禁区内的Yaniv村和Novo-Shepelychy村采样点发现了其最小值。黄柳137Cs生态半衰期最大值出现在禁区外距离切尔诺贝利核电站最远的Rzhyshchiv采样点。
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引用次数: 2
6Li(10B,9Be)7Be reaction mechanisms. Structure and interaction of 9Be + 7Be nuclei 6Li(10B,9Be)7Be反应机理。9Be + 7Be原子核的结构和相互作用
IF 0.3 Q4 PHYSICS, NUCLEAR Pub Date : 2021-09-25 DOI: 10.15407/jnpae2021.03.230
A. Rudchik, A. A. Rudchik, O. Chepurnov, K. Rusek, K. Kemper, E. I. Koshchy, S. Mezhevych, Val. M. Pirnak, O. Ponkratenko, A. Stolarz, R. Siudak, A. P. Ilyin, Y. Stepanenko, V. Uleshchenko, Yu. O. Shyrma
New experimental data of angular distributions for the 6Li(10B,9Be)7Be reaction were measured at the energy Elab(10B) = 51 MeV for the ground states of nuclei and excited 0.429 - 7.2 MeV states of 7Be. The reaction experimental data were analyzed within coupled-reaction-channels method (CRC) for many types of the nucleon and cluster transfers which spectroscopic amplitudes (factors) in the 9Be and 7Be nuclei were calculated using translation invariant shell model. The Woods - Saxon potential was used for CRC-calculations. The 6Li + 10B potential parameters were deduced before from the analysis of experimental data of 10B ions scattering by 6Li nuclei at the energy Elab(10B) = 51 MeV, and the 9Be + 7Be potential parameters for exit reaction channel were deduced from the CRC calculations fitting to the reaction experimental data. Thus, the information about the 9Be + 7Be optical potential, the basic reaction mechanisms and the 9Be and 7Be nuclei structures were deduced.
在原子核基态Elab(10B) = 51 MeV和7Be激发态0.429 ~ 7.2 MeV下,测量了6Li(10B,9Be)7Be反应角分布的新实验数据。用耦合反应通道法(CRC)分析了多种类型的核子和簇转移的反应实验数据,并利用平移不变壳层模型计算了9Be和7Be核的光谱振幅(因子)。伍兹-撒克逊势用于crc计算。通过对6Li核在Elab(10B) = 51 MeV下对10B离子散射实验数据的分析,推导出了6Li + 10B的势参数,并根据与反应实验数据拟合的CRC计算推导出了出口反应通道的9Be + 7Be势参数。由此推导出了9Be + 7Be的光势、基本反应机理以及9Be和7Be的核结构等信息。
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引用次数: 0
Tritium in the hydro-ecosystem of the South-Ukrainian Nuclear Power Plant 南乌克兰核电站水生态系统中的氚
IF 0.3 Q4 PHYSICS, NUCLEAR Pub Date : 2021-09-25 DOI: 10.15407/jnpae2021.03.263
L. Grygorieva, A.O. Aleksieieva, O. V. Makarova
Based on the results of radioecological studies in the aquatic ecosystem of the South-Ukrainian Nuclear Power Plant region (SUNPP), the tritium content in technological reservoirs (cooling pond, biological pond of the cleaning station, splash pool) and adjacent surface and groundwater bodies were analyzed. It is shown that the average annual volumetric activity of tritium in the water of technological reservoirs of the SUNPP during 2014 - 2018 is kept at the level of 110 - 160 Bq/l, with a tendency to increase with an average annual rate of 12 - 13 Bq/l, which correlates with a decrease in the volume of blowdown water discharge from the cooling pond (about 8698 thousand m3 per yr). Higher levels of volumetric activity of tritium were registered in the water of technical wells - leakage markers in the technical system, which, moreover, are fed from the pools of cooling towers and spray units. The tritium content in the bioponds of the sewage system of the SUNPP decreased from more than 1000 Bq/l in the early 1990s to 100 - 130 Bq/l in 2017 - 2018, which led to a decrease in its level in the Trikratsky reservoir and should affect lowering its level in groundwater sources, which are located below the natural runoff. Taking into account the physicochemical properties of tritium and the conclusions of well-known scientists about the extremely rapid accumulation of tritium in the environment, the necessity of hydroecological monitoring of the tritium content in surface water bodies is substantiated, the water of which is used for irrigation of agricultural crops and which are hydrodynamically connected with the technological water bodies of the SUNPP, as well as sources of drinking water located downstream of the natural runoff from the technological reservoirs of the nuclear power plant.
根据南乌克兰核电站区域水生生态系统的放射生态学研究结果,分析了技术水库(冷却池、清洗站生物池、溅水池)和邻近地表水和地下水体中的氚含量。结果表明,2014 - 2018年,三峡工程技术水库氚的年平均体积活度保持在110 ~ 160 Bq/l,并有增加的趋势,年平均速度为12 ~ 13 Bq/l,这与冷却池排水量减少(约869.8万m3 /年)有关。技术井的水中氚的体积活度较高,这是技术系统中的泄漏标志,此外,这些水是从冷却塔和喷雾装置的水池中输入的。SUNPP污水系统生物池塘中的氚含量从20世纪90年代初的1000多Bq/l下降到2017 - 2018年的100 - 130 Bq/l,导致其在特里克拉茨基水库中的含量下降,并应影响其在地下水源中的含量降低,这些地下水源位于自然径流以下。考虑到氚的物理化学性质和著名科学家关于氚在环境中极快积累的结论,证实了对用于农业作物灌溉的地表水水体中氚含量进行水文生态监测的必要性,地表水水体与SUNPP技术水体在水动力学上有联系。以及位于核电站技术水库自然径流下游的饮用水源。
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引用次数: 0
Effect of additional "clean" feeding on 90Sr and 137Cs content in prussian carp (Carassius gibelio) in the Chornobyl exclusion zone 额外“清洁”饲喂对切尔诺贝利隔离区普鲁士鲤90Sr和137Cs含量的影响
IF 0.3 Q4 PHYSICS, NUCLEAR Pub Date : 2021-09-25 DOI: 10.15407/jnpae2021.03.272
P. Pavlenko, O. Kashparova, S. Levchuk, M. Hrechaniuk, I. Gudkov, V. Kashparov
Under natural conditions, in one of the most radioactively contaminated water bodies of the Chornobyl exclusion zone, lake Glyboke in 2020, experimental studies were carried out to assess the effectiveness of the use of additional "clean" feeding to reduce the levels of radioactive contamination of 90Sr and 137Cs in fish. The radiological efficiency of decreasing the 137Cs intake into the muscle tissue of fish with the use of additional "clean" feeding, mainly due to biological dilution, was 2.9 ± 0.4 times. The biological half-life of 137Cs in the muscle tissue of radioactively contaminated fish was 115 ± 25 days with the consumption of natural and additional "clean" food, which is approximately 2 times longer compared to the case when the fish consumes only clean food. In contrast to 137Cs, using additional "clean" feeding led to an increase of 90Sr content in the fish organism as compared to the control (up to 5 times) in proportion to the relative increase in the mass of fishbone tissue, which contains the bulk of strontium.
在自然条件下,在切尔诺贝利隔离区放射性污染最严重的水体之一,即2020年的格列伯克湖,进行了实验研究,以评估使用额外的“清洁”喂养来降低鱼类90Sr和137Cs放射性污染水平的有效性。以生物稀释为主的额外“清洁”饲喂减少鱼类肌肉组织中137Cs摄入量的放射学效率为2.9±0.4倍。受放射性污染的鱼类肌肉组织中137Cs的生物半衰期为115±25天,食用天然和额外的“清洁”食物的鱼比只食用清洁食物的鱼长约2倍。与137Cs相比,使用额外的“清洁”喂养导致鱼类有机体中90Sr含量与含有大部分锶的鱼骨组织质量的相对增加成比例地增加(高达5倍)。
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引用次数: 9
Reconstruction of high-energy part of the gamma-ray spectrum in thermal neutron capture by 113Cd 113Cd捕获热中子时伽马射线能谱高能部分的重建
IF 0.3 Q4 PHYSICS, NUCLEAR Pub Date : 2021-09-16 DOI: 10.15407/jnpae2021.03.221
V. Plujko, O. Gorbachenko, K. Solodovnyk, V. Petrenko
The average gamma-ray spectrum of 114Cd after thermal neutron capture in 113Cd was evaluated in units of mb/MeV. Two approaches are considered for estimation of the average gamma-ray spectrum with normalization of the experimental data: mean spectra for all gamma-energies were found by averaging frequency polygon for experimental data histogram, and mean spectra were estimated as the combination of theoretical values at low gamma-ray energies and averaging experimental data in high-energy range. The experimental spectra were evaluated from the gamma-intensities presented by Mheemeed et al. [A. Mheemeed et al. Nucl. Phys. A 412 (1984) 113] and Belgya et al. [T. Belgya et al. EPJ Web of Conf. 146 (2017) 05009]. They were normalized to the average theoretical spectrum which was calculated using EMPIRE and TALYS codes. The procedure of normalization of the high-energy part of the spectrum was described. Estimated gamma-spectra for 113Cd(n, {xγ}) reaction induced by thermal neutrons were presented.
在113Cd中捕获热中子后,以mb/MeV为单位计算了114Cd的平均伽马射线能谱。对实验数据进行归一化估计平均伽玛射线能谱,考虑了两种方法:通过对实验数据直方图的频率多边形进行平均求出所有伽玛能量的平均能谱;将低伽玛射线能量的理论值与高能范围内的实验数据进行平均求出平均能谱。实验光谱是根据Mheemeed等人给出的伽马强度来评估的。他需要等人。诊断。理论物理。[A] [A] [b]。比利时等。[j].科学通报,2016,(5):357 - 357。它们被归一化为平均理论谱,这是由EMPIRE和TALYS代码计算得到的。描述了光谱高能部分的归一化过程。给出了热中子诱导113Cd(n, {xγ})反应的估计γ谱。
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引用次数: 1
Erratum to: "Comments on the article: O. M. Povoroznyk, O. K. Gorpinich. Experimental observation of neutron-neutron correlations in nucleus 6He from 3H(α, pα)nn reaction" 对文章的评论:O. M. Povoroznyk, O. K. Gorpinich。3H(α, pα)nn反应中6He核中子-中子相关性的实验观察
IF 0.3 Q4 PHYSICS, NUCLEAR Pub Date : 2021-06-25 DOI: 10.15407/jnpae2021.02.213
B. Struzhko
Original article: Yaderna Fizyka ta Energetyka (Nucl. Phys. At. Energy) 22(1) (2021) 111.
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引用次数: 0
Pre-sowing seeds stimulation by UV-C and X-ray irradiation on the content of antioxidants in inflorescence plants genotypes Matricia chammomila L. 播前UV-C和x射线照射对洋甘菊基因型花序抗氧化剂含量的影响。
IF 0.3 Q4 PHYSICS, NUCLEAR Pub Date : 2021-06-25 DOI: 10.15407/jnpae2021.02.182
V. Zhuk, O. P. Kravets, D. Sokolova, V. Sakada, L. Glushchenko, M. V. Kuchuk
The differences in the dynamics of the flavonoids and phenols content in plants of eight genotypes of matricaria in the control and at presowing UV-C and X-ray irradiation of seeds were studied. Groups of genotypes by the stimulating effect on the content of antioxidants were determined mainly by UV-C irradiation, as well as groups with a significant increase in the content of antioxidants during X-ray irradiation have been identified. A high significant correlation (R = 0.84) between stimulation of flavonoid synthesis by X-ray irradiation and the level of these antioxidants in the control group is shown. Above average (R = 0.64), but insignificant, the correlation is observed between the level of flavonoids in UV-C stimulation and the level of these antioxidants in the control group. No correlation was found between the content of phenols in the control group and the increase of this indicator after irradiation.
研究了8个基因型麻属植物的黄酮类和酚类物质含量在对照和播种前UV-C和x射线照射下的动态变化。主要通过UV-C照射确定了对抗氧化剂含量有刺激作用的基因型组,以及在x射线照射下抗氧化剂含量显著增加的基因型组。x射线照射刺激黄酮类化合物合成与对照组中这些抗氧化剂水平呈高度显著相关(R = 0.84)。在UV-C刺激组中,黄酮类化合物含量与对照组中这些抗氧化剂含量的相关性高于平均水平(R = 0.64),但不显著。对照组的酚类物质含量与辐照后该指标的升高无相关性。
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引用次数: 0
70-th anniversary of Vasyl Ivanovych Slisenko
IF 0.3 Q4 PHYSICS, NUCLEAR Pub Date : 2021-06-25 DOI: 10.15407/jnpae2021.02.214
Kinr Kinr
Brief biography and scientific achievements of Vasyl Ivanovych Slisenko in relation with his 70-th anniversary.
简述瓦西里·伊万诺维奇·斯里申科的生平和科学成就,纪念他70周年。
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引用次数: 0
Physical bases for determination of scattering kernels from incomplete data in grid-less X-ray imaging 无网格x射线成像中不完整数据散射核测定的物理基础
IF 0.3 Q4 PHYSICS, NUCLEAR Pub Date : 2021-06-25 DOI: 10.15407/jnpae2021.02.189
A. Danyk, O. Sudakov
A mathematical model for the determination of X-ray scattering kernels’ shapes based on incomplete simulation or measurement data was introduced and tested using a mathematical phantom. The model is originally intended for low-dose X-ray imaging without anti-scatter grids. The proposed model fits different kinds of symmetrical and asymmetrical scattering kernels in different tissues well enough for practical applications. Kernels asymmetry is mostly caused by irradiation of the object near the boundaries of different tissues. The model describes a variety of asymmetrical kernels by proposed “sectoral” members. Application of the proposed model in scattering compensation procedure reduces resulting error up to 50 % for “wide” scattering kernels.
介绍了一种基于不完全模拟或测量数据确定x射线散射核形状的数学模型,并用数学模型进行了测试。该模型最初用于无抗散射网格的低剂量x射线成像。该模型能较好地拟合不同组织中不同类型的对称和不对称散射核,具有较好的实际应用价值。核不对称主要是由于物体在不同组织边界附近的辐照引起的。该模型通过提议的“部门”成员描述了各种不对称核。将该模型应用于散射补偿过程中,对于“宽”散射核,补偿误差可降低50%。
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引用次数: 0
Effects of genomic instability in populations of Drosophilae melanogaster from regions of Ukraine with different radiation impact factors 不同辐射影响因素对乌克兰地区黑腹果蝇种群基因组不稳定性的影响
IF 0.3 Q4 PHYSICS, NUCLEAR Pub Date : 2021-06-25 DOI: 10.15407/jnpae2021.02.174
A. Kravets, D. Sokolova, N. Kovalchuk
Differences in the gonadal dysgenesis frequency as an indicator of the activation of mobile elements were revealed in F1-descendants of natural populations of Drosophіla melanogaster, selected from regions of different radiation impact. Under conditions of additional low-rate chronic irradiation in laboratory conditions for 10 generations, significant differences in changes in the level and dynamics of this indicator were established depending on the accumulated dose of Drosophila populations from the city of Netishin (Khmelnytskyi NPP) and Magarach city.
在不同辐射影响地区的果蝇自然种群f1后代中,性腺发育异常频率作为活动因子激活的指标存在差异。在实验室条件下附加低速率慢性照射10代的条件下,根据涅季辛市(赫梅利尼茨基核电站)和马加拉赫市果蝇种群的累积剂量,确定了该指标水平和动态变化的显著差异。
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引用次数: 0
期刊
Nuclear Physics and Atomic Energy
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