The effect of fission products Xe and Cs on the thermal conductivity of the U3Si2 lattice: a first-principles study

热导率 裂变产物 核燃料 裂变 硅化物 核裂变产物 格子(音乐) 玻尔兹曼方程 热的 材料科学 热力学 原子物理学 化学 放射化学 分析化学(期刊) 核物理学 核化学 物理 中子 冶金 色谱法 声学
作者
Hangbo Qi,Buda Li,Menglu Li,S. M. Feng,Jutao Hu,Hengfeng Gong,Qisen Ren,Yehong Liao,Haiyan Xiao,Xiaotao Zu
出处
期刊:Journal of Physics: Condensed Matter [IOP Publishing]
卷期号:35 (49): 495701-495701 被引量:1
标识
DOI:10.1088/1361-648x/acf63a
摘要

In the past decades, uranium silicide (U3Si2) as a promising accident tolerant fuel (ATF) has drawn considerable attention in the field of nuclear physics. In comparison with traditional nuclear fuel (UO2), the U3Si2has higher thermal conductivity and uranium density, thereby resulting in lower centerline temperatures and better fuel economy. However, during the nuclear fission reaction, some unexpected fission products, such as Xe and Cs, are released and form the defective states. In this study, we explore the influence of Xe and Cs on the thermal conductivity of the U3Si2lattice from 200 to 1500 K using density functional theory calculations combined with Boltzmann transport equation. Our results reveal that the lattice and electronic thermal conductivities of defective U3Si2are reduced at a constant temperature, as compared with that of ideal system, thus resulting in a decrease of the total thermal conductivity. In the case of Cs occupation at U1 site, the total thermal conductivity (4.42 W mK-1) is decreased by ∼56% at 300 K, as compared with the value of 9.99 W mK-1for ideal system. With U1 and Si sites being occupied by Xe, the total thermal conductivities (4.45 and 6.52 W mK-1) are decreased by ∼55% and 35% at 300 K, respectively. The presented results suggest that the U3Si2has potential as a promising ATF at high temperatures.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
微笑铅笔发布了新的文献求助10
刚刚
李晨源发布了新的文献求助30
刚刚
乐乐应助zho采纳,获得10
1秒前
NexusExplorer应助zho采纳,获得10
1秒前
方赫然应助zho采纳,获得10
1秒前
我是老大应助zho采纳,获得10
1秒前
1秒前
情怀应助zho采纳,获得10
1秒前
爆米花应助zho采纳,获得10
1秒前
大模型应助zho采纳,获得10
1秒前
爆米花应助zho采纳,获得10
1秒前
威武花瓣应助zho采纳,获得10
1秒前
英俊的铭应助zho采纳,获得10
1秒前
清爽的火车完成签到 ,获得积分10
2秒前
3秒前
4秒前
EM发布了新的文献求助10
4秒前
5秒前
鸣蜩阿六发布了新的文献求助10
5秒前
5秒前
5秒前
5秒前
6秒前
顾矜应助社会五好青年采纳,获得10
6秒前
脑洞疼应助LLC采纳,获得10
7秒前
JamesPei应助zho采纳,获得10
7秒前
科研通AI2S应助zho采纳,获得10
7秒前
CipherSage应助zho采纳,获得10
7秒前
良辰应助zho采纳,获得10
7秒前
思源应助zho采纳,获得10
7秒前
科研通AI2S应助zho采纳,获得10
7秒前
不配.应助zho采纳,获得30
7秒前
cctv18应助zho采纳,获得10
7秒前
wanci应助zho采纳,获得10
7秒前
CD56应助zho采纳,获得20
7秒前
万能图书馆应助nickthename采纳,获得10
7秒前
zfy发布了新的文献求助10
8秒前
8秒前
龙锐敏发布了新的文献求助10
8秒前
八九发布了新的文献求助10
9秒前
高分求助中
The late Devonian Standard Conodont Zonation 2000
Nickel superalloy market size, share, growth, trends, and forecast 2023-2030 2000
The Lali Section: An Excellent Reference Section for Upper - Devonian in South China 1500
Smart but Scattered: The Revolutionary Executive Skills Approach to Helping Kids Reach Their Potential (第二版) 1000
Very-high-order BVD Schemes Using β-variable THINC Method 830
Mantiden: Faszinierende Lauerjäger Faszinierende Lauerjäger 800
PraxisRatgeber: Mantiden: Faszinierende Lauerjäger 800
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3247867
求助须知:如何正确求助?哪些是违规求助? 2891062
关于积分的说明 8266031
捐赠科研通 2559319
什么是DOI,文献DOI怎么找? 1388095
科研通“疑难数据库(出版商)”最低求助积分说明 650694
邀请新用户注册赠送积分活动 627581