scholarly journals Effects of Liquid Helium Bubble Formation in a Superconducting Cavity Cryogenic System

2011 ◽  
Author(s):  
Chang X. ◽  
E. Wang ◽  
T. Xin
Keyword(s):  
Liquid Helium ◽  
Bubble Formation ◽  
Cryogenic System ◽  
Helium Bubble ◽  
Superconducting Cavity

2 K cryogenic system development for superconducting cavity testing of CiADS

Cryogenics ◽  
2021 ◽  
Vol 115 ◽  
pp. 103247
Author(s):  
Niu Xiao-fei ◽  
Bai Feng ◽  
Wang Xian-jin ◽  
Zhang Peng ◽  
Yang Yong-hui ◽  
...  
Keyword(s):  
System Development ◽  
Cryogenic System ◽  
Superconducting Cavity

Microstructure of HIPed and SPSed 9Cr-ODS steel and its effect on helium bubble formation

2016 ◽  
Vol 474 ◽  
pp. 65-75 ◽  
Author(s):  
Chenyang Lu ◽  
Zheng Lu ◽  
Rui Xie ◽  
Chunming Liu ◽  
Lumin Wang
Keyword(s):  
Bubble Formation ◽  
Helium Bubble ◽  
Ods Steel

scholarly journals Helium bubble formation in ultrafine and nanocrystalline tungsten under different extreme conditions

2015 ◽  
Vol 458 ◽  
pp. 216-223 ◽  
Author(s):  
O. El-Atwani ◽  
K. Hattar ◽  
J.A. Hinks ◽  
G. Greaves ◽  
S.S. Harilal ◽  
...  
Keyword(s):  
Bubble Formation ◽  
Extreme Conditions ◽  
Helium Bubble

scholarly journals In-Situ Helium Implantation and TEM Investigation of Radiation Tolerance to Helium Bubble Damage in Equiaxed Nanocrystalline Tungsten and Ultrafine Tungsten-TiC Alloy

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 794 ◽  
Author(s):  
Osman El Atwani ◽  
Kaan Unal ◽  
William Streit Cunningham ◽  
Saryu Fensin ◽  
Jonathan Hinks ◽  
...  
Keyword(s):  
Damage Evolution ◽  
Bubble Formation ◽  
Coarse Grained ◽  
Irradiation Damage ◽  
Radiation Tolerance ◽  
Helium Bubble ◽  
Average Grain Size ◽  
Order Of Magnitude ◽  
Helium Implantation

The use of ultrafine and nanocrystalline materials is a proposed pathway to mitigate irradiation damage in nuclear fusion components. Here, we examine the radiation tolerance of helium bubble formation in 85 nm (average grain size) nanocrystalline-equiaxed-grained tungsten and an ultrafine tungsten-TiC alloy under extreme low energy helium implantation at 1223 K via in-situ transmission electron microscope (TEM). Helium bubble damage evolution in terms of number density, size, and total volume contribution to grain matrices has been determined as a function of He+ implantation fluence. The outputs were compared to previously published results on severe plastically deformed (SPD) tungsten implanted under the same conditions. Large helium bubbles were formed on the grain boundaries and helium bubble damage evolution profiles are shown to differ among the different materials with less overall damage in the nanocrystalline tungsten. Compared to previous works, the results in this work indicate that the nanocrystalline tungsten should possess a fuzz formation threshold more than one order of magnitude higher than coarse-grained tungsten.

Comparison of helium bubble formation in F82H, ODS, SIMP and T91 steels irradiated by Fe and He ions simultaneously

2020 ◽  
Author(s):  
Bingsheng Li ◽  
Zhen Yang ◽  
Shuai Xu ◽  
Kongfang Wei ◽  
Zhiguang Wang ◽  
...  
Keyword(s):  
Bubble Formation ◽  
Helium Bubble
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