Changes in morphology and field emission property of nano-tendril bundles after high temperature annealing
Changes in morphology and field emission property of nano-tendril bundles after high temperature annealing
复制标题
高温退火后纳米卷须束形貌及场发射性能的变化
DOI：
10.1016/j.nme.2022.101178
复制
发表时间：
2022
影响因子：
2.6
通讯作者：
Ohno Noriyasu
中科院分区：
文献类型：
--
作者：
Zhang Rongshi;Kajita Shin;Hwangbo Dogyun;Sinelnikov Dmitry;Tanaka Hirohiko;Ohno Noriyasu
已知的纳米卷须束(NTB)是通过氦等离子体暴露在钨表面上而形成的。在本研究中，我们在1473-1673℃的样品温度范围内进行了退火实验，以研究NTBS的形貌和场发射性能的变化。当NTBS在W表面形成时，表面没有完全恢复到光滑的表面，在1673K下热处理1h后，NTBS仍保持纤维状结构。此外，退火后，NTBS的场发射起始电场增大，发射电流显著降低。在氦等离子体暴露过程中，当样品被偏置到−250V时，NTBS在W表面上确认了引弧，而在退火态NTBS上，W表面没有出现引弧。
Nano-tendril bundles (NTBs) are known to be formed on tungsten by helium plasma exposure with additional neon impurity gas. In this study, the annealing experiments were conducted at the sample temperature of 1473 – 1673 K to investigate the changes of morphology and field emission property of NTBs. With NTBs formed on a W surface, the surface did not fully recover to a smoothed surface and the NTBs remained the fiber-form structures after the annealing at 1673 K for one hour. In addition, the onset electric field for field emission increased, while the emission current from NTBs significantly decreased after the annealing. When the samples were biased at −250 V during helium plasma exposure, arc ignition was confirmed on W surface with NTBs, whereas no arc ignition appeared on W with annealed NTBs.
WEST 托卡马克面向钨等离子体的组件的发射率测量
影响因子：
1.7
作者：
J. Gaspar;C. Pocheau;Y. Corre;N. Ehret;D. Guilhem;M. Houry;T. Loarer;T. Loewenhoff;C. Martin;C. Pardanaud;G. Pintsuk;M. Richou;F. Rigollet;H. Roche;G. Sepulcre;M. Wirtz
通讯作者：
M. Wirtz
等离子体相关电场下纳米卷须束的行为
影响因子：
4
作者：
Kulagin V.V.;Sinelnikov D.N.;Bulgadaryan D.G.;Efimov N.E.;Kurnaev V.A.;Hwangbo D.;Ohno N.;Kajita S.
通讯作者：
Kajita S.
退火过程中纳米结构钨上氦气泡破裂的原位 TEM 观察
影响因子：
0.8
作者：
M. Yajima;N. Yoshida;S. Kajita;N. Ohno
通讯作者：
N. Ohno