原子能科学技术
原子能科學技術
원자능과학기술
ATOMIC ENERGY SCIENCE AND TECHNOLOGY
2014年
10期
1895-1898
,共4页
中子管%负氢离子%永磁钢%PIG负离子源
中子管%負氫離子%永磁鋼%PIG負離子源
중자관%부경리자%영자강%PIG부리자원
neutron tube%negative hydrogen ion%permanent magnet%PIG negative ion source
PIG离子源用于中子管引出正离子，但在使用过程中存在一定问题，如单原子离子比低、靶材料溅射严重及功耗大等。为解决这些问题，提高中子管的寿命和稳定性，本文设计一种中子管用PIG负氢离子源，并对其束流引出进行实验研究。分别测量了离子源的磁场、不同阴极材料及引出阴极离子发射孔径对引出负氢离子束流的影响。实验数据表明，该负氢离子源可用于制作性能指标良好的中子管。
PIG離子源用于中子管引齣正離子，但在使用過程中存在一定問題，如單原子離子比低、靶材料濺射嚴重及功耗大等。為解決這些問題，提高中子管的壽命和穩定性，本文設計一種中子管用PIG負氫離子源，併對其束流引齣進行實驗研究。分彆測量瞭離子源的磁場、不同陰極材料及引齣陰極離子髮射孔徑對引齣負氫離子束流的影響。實驗數據錶明，該負氫離子源可用于製作性能指標良好的中子管。
PIG리자원용우중자관인출정리자，단재사용과정중존재일정문제，여단원자리자비저、파재료천사엄중급공모대등。위해결저사문제，제고중자관적수명화은정성，본문설계일충중자관용PIG부경리자원，병대기속류인출진행실험연구。분별측량료리자원적자장、불동음겁재료급인출음겁리자발사공경대인출부경리자속류적영향。실험수거표명，해부경리자원가용우제작성능지표량호적중자관。
A PIG ion source ,originally designed for positive ion generation to neutron tube ,has basic limitations ,such as low monatomic ion fraction ,serious sputtering of the target surface and large power consumption .In order to solve these defects and improve the lifetime and stability of neutron tube ,a PIG ion source was modified for negative hydrogen ions extraction . A new structure of ion source was designed for neutron tube , and experiments about beam current extraction from PIG negative hydrogen ion source were performed .The effects of magnetic field of the ion source , different cathode materials and the aperture size of extraction cathode on hydrogen ions extraction were studied , respectively . The experiment data demonstrate that the negative hydrogen ion source can be used to produce the neutron tube with the good per-formance .
