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gp601

木虫 (正式写手)

[交流] 【请教】请问场发射环境扫描电子显微镜的原理?

与发射扫描电子显微镜有什么区别?还有能介绍本书看下吗?谢谢

[ Last edited by FLY_Phoenix on 2008-6-12 at 12:17 ]
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天行健,君子以自强不息!
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temedx

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★ ★
FLY_Phoenix(金币+2,VIP+0):谢谢热心帮助,欢迎常来
环境扫描,顾名思义,也就是可以在接近正常环境的情况下观察形貌,也就是说,真空可以比较差,这个是FEI公司的一个专利名称,你可以找FEI的网站看一下他们的产品介绍。
环境扫描可以在样品表面存在水滴的情况下观察图像,是各大公司低真空系列产品中比较优秀的一种,但是毕竟低真空对于电子束的稳定性有影响,所以,在环境扫描模式下,其分辨率比起高真空模式要差,不过环扫也有高真空模式,可以互相切换。
Everybodyissobusymindingotherppl'sbusiness,thattheyforgettofindtheirownhappiness.
2楼2008-06-12 10:27:38
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zhangliflying

木虫 (著名写手)

场发射,高分辨率

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FLY_Phoenix(金币+2,VIP+0):謝謝熱心幫助^_^
???l????????t???u???z???????|???z?????????e??? 10 - 100 ??????r?????????уH?? 0.2 - 0.3 eV???????????????????????????@??R????????l???????????????????_ 1nm ?????

10. ???l???????????????N:????l???(cold field emission , FE)??????l???(thermal field emission ,TF)????????l???(Schottky emission ,SE)

11. ????????е??????????108V/cm??С???????????r?????п??^?????????l??????????^????????l??????????????????λ??K?a??SchottkyЧ???????????????????????????????????"????"??^??M??????K?x?_?O?????l?????S?????J???O??????l????????????O??????????????????????????????_?????x???????????????????????

12. ???l?????????x????O?????????????????????????????????T???O?????Cе???????u??????????????^????O????????l?????????????M?O???a?????????????????????????????????O?????????????a?????o??????????a?????Ч??????????????????????O?????(??)?O??????????l????????(extraction voltage)???????????l????????????????(??)?O?????Q??????????????????????????????????

13. ???O?????u????l?????????????????????Q???o?κ???????????????????????棬?????????????????????????????????????l????????l?????????豣????????????????u?O??????e??????????????O??r??O??????????????????????????SEM????t?^???????l????????

14. ????l?????????c????????????С?????????????????????????????????С????????????????????Ч?????????????????w??????????????l????????K??l?????????????????l?????????????10-10 torr??????????????m??????????????r??????????2500K(???^?????flashing)?????????????????w?????????????c??l?????????С??

15. ????l?????????1800K?????????????????????w??????????????棬???????????flashing????????????S???^???l?????????????K?????^?????????(10-9 torr)???????m??????c???????????????????????хs???????3~5?????????????^??????^??????á?

16. ????l????????????1800K?????S???u(100)?ξ????ZrO???w???ZrO????????????u??4.5eV????2.8eV??????????????λ???????????????????????????????^????(?K?????Ч??)?????????棬????????s10-8~10-9torr????l?????????????????l????????????????????????С???H???d?????l????????????????????????????????????????????l????????c??
3楼2008-06-12 12:46:56
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gp601

木虫 (正式写手)

还有知道的吗?有书籍具体介绍吗?
天行健,君子以自强不息!
4楼2008-06-12 17:36:27
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temedx

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具体介绍可以看清华大学出版社,章晓中教授的《电子显微分析》,第七章第七节,196页。
Everybodyissobusymindingotherppl'sbusiness,thattheyforgettofindtheirownhappiness.
5楼2008-06-13 13:26:01
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