Metallic and composite micropoint cathodes : aging effect and electronic and spatial characteristics
المؤلفون المشاركون
Musa, M. S.
Fischer, A.
Musa, K. O.
المصدر
العدد
المجلد 5، العدد 1 (30 إبريل/نيسان 2012)، ص ص. 21-26، 6ص.
الناشر
جامعة اليرموك عمادة البحث العلمي و الدراسات العليا
تاريخ النشر
2012-04-30
دولة النشر
الأردن
عدد الصفحات
6
التخصصات الرئيسية
الملخص EN
Composite micro-emitters consisting of a tungsten core coated with different dielectric materials were prepared.
Various properties of these emitters were measured, including the current-voltage (IV) characteristics and spatial current distributions.
We compared coated and uncoated tips and determined differences between both types.
It could be proven that coated emitters are superior to uncoated ones in terms of the current stability and the emission current obtained for the same applied voltages.
After these samples have been stored under atmospheric conditions for a period of 10 to 20 years from the first time being characterized, they were tested again.
The IV characteristics and spatial current distributions in addition to stability measurements were recorded.
Various similarities as well as some differences compared to the initial characterization have been found.
It is interesting to note that after one and a half decades these composite emitters are still functioning effectively without being subjected to field desorption processes.
The dielectric layers built on the tungsten cores were still in shape and stable.
Some theoretical analysis of the tip properties and their change during storage time is included.
Particular attention is paid to the deviations from the ideal Fowler-Nordheim (FN) behavior as well as the related slope and intercepts correction factors.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Musa, M. S.& Fischer, A.& Musa, K. O.. 2012. Metallic and composite micropoint cathodes : aging effect and electronic and spatial characteristics. Jordan Journal of Physics،Vol. 5, no. 1, pp.21-26.
https://search.emarefa.net/detail/BIM-305022
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Musa, M. S.…[et al.]. Metallic and composite micropoint cathodes : aging effect and electronic and spatial characteristics. Jordan Journal of Physics Vol. 5, no. 1 (2012), pp.21-26.
https://search.emarefa.net/detail/BIM-305022
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Musa, M. S.& Fischer, A.& Musa, K. O.. Metallic and composite micropoint cathodes : aging effect and electronic and spatial characteristics. Jordan Journal of Physics. 2012. Vol. 5, no. 1, pp.21-26.
https://search.emarefa.net/detail/BIM-305022
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references : p. 26
رقم السجل
BIM-305022
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر