کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5406475 | 1393176 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Aplicability of TNT “super-Q detection” to multipulse sequences
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Aplicability of TNT “super-Q detection” to multipulse sequences Aplicability of TNT “super-Q detection” to multipulse sequences](/preview/png/5406475.png)
چکیده انگلیسی
The use of high-Q probes to increase the sensitivity in NMR and NQR is a well-known technique, however very high Q values are associated with several limitations. This paper explores the 14N NQR multipulse detection of trinitrotoluene (TNT) signal-to-noise ratio as a function of the pickup coil Q factor, with a particular emphasis on the “super-Q” regime, where probe bandwidth becomes narrower than the NQR linewidths. We have used a mixed experimental-theoretical approach to find the TNT Q-dependent signal-to-noise value which avoided the inconvenient construction of a probe at every Q. The process has been repeated for a range of excitation/detection frequencies and a 2D sensitivity map was obtained. Our analysis suggests, that sensitivity is maximum and practically Q-independent when 400
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetic Resonance - Volume 201, Issue 2, December 2009, Pages 131-136
Journal: Journal of Magnetic Resonance - Volume 201, Issue 2, December 2009, Pages 131-136
نویسندگان
Alan GregoroviÄ, Tomaž Apih,