دورية أكاديمية
(14)N NQR, relaxation and molecular dynamics of the explosive TNT.
| العنوان: | (14)N NQR, relaxation and molecular dynamics of the explosive TNT. |
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| المؤلفون: | Smith JA; Department of Informatics, King's College London, Strand, London WC2R 2LS, UK., Rowe MD; Department of Informatics, King's College London, Strand, London WC2R 2LS, UK. Electronic address: michael.d.rowe@kcl.ac.uk., Althoefer K; Department of Informatics, King's College London, Strand, London WC2R 2LS, UK. Electronic address: k.althoefer@kcl.ac.uk., Peirson NF; Angel House, Marsh Lane, Saundby, Retford DN22 9ES, UK. Electronic address: nqr2004@yahoo.co.uk., Barras J; Department of Informatics, King's College London, Strand, London WC2R 2LS, UK. Electronic address: jamie.barras@kcl.ac.uk. |
| المصدر: | Solid state nuclear magnetic resonance [Solid State Nucl Magn Reson] 2015 Oct; Vol. 71, pp. 61-6. Date of Electronic Publication: 2015 Sep 28. |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: Elsevier Country of Publication: Netherlands NLM ID: 9306181 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1527-3326 (Electronic) Linking ISSN: 09262040 NLM ISO Abbreviation: Solid State Nucl Magn Reson Subsets: PubMed not MEDLINE |
| أسماء مطبوعة: | Original Publication: Amsterdam ; New York : Elsevier, c1992- |
| مستخلص: | Multiple pulse sequences are widely used for signal enhancement in NQR detection applications. Since the various (14)N NQR relaxation times, signal decay times and frequency of each NQR line have a major influence on detection sequence performance, it is important to characterise these parameters and their temperature variation, as fully as possible. In this paper we discuss such measurements for a number of the ν+ and ν- NQR lines of monoclinic and orthorhombic TNT and relate the temperature variation results to molecular dynamics. The temperature variation of the (14)N spin-lattice relaxation times T1 is interpreted as due to hindered rotation of the NO2 group about the C-NO2 bond with an activation energy of 89 kJ mol(-1) for the ortho and para groups of monoclinic TNT and 70 kJ mol(-1) for the para group of orthorhombic TNT. (Copyright © 2015 Elsevier Inc. All rights reserved.) |
| فهرسة مساهمة: | Keywords: (14)N NQR; NQR parameters; NQR relaxation times; Pulsed spin-locking (PSL) sequence; TNT detection; Temperature variation |
| تواريخ الأحداث: | Date Created: 20151007 Date Completed: 20160316 Latest Revision: 20151120 |
| رمز التحديث: | 20221213 |
| DOI: | 10.1016/j.ssnmr.2015.09.009 |
| PMID: | 26440130 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1527-3326 |
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| DOI: | 10.1016/j.ssnmr.2015.09.009 |