• 文献检索
  • 文档翻译
  • 深度研究
  • 学术资讯
  • Suppr Zotero 插件Zotero 插件
  • 邀请有礼
  • 套餐&价格
  • 历史记录
应用&插件
Suppr Zotero 插件Zotero 插件浏览器插件Mac 客户端Windows 客户端微信小程序
定价
高级版会员购买积分包购买API积分包
服务
文献检索文档翻译深度研究API 文档MCP 服务
关于我们
关于 Suppr公司介绍联系我们用户协议隐私条款
关注我们

Suppr 超能文献

核心技术专利：CN118964589B侵权必究
粤ICP备2023148730 号-1Suppr @ 2026

文献检索

告别复杂PubMed语法，用中文像聊天一样搜索，搜遍4000万医学文献。AI智能推荐，让科研检索更轻松。

立即免费搜索

文件翻译

保留排版，准确专业，支持PDF/Word/PPT等文件格式，支持 12+语言互译。

免费翻译文档

深度研究

AI帮你快速写综述，25分钟生成高质量综述，智能提取关键信息，辅助科研写作。

立即免费体验

Improving 14N nuclear quadrupole resonance detection of trinitrotoluene using off-resonance effects.

作者信息

Gregorovic Alan, Apih Tomaz

机构信息

Institute Jozef Stefan, Jamova 39, Ljubljana, Slovenia.

出版信息

Solid State Nucl Magn Reson. 2009 Oct;36(2):96-8. doi: 10.1016/j.ssnmr.2009.06.006. Epub 2009 Jun 27.

DOI:10.1016/j.ssnmr.2009.06.006
PMID:19615867
Abstract

The off-resonance dependence of the amplitudes of the six dominant (14)N nuclear quadrupole resonance (NQR) lines in commercial polymorphic trinitrotoluene (TNT) sample were experimentally determined for a wide range of experimental parameters when irradiated with the spin-lock spin-echo (SLSE) pulse sequence. We find that the amplitudes off-resonance dependence follows a sinc-like function with an additional modulation due to the spacing between the RF pulses. This dependence can be very well modeled with expressions we have derived for a single site (14)N NQR in paranitrotoluene (PNT). The results can be immediately used for the reduction of the number of free parameters used in the robust signal processing models for the TNT NQR detectors.

摘要

相似文献

1
Improving 14N nuclear quadrupole resonance detection of trinitrotoluene using off-resonance effects.
Solid State Nucl Magn Reson. 2009 Oct;36(2):96-8. doi: 10.1016/j.ssnmr.2009.06.006. Epub 2009 Jun 27.
2
TNT detection with 14N NQR: multipulse sequences and matched filter.利用¹⁴N核磁共振进行三硝基甲苯检测：多脉冲序列与匹配滤波器
J Magn Reson. 2009 Jun;198(2):215-21. doi: 10.1016/j.jmr.2009.02.011. Epub 2009 Feb 28.
3
Relaxation during spin-lock spin-echo pulse sequence in (14)N nuclear quadrupole resonance.
J Chem Phys. 2008 Dec 7;129(21):214504. doi: 10.1063/1.3023091.
4
WURST-QCPMG sequence and "spin-lock" in ¹⁴N nuclear quadrupole resonance.WURST-QCPMG 序列和 ¹⁴N 核四极共振中的“自旋锁定”。
J Magn Reson. 2013 Aug;233:96-102. doi: 10.1016/j.jmr.2013.05.010. Epub 2013 Jun 4.
5
Off-resonance effects in (14)N NQR signals from the pulsed spin-locking (PSL) and three-pulse echo sequence; a study for monoclinic TNT.
Solid State Nucl Magn Reson. 2015 Oct;71:41-54. doi: 10.1016/j.ssnmr.2015.10.004. Epub 2015 Oct 22.
6
Spin 3/2 Zeeman perturbed NQR in the presence of slow sample rotation.在样品缓慢旋转情况下的自旋3/2塞曼微扰核磁共振。
J Magn Reson. 2006 Sep;182(1):49-54. doi: 10.1016/j.jmr.2006.06.008. Epub 2006 Jun 27.
7
A study of the spin-echo spin-locking effect in multi-pulse sequences in 14N nuclear quadrupole resonance.14N核四极共振中多脉冲序列的自旋回波自旋锁定效应研究。
J Magn Reson. 2005 Dec;177(2):173-83. doi: 10.1016/j.jmr.2005.03.011.
8
Aplicability of TNT "super-Q detection" to multipulse sequences.TNT“超级 Q 检测”在多脉冲序列中的适用性。
J Magn Reson. 2009 Dec;201(2):131-6. doi: 10.1016/j.jmr.2009.08.013. Epub 2009 Sep 6.
9
Nuclear quadrupole resonance single-pulse echoes.核四极共振单脉冲回波
J Magn Reson. 2008 Sep;194(1):1-7. doi: 10.1016/j.jmr.2008.05.020. Epub 2008 May 29.
10
Emission of nuclear quadrupole resonance from polycrystalline hexamethylenetetramine.多晶六亚甲基四胺的核四极共振发射
Solid State Nucl Magn Reson. 2008 Mar;33(3):36-40. doi: 10.1016/j.ssnmr.2008.02.002. Epub 2008 Feb 12.