Makale detayı · 2023
Detection of Nitrogen Substances by Nuclear Quadrupole Resonance in Large Volumes
Dergi
IEEEISSN 2831-5804
- Yıl
- 2023
- Tür
- conference-paper
Veri kaynağı ayrımı
- YÖKSİS YÖKSİS makale kaydı
- YÖKSİS dergi adı IEEE
- OpenAlex OpenAlex zenginleştirmesi (özet, atıf, konular)
Özet
İngilizce (OpenAlex)
In this work, we describe the design of a sensing system for the NQR detection of nitrogen substances in a large inspection volume. The system consists of a Tecmag Scout NQR console, Tomco linear amplifier (4kW), a large distance/volume RF probe (either planar gradiometer or toroidal coil), a duplexer and a high-power Q-factor spoiler. We studied the conditions for optimal unilateral detection at distances up to 20 cm as well as for the detection inside a large volume. It has been shown that depending on RF probe configuration and ambient RF noise level), a$14_\mathrm{N}$NQR signal of a small amount (100 g) of hexamethylenetetramine (HMT) as the reference nitrogen substance can be detected using both types of RF detectors. Furthermore, a possibility of NQR detection for a partially shielded HMT sample has been also shown. The influence of conducting bodies near an NQR sample for detection performance has been studied as well. We have also demonstrated that this system can be applied to the detection of ammonium nitrate.
Konular
- Solid-state spectroscopy and crystallography
- Advanced Chemical Sensor Technologies
- Advanced NMR Techniques and Applications
Birincil konu Solid-state spectroscopy and crystallography