Design of a radio-frequency transceiver coil for landmine detection in Colombia by nuclear quadrupole resonance.
Heliyon
; 6(1): e03242, 2020 Jan.
Article
em En
| MEDLINE
| ID: mdl-32042973
This paper shows the design of a radio-frequency transceiver coil for landmine detection in Colombia by nuclear quadrupole resonance (NQR). The radio-frequency transceiver coil is of great importance as it is responsible for exciting the target explosive and for picking up the weak NQR signal; however, little detail is found on the literature about its design. The strategy followed on this work consisted on constructing and experimentally comparing five different radio-frequency transceiver coils, whose dimensions were selected according to four design parameters: noise rejection, magnetic flux density, coil sensitivity, and quality factor; taking into account the characteristics of landmines in Colombia, the second country most affected by anti-personnel mines in the world. The constructed coils were experimentally compared using a portable system and with three of them, the system was capable of detecting 200 g ammonium nitrate (the main substance used in Colombian landmines) up to 3 cm from the coil within 12 s, with a steady-state free precession pulse sequence. Conclusions from this work could help to guide RF coil design in other works that apply NQR for remote detection of substances in non-shielded environments and to direct future research about landmine detection in Colombia.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Diagnostic_studies
País/Região como assunto:
America do sul
/
Colombia
Idioma:
En
Revista:
Heliyon
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Colômbia
País de publicação:
Reino Unido