INVESTIGADORES
OSAN Tristan Martin
artículos
Título:
Pulsed 14N NQR Device Designed to Detect Substances in the Presence of Environmental Noise
Autor/es:
GERÓNIMO E POLETTO; TRISTÁN MARTÍN OSÁN; DANIEL J PUSIOL
Revista:
HYPERFINE INTERACTIONS
Editorial:
Springer
Referencias:
Lugar: The Netherlands; Año: 2005 vol. 159 p. 127 - 130
ISSN:
0304-3843
Resumen:
A new device designed for both volumetric and surface NQR detection of substancesspatially located in several positions, and in the presence of environmental interference, isdescribed. The device consists of two probe coils, placed on the same detection plane, forexcitation and detection of NQR signals. Experimental results obtained using Strong OffResonance Comb (SORC) pulse sequences, for the excitation of the n_ transition in samples ofSodium Nitrite (NaNO2), are presented. It is shown that, when the total signals induced in each coil are properly combined, the interference commonly detected in both coils is attenuated relative to the NQR signal detected by either one or both probe coils. NQR signal can be detected by either one or both coils, but in both cases the noise induced by distant environmental sources is attenuated.
