53Cr, 17O and 14N nuclear quadrupole resonance in ammonium dichromate

• Published in: Hyperfine interactions Vol. 237; no. 1; pp. 1 - 8
• Main Authors: Stephenson, David, Singh, Nadia
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 2016; Springer Nature B.V
• Subjects: 3-8 July 2016; Asymmetry; Atomic; Belgium; Chromates; Condensed Matter Physics; Hadrons; Heavy Ions; Leuven; Molecular; Nuclear Physics; Nuclear quadrupole resonance; Optical and Plasma Physics; Physics; Physics and Astronomy; Proceedings of the International Conference on Hyperfine Interactions and their Applications (HYPERFINE 2016); Quadrupoles; Surfaces and Interfaces; Thin Films; Ammonium dichromate; NQR; N; O; Cr
• ISSN: 0304-3843; 1572-9540
• DOI: 10.1007/s10751-016-1332-3

The 53 Cr resonance frequency in ammonium dichromate has been detected at 4202 kHz giving a Qcc of 8404 kHz (assuming η = 0). Calculations suggest that the value of the 53 Cr quadrupole moment is about 84 mB lower that the currently accepted value. The resonance frequencies of two 17 O nuclei have also been detected giving Qcc = 2800, 2890 kHz and η = 0.726, 0.780 respectively. The value for coupling and asymmetry parameter for 14 N has been refined using zero field NQR giving a value Qcc = 78.8 kHz and η = 0.645 the asymmetry value being considerably lower than the value previous reported.