Simultaneous π / 2 rotation of two spin species of different gyromagnetic ratios

Journal Article · Fri Jun 05 00:00:00 EDT 2015 · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

DOI:https://doi.org/10.1016/j.nima.2015.05.062· OSTI ID:1247146

Chu, Ping -Han  ^[1]; Peng, Jen -Chieh ^[2]

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1. Duke Univ., Durham, NC (United States); Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States)
2. Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States)

Here, we examine the characteristics of the π/2 pulse for simultaneously rotating two spin species of different gyromagnetic ratios with the same sign. For a π/2 pulse using a rotating magnetic field, we derive an equation relating the frequency and strength of the pulse to the gyromagnetic ratios of the two particles and the strength of the constant holding field. For a π/2 pulse using a linear oscillatory magnetic field, we obtain the solutions numerically, and compare them with the solutions for the rotating π/2 pulse. Application of this analysis to the specific case of rotating neutrons and ³He atoms simultaneously with a π/2 pulse, proposed for a neutron electric dipole moment experiment, is also presented.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• Grant/Contract Number: AC52-06NA25396
• OSTI ID: 1247146
• Alternate ID(s): OSTI ID: 1247264
• Report Number(s): LA-UR-15-20779; PII: S0168900215007214
• Journal Information: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 795, Issue C; ISSN 0168-9002
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
π/2 rotation
neutron electric dipole moment
magnetic resonance