Interaction of a supersonic NO beam with a static and a resonant RF field: Measurement of rotationally resolved dipole moments

Cáceres, J. O.; Montero, Cristina Roces; Morato, M.; Ureña, A. González

doi:10.1016/j.cplett.2006.06.004

Cited by 6 publications

(4 citation statements)

References 7 publications

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“…The NO + Ar long-range interaction potential can be described by the dipole–induced dipole model potential given by V int = prefix− μ NO 2 · α Ar R 6 where μ NO , α Ar , and R stand for the NO permanent dipole moment, the Argon atomic polarizability, and the interparticle distance, respectively. Using the literature values for μ NO = 0.158 D − and α Ar = 1.63 Å, eq predicts that a NO molecule will “feel” an interaction potential of 12.2 kHz when the Ar approaches exactly at a distance of R d = 28.03 Å 2 .…”

Section: Resultsmentioning

confidence: 99%

Decoherence Cross-Section in NO + Ar Collisions: Experimental Results and a Simple Model

et al. 2013

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Quantum decoherence can be viewed as the mechanism responsible for the quantum-to-classical transition as the initially prepared quantum state interacts with its environment in an irreversible manner. One of the most common mechanisms responsible for the macroscopically observed decoherence involves collisions of an atom or molecule, initially prepared in a coherent superposition of states, with gas particles. In this work, a coherent superposition of quantum internal states of NO molecules is prepared by the interaction between the molecule with both a static and a radiofrequency electric field. Subsequently, NO + Ar collision decoherence experiments are investigated by measuring the loss of coherence as a function of the number of collisions. Data analysis using a model based on the interaction potential of the collisional partners allowed to unravel the molecular mechanism responsible for the loss of coherence in the prepared NO quantum superposition of internal states. The relevance of the present work relies on several aspects. On the one hand, the use of radio-waves introduces a new way for the production of coherent beams. On the other hand, the employed methodology could be useful in investigating the Stereodynamics of chemical reactions with coherent reagents.

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Section: Resultsmentioning

confidence: 99%

Decoherence Cross-Section in NO + Ar Collisions: Experimental Results and a Simple Model

et al. 2013

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“…The interaction of a beam of polar molecules with oscillating rf electric fields is a subject currently investigated by our group using different experimental methodologies. − Thus depletion spectra of molecular beams were reported when NO molecules interact with static and resonant rf fields. − Later on, beam splitting of ±0.2° toward both positive and negative directions perpendicular to the beam propagation axis of a supersonic NO beam seeded in He was reported as a result of its resonant interaction with an rf electric field. More recently, − the observed beam depletion and splitting were rationalized, from a theoretical point of view, using a quantum interference model that seems to capture the main physics behind all reported observations.…”

Section: Introductionmentioning

confidence: 99%

Nitric Oxide Beam Intensity Oscillations Induced by the Combined Action of a Static and a Radio Frequency Electric Field

2010

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This paper details an experimental and theoretical investigation in which a simplified version of the molecular beam electric resonance technique is employed that requires the use of a C-field only. In the experiment the forward intensity of a NO beam is measured as a function of the frequency of the oscillating electric field over the 900-1460 kHz range. Specifically, the interaction of the NO beam with a radio frequency (rf) field of 1.12 kV/m amplitude and -610 kV/m (2) of gradient at the horizontal plane during 72 micros produces a series of oscillations in the transmitted beam intensity. The theoretical analysis shows how the interaction between a beam of NO molecules and both a static and oscillating rf field produces interferences in the forward beam intensity and how the observed interferences are due to superposition of molecular internal states. Furthermore, the interference model reproduces satisfactorily the observed beam intensity oscillations. The present technique could be useful for the development of new schemes to achieve coherent control of molecular processes using radiowaves.

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“…The interaction of polar molecules with resonant RF electric fields is a subject currently investigated by our group using different experimental methodologies. − Thus, depletion spectra of molecular beams have been reported when such polar molecules interact with static and resonant RF fields. − More recently, beam splitting of 1.5 mm toward both the positive and negative direction perpendicular to the beam propagation axis of a supersonic toluene beam seeded in He was reported as a result of its resonant interaction with a RF electric field. The observed toluene beam splitting could be explained by the onset of molecular interferences induced by the resonant RF field…”

Section: Introductionmentioning

confidence: 99%

Interferences in the Transverse Profile of a Toluene Beam Induced by a Resonant RF Electric Field

et al. 2009

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In this work, the interaction of a supersonic beam of toluene diluted in He with a resonant oscillating RF field is investigated both experimental and theoretically. It is shown how the resonant field induces a peak structure in the transverse beam profile which can be explained by the onset of molecular interferences. Specifically, the interaction of a toluene beam of 0.12 eV of translational energy with a resonant RF field of 1.12 kV/m amplitude, and -610 kV/m(2) of gradient at the horizontal plane, during 160 micros produces a series of maxima in the transverse beam profile. The observed structure was satisfactorily reproduced by a quantum interference model based on the interaction of two coherent superpositions induced by the resonant RF field. It appears the present experimental technique could be useful to investigate the spectroscopy and dynamical behavior of coherent beams of polar molecules.

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Interaction of a supersonic NO beam with a static and a resonant RF field: Measurement of rotationally resolved dipole moments

Cited by 6 publications

References 7 publications

Decoherence Cross-Section in NO + Ar Collisions: Experimental Results and a Simple Model

Decoherence Cross-Section in NO + Ar Collisions: Experimental Results and a Simple Model

Nitric Oxide Beam Intensity Oscillations Induced by the Combined Action of a Static and a Radio Frequency Electric Field

Interferences in the Transverse Profile of a Toluene Beam Induced by a Resonant RF Electric Field

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