High frequency modulation of monoenergetic neutrons with a quartz piezoelectric crystal

Moyer, M.; Parkinson, T.F.

doi:10.1016/0029-554x(67)91369-9

Cited by 28 publications

(6 citation statements)

References 2 publications

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“…The quartz bar was vibrating longitudinally with the fundamental resonance frequency of 34.785 kHz. The obtained results are considerably different from those in [2]. Fig.…”

Section: Resultscontrasting

confidence: 75%

Neutron diffraction on piezoelectric vibrating bars

Galociová

Tichý²,

Zelenka³

et al. 1970

Phys. Stat. Sol. (a)

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The diffraction of monoenergetic neutrons by vibrating bars from natural and synthetic quartz was investigated in dependence on the exciting high‐frequency current flowing through the sample, on the mode of vibrations and their frequency, on the reflection order, on the wavelength of neutrons, and on the lattice distortions. An attempt to interpret the experimental results in view of the dynamical theory of diffraction is presented.

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“…The quartz bar was vibrating longitudinally with the fundamental resonance frequency of 34.785 kHz. The obtained results are considerably different from those in [2]. Fig.…”

Section: Resultscontrasting

confidence: 75%

Neutron diffraction on piezoelectric vibrating bars

Galociová

Tichý²,

Zelenka³

et al. 1970

Phys. Stat. Sol. (a)

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“…By applying the electric field with its intensity E, the Bragg angle eB in (5) changes to the angle 0; according to (4). Due to this fact the Gauss distribution (5) takes the form which is the product of three factors.…”

Section: (4)mentioning

confidence: 99%

Effect of static electric field on neutron diffraction by lattice planes of KH2PO4

Sedláková

Petržı́lka

Mikula

et al. 1975

Phys. Stat. Sol. (a)

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By means of a triple axis crystal spectrometer for slow neutrons the rocking curves of two nearly perfect single crystals of KH2PO4 in the double crystal (4, –4) setting were measured. The application of a static electric field parallel to the crystallographic Z'‐axis causes an increase in the intensity of the neutron beam diffracted by the lattice plane (440) and a shift of the rocking curve to the right or to the left according to the electric field sence.

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“…The quartz crystal was brought into vibration in an oscillator circuit utilizing the series resonance of the crystal. This configuration enabled us to obtain amplitudes of vibration equal to those for a parallel configuration (see papers (2,4) ),but By measuring the voltage drop on a given resistance by means of an electronic voltmeter, the current I through the vibrating quartz crystal was determined.…”

Section: Ol)mm In Thementioning

confidence: 99%

Diffraction of Neutrons on a Vibrating Quartz Crystal

Chalupa

Michalec

Petržı́lka

et al. 1968

Physica Status Solidi (b)

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Diffraction of a monochromatic beam of neutrons on the (11.0) plane of a nonvibrating and a vibrating quartz crystal was investigated. On the vibrating crystal even a 40-fold increase of the intensity of the diffracted beam of neutrons was observed, while the halfwidth of the rocking curve remained unchanged.First theoretical and experimental investigations concerning the diffraction of neutrons on a vibrating piezoelectric crystal are described in papers (1 to 5).Our research work was carried out on the VVRS-reactor of the Nuclear Research Institute of the Czechoslovak Academy of Sciences by means of the spectrometer described in the paper (6). For our measurements a collimated monochromatic beam of thermal neutrons with a divergence of about 15' and with a wavelength of 1.54 2 was used.Bragg diffraction of neutrons took place on plates cut from a natural quartz single crystal having a thickness of (2.84 2 0.Ol)m.m and (5.68 direction of the crystallographic a-axis. The length and width of these plates were the same and equal to (30.00 t 0. Ol)mm, one of the edges being parallel to the caxis. The surface of these plates was polished and over their areas perpendicular to the a-axis they were provided with electrodes of a thickness of 1 to 1.5 p m by means of silver evaporation in vacuum. The plates were fixed to the holder along their edges in such a way that one of the metallised areas perpendicular to the aaxis, i. e. the plane (11.0), was exposed to the beam of neutrons. 0.Ol)mm in theThe quartz crystal was brought into vibration in an oscillator circuit utilizing the series resonance of the crystal. This configuration enabled us to obtain amplitudes of vibration equal to those for a parallel configuration (see papers (2,4) ),but

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High frequency modulation of monoenergetic neutrons with a quartz piezoelectric crystal

Cited by 28 publications

References 2 publications

Neutron diffraction on piezoelectric vibrating bars

Neutron diffraction on piezoelectric vibrating bars

Effect of static electric field on neutron diffraction by lattice planes of KH2PO4

Diffraction of Neutrons on a Vibrating Quartz Crystal

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