Neutron Diffraction by the Gases<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">N</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>, C<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">F</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>, and C<mml:math xmlns:m

Alcock, Norman; Hurst, D. G.

doi:10.1103/physrev.83.1100

Cited by 22 publications

(4 citation statements)

References 9 publications

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“…The blue hatched area shows the simulation Experimental data of X distribution (black dot) and simulations of incident neutrons (top red hatch) and scattered neutrons (bottom blue hatch). of the scattered neutrons, where the scattering distribution was calculated with the semiclassical model [48,49]. Both simulations were scaled to the experimental data; the simulation for the scattered neutrons was normalized in the region of |X| > 54 mm, and the simulation for the incident neutrons was scaled so as to reproduce the experimental data together with the contribution of the scattered neutrons in the region of |X| ≤ 54 mm.…”

Section: Procedures (A): Separation By Maximum Pulse Heightmentioning

confidence: 99%

Neutron lifetime measurement with pulsed cold neutrons

Hirota,

Ichikawa,

Ieki

et al. 2020

Preprint

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The neutron lifetime has been measured by comparing the decay rate with the reaction rate of 3 He nuclei of a pulsed neutron beam from the spallation neutron source at the Japan Proton Accelerator Research Complex (J-PARC). The decay rate and the reaction rate were determined by simultaneously detecting electrons from the neutron decay and protons from the 3 He(n,p) 3 H reaction using a gas chamber of which working gas contains diluted 3 He. The measured neutron lifetime was 898 ± 10 stat +15 −18 sys s.

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Section: Procedures (A): Separation By Maximum Pulse Heightmentioning

confidence: 99%

Neutron lifetime measurement with pulsed cold neutrons

Hirota,

Ichikawa,

Ieki

et al. 2020

Preprint

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“…If the target gas samples are contaminated with atmospheric gas molecules, q-dependence in the differential cross section will arise due to molecular diffraction [28]. The gas samples introduced into our gas cell were of sufficiently high purity that this effect would be negligible, however molecules trapped in the gas cell walls may break free through a process called "outgassing", and over time can result in significant systematic error.…”

Section: B Gas Handlingmentioning

confidence: 99%

Search for deviations from the inverse square law of gravity at nm range using a pulsed neutron beam

Haddock

Hirota

et al. 2018

Phys. Rev. D

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We describe an experimental search for deviations from the inverse square law of gravity at the nanometer length scale using neutron scattering from noble gases on a pulsed slow neutron beamline. By measuring the neutron momentum transfer (q) dependence of the differential cross section for xenon and helium and comparing to their well-known analytical forms, we place an upper bound on the strength of a new interaction as a function of interaction length λ which improves upon previous results in the region λ < 0.1 nm, and remains competitive in the larger λ region. A pseudoexperimental simulation developed for this experiment and its role in the data analysis described. We conclude with plans for improving sensitivity in the larger λ region.

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“…The structure oftetrafluorometh:mp (~:nh()n tAt.rafluoride) has been studied by Alcock and Hurst (1951), using neutron diffraction; and by Bowen (1954), Thornton (1954. Hoffman and Livingston (1953), and Brockway (1954), using the electron diffraction technique.…”

Section: Tetrafluoromethanementioning

confidence: 99%

Ideal Gas Thermodynamic Properties of Eight Chloro- and Fluoromethanes

Rodgers

Chao

Wilhoit

et al. 1974

Journal of Physical and Chemical Reference Data

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The structural data, vibrational assignments, enthalpies of vaporization and formation for chloromethane, dichloromethane, trichloromethane, tetrachloromethane, fluoromethane, difluoromethane, trifluoromethane, and tetrafluoromethane were critically reviewed_ Based on the selected best values, the thermodynamic properties for each of these eight chloro-and fluoromethanes were calculated by statistical thermodynamic methods using the rigid-rotor harmonic-oscillator approximations. The derived entropies and heat capacities are compared with the available third law entropies and vapor heat capacities. The calculated values of C~, So, and l:!.Hr at 298.15 and 700 K are compared with those reported in the other major compilations.

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Neutron Diffraction by the GasesN2, CF4, and C

Cited by 22 publications

References 9 publications

Neutron lifetime measurement with pulsed cold neutrons

Neutron lifetime measurement with pulsed cold neutrons

Search for deviations from the inverse square law of gravity at nm range using a pulsed neutron beam

Ideal Gas Thermodynamic Properties of Eight Chloro- and Fluoromethanes

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