We present a catalogue of photoelectric UBV photometry and some spectral types for 610 stars in a field in Puppis centred at (l, b) = (245°, 0°). This catalogue reports results taken from the literature, as ...
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The pair correlation function. g ( r ), for low-density chlorine gas was measured using neutron diffraction. A simple model for the system was used to demonstrate that density effects in g ( r ) should be negligible a...
The pair correlation function. g ( r ), for low-density chlorine gas was measured using neutron diffraction. A simple model for the system was used to demonstrate that density effects in g ( r ) should be negligible at the level of accuracy of the experiment. As a result there is a simple relationship between g ( r ) and the intermolecular interaction potential. Comparisons were made to theoretical calculations of g ( r ) using a published site-site model potential and a site-site plus quadrupole model. It was found that the site-site model was better than the site-site plus quadrupole model in the region of molecular contact. However, the temperature dependence of neither model was satisfactory.
We reanalyse the published X-ray diffraction data on water with the object of deducing the isochoric temperature derivative of the structure factor of H 2 O at 4°C and 1 atm. These results are compared to the pub...
We reanalyse the published X-ray diffraction data on water with the object of deducing the isochoric temperature derivative of the structure factor of H 2 O at 4°C and 1 atm. These results are compared to the published molecular dynamics results for the MCY potential. Similar (published) neutron-diffraction results are discussed. The effect of “hydrogen-bond formation” on neutron and X-ray pair correlation functions is discussed qualitatively and quantitatively. The probable structural effects of non-additive forces are deduced from the behaviour of these derivatives, and some comments on quantum effects are given.
Optothermal (bolometric) detection and a line-tunable CO 2 laser have been used, in conjunction with supersonic beams of dilute mixtures of SF 6 or CH 3 F in Ar, to obtain the infrared spectra of Ar clusters containin...
Optothermal (bolometric) detection and a line-tunable CO 2 laser have been used, in conjunction with supersonic beams of dilute mixtures of SF 6 or CH 3 F in Ar, to obtain the infrared spectra of Ar clusters containing these molecules. The spectra obtained at the limit of large clusters are remarkably similar to the infrared Ar matrix deposition spectra of the same molecules.
The laser-Stark spectrum of the ν 3 vibration of fluoromethane in a molecular beam is recorded using bolometric detection methods. The resolution of the spectra is limited by the homogeneity of the applied electric f...
The laser-Stark spectrum of the ν 3 vibration of fluoromethane in a molecular beam is recorded using bolometric detection methods. The resolution of the spectra is limited by the homogeneity of the applied electric field to one part in 3000 of the Stark shift required to tune a transition into resonance. The observation of several field induced transitions of fluoromethane is reported.
Using the Anderson model in the nonmagnetic limit, we have calculated some properties of the superconducting virtual-bound-state alloys. The calculated properties are the transition temperature Tc, the jump in specifi...
Using the Anderson model in the nonmagnetic limit, we have calculated some properties of the superconducting virtual-bound-state alloys. The calculated properties are the transition temperature Tc, the jump in specific heat at Tc, ΔC, the electronic density of states, and the tunneling conductance. Special attention is paid to the systematic variation of these properties with the resonance width Γ. It is found that the initial slope of the normalized ΔC versus the normalized Tc curve has a maximum value of 3.638, which is the highest value reported in the literature for the impurity problem. Our tunneling study suggests that for an electron-tunneling search of bound states in alloys with relatively large Γ, an ultra-low-temperature experiment is desirable.
By the treatment of the electron-impurity scattering exactly by means of a t matrix, the effect of nonmagnetic impurities on antiferromagnetic superconductors has been investigated in detail. Our study is an extension...
By the treatment of the electron-impurity scattering exactly by means of a t matrix, the effect of nonmagnetic impurities on antiferromagnetic superconductors has been investigated in detail. Our study is an extension of the recent work of Nass, Levin, and Grest to the strong-scattering case. The appearance of bound states due to impurities for HQ>Δ is discussed (here HQ is the antiferromagnetic molecular field and Δ is the superconducting order parameter). Investigating the density of states [N(ω)], we show the growth of the "impurity band" with the increase in impurity concentration. The "dirty"-limit behavior of the system and the condition for the appearance of the gaplessness are discussed analytically.
The Shiba-Rusinov theory of magnetic impurities in a superconductor is investigated, with special attention paid to the role of the potential scattering term in the electron-impurity interaction. The meaning of Anders...
The Shiba-Rusinov theory of magnetic impurities in a superconductor is investigated, with special attention paid to the role of the potential scattering term in the electron-impurity interaction. The meaning of Anderson's theorem in the Shiba-Rusinov theory is discussed.
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