Mixture Of Deuterium Research Articles

The stark effect in hydrogen and deuterium

Since hydrogen and deuterium present observable differences in the fine structure of the Balmer series, it was thought advisable to examine the Stark efforts with special reference to intensities. The photographs have been taken from a Lo Surdo source containing a mixture of hydrogen and deuterium. Plate 19 shows the results that the analyses of H α D α , H β D β , H γ D γ and H δ D δ . It may be noted that the intensity pattern for D α is asymmetric and that it is nearly the mirror image of the asymmetric pattern for H α . Although gradually less prominent in later members of the series, this feature is not entirely absent from H γ D γ as published in Nature (Foster and Snell 1934). Moreover, the contrasting asymmetries of D α , H α persist to some extent in analyses (Plate 20 (1)) from a canal ray source specially constructed with opposing beams, and operated at a pressure enormously in excess of usual values.

A Gas Density Balance for Determination of the Absolute Density of Protium—Deuterium Mixtures and Other Gases

A Gas Density Balance for Determination of the Absolute Density of Protium—Deuterium Mixtures and Other Gases

The Raman Spectrum of Deuterium

A number of observers have studied the emission spectra of mixtures of hydrogen and deuterium. The Fulcher bands of HD and D2 have been photographed [1]. In the extreme untrlaviolet Jeppesen [2], and Beutler and Mie [3], have obtained emission spectra from hydrogen-deuterium mixtures and have ascribed several bands to HD. From these data on HD, Urey and Teal [4] have calculated molecular constants for the molecule D2 in the ground state. No experimental data for this molecule in this state appear to have been obtained.

Mixtures of Deuterium and Protium Oxides as Ideal Solutions

Mixtures of Deuterium and Protium Oxides as Ideal Solutions

THE THERMAL CONDUCTIVITY OF DEUTERIUM

The thermal conductivities of deuterium and some mixtures of deuterium and hydrogen have been measured by a relative, "hot wire" method. The results are consistent with the authors' original conclusion that the deuterium molecule has the same molecular diameter as the hydrogen molecule. It follows also that the molecular heats of the hydrogen isotopes are the same.

Triatomic Ions in Mixtures of the Hydrogen Isotopes

A mass spectrograph analysis has been made of aged ions in mixtures of hydrogen and deuterium. The concentration of deuterium was varied from 84 percent to less than one percent. After drifting through 5 cm of gas at about 0.5 mm pressure, the ions were found to be over 95 percent triatomic; that is, H3+, H2D+, HD2+ and D3+. Measurement of the relative intensities of the triatomic ion peaks indicates a slightly greater number of H3+ and D3+ ions compared to H2D+ and HḊ2+ than would be expected from probability considerations if the H and D atoms behaved exactly alike. This tendency for like atoms to group together may be accounted for by taking cognizance of the proper equilibrium constant for the different types of diatomic molecules in the gas mixtures employed. There is no evidence of further preferential grouping in the formation of the triatomic ions from the primary molecular ions. The relative heights of the triatomic ion peaks may be used to determine the abundance of the isotopes in a sample of gas.