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in subjects: "Geiger-Mueller Counters"

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A Statistical Model of Nuclear Level Spacings

A generalization of Wigner's simple model for the distribution of nuclear level spacings is studied. The generalization is based on a stochastic process which reproduces the correct joint probabllity distribution of N energy levels for small spacings. The case N = 3, which includes the effect of the correlation between adjacent spacings, is discussed in detail. The resulting distribution and the correlation coefflcient are compared with experimental data. No definite conclusion can be drawn exc… more

Date: December 1, 1960

Creator: Dresner, L. & Inonu, E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Measurement of Electron Attachment in Oxygen-Methane and Oxygen-Carbon Dioxide Mixtures

The formation of heavy negative ions by the attachment of low-energy electrons to oxygen molecules was studied for small amounts of oxygen mixed with methane or carbon dioxide. The rate of attachment in both cases was found to depend on the electron energy, the pressure of the oxygen and the non-attaching gas, and on the kind of non-attaching gas. In general, the attachment increases as electron enprgy decreases or as either oxygen or total pressure increases. The value of the attachment coeffi… more

Date: January 25, 1960

Creator: O'Kelly, L. B.; Hurst, G. S. & Bortner, T. E.