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  Partner: UNT Libraries Government Documents Department
 Decade: 1970-1979
 Year: 1971
 Serial/Series Title: NBS monograph
 Collection: Technical Report Archive and Image Library
The Effect of Time Ordering on the Lyman α Profile

The Effect of Time Ordering on the Lyman α Profile

Date: June 1971
Creator: Godgrey, J. T.; Vidal, C. R.; Smith, E. W. & Cooper, J.
Description: Report investigating the effects of time-ordering over the complete line profile using a unified theory of spectral line broadening previously developed. The behavior of the time-ordered thermal average and un-time-ordered thermal average are compared. The Fourier transform of the thermal average is obtained analytically. Calculations for the line profile of the Lyman-[functional symbol alpha] line of hydrogen are presented and are representative in that the full thermal average is replaced by the thermal average with the electron velocity distribution approximated by f(v)=[functional symbol alpha] (v-vav) where vav is the thermal velocity for the plasma in question.
Contributing Partner: UNT Libraries Government Documents Department
A High-Dispersion Spectral Analysis of the Ba II Star HD 204075 (ζ Capricorni)

A High-Dispersion Spectral Analysis of the Ba II Star HD 204075 (ζ Capricorni)

Date: March 1971
Creator: Tech, Jack L.
Description: Report discussing a double differential curve of growth analysis for the Ba II star S Capricorni. Both the sun and � Virginis (G9 II-III) were used as comparison stars. The observational material consists of equivalent widths, central depths, and half-widths for 1100 spectral lines measured on direct-intensity tracings of plates obtained by J. L. Greenstein at the coude focus of the 200-in telescope. The plates cover the spectral regions 3880-4825 A and 5100-6720 A at reciprocal dispersions of 2.3 and 3.4 A/mm, respectively. Atmospheric abundances have been derived for 37 elements.
Contributing Partner: UNT Libraries Government Documents Department
The Mechanics of Pneumatic Tires

The Mechanics of Pneumatic Tires

Date: November 1971
Creator: Clark, Samuel K.
Description: From Abstract: "This treatise is an attempt to provide a rational descriptive and analytical basis for tire mechanics. Chapters of this book are contributed by active research workers in the fields of rubber and textile properties, friction, material properties, tire stress problems, tire design and construction, vehicle skid and handling, and tire mechanical properties."
Contributing Partner: UNT Libraries Government Documents Department
Standard X-ray Diffraction Powder Patterns: Section 9. Data for 63 Substances

Standard X-ray Diffraction Powder Patterns: Section 9. Data for 63 Substances

Date: December 1971
Creator: Swanson, Howard E.; McMurdie, Howard F.; Morris, Marlene C.; Evans, Eloise H. & Paretzkin, Boris
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Unified Theory Calculations of Stark Broadened Hydrogen Lines Including Lower State Interactions

Unified Theory Calculations of Stark Broadened Hydrogen Lines Including Lower State Interactions

Date: January 1971
Creator: Vidal, C. R.; Cooper, J. & Smith, E. W.
Description: Report on calculations of hydrogen Stark broadening on the basis of the unified classical path theory which has been extended to include lower state interactions in the final line profile. A detailed comparison with experiments in the density range 10-13-10-17 cm-3 is given.
Contributing Partner: UNT Libraries Government Documents Department