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  Partner: UNT Libraries Government Documents Department
 Decade: 1970-1979
 Year: 1971
 Serial/Series Title: National Bureau of Standards Reports
 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.
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: None
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.
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.
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