An estimate of line width and pressure from the high resolution spectrum of Jupiter at 11,000 angstrom units
Pressure and line width estimate from high resolution image tube spectra of Jupiter at 11,000 A
Farmer, C. B.↗
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An inexpensive multichannel scaler with channel widths of less than 1 mu sec
Multistop time-to-pulse-height conversion unit to extend capability of pulse height analyzer for multichannel time analysis with narrow channel widths
Silverberg, E. C.↗
Measured stark widths and shifts for neutral atomic lines
Stark-broadened neutral atomic line widths and shifts, determining electron densities from H beta profiles and pressure-temperature data
Bengtson, R. D.↗
The temperature dependence of the self- broadened half-width of the P-20 line in the 001-100 band of CO2
Temperature dependence of laser emission line self broadened half widths in spectral band of carbon dioxide at constant pressure
Ely, R.↗
Pulse Amplitude and Width Detector-Patent
Electrical testing apparatus for detecting amplitude and width of transient pulse
Slayden, M. D.↗
Classification and signal analysis of pulse- width-modulated amplifiers, part 3 Annual report
Classification and signal analysis of pulse width modulated amplifiers
Honnell, M. A.↗
Variable pulse width multiplier Patent
Design and development of variable pulse width multiplier
Groom, N. J.↗
Variable width pulse integrator Patent
Solid state integrator for converting variable width pulses into analog voltage
Newcomb, A. L., Jr.↗
Digital pulse width selection circuit Patent
Development of electric circuit for production of different pulse width signals
Slowikowski, D. F.↗
Cancellation of slit-width and doppler broadening effects in the spectroscopy of fast ion beams
Spectrometer slit-width cancellation by Doppler shift of light emission by fast ion beams, resulting in spectral lines increased intensities
Leavitt, J. A.↗
Widths of optically thick lines
Resonance broadening measurements of alkali metals, giving relation between optically thick and thin full widths for Lorentzian and Gaussian line shapes
Exton, R. J.↗
Experimental widths and shifts for 3s-3p neon lines
Neon red lines Stark widths and shifts in function of electron and neutral Ne densities in shock tube
Miller, M. H.↗
Development and performance of pulse-width-modulated static inverter and converter modules
Pulse-width-modulated inverter and converter modules are being developed for modular aerospace electrical power systems. The modules, rate 2.5 kilowatts per module and 10-minute - 150-percent overload, operate from 56 volts dc. The converter module provides two output voltages: a nominal link voltage of 200 volts dc when used with the inverter, and 150 volts dc to a load bus when used separately. The inverter module output is 400-hertz, sinusoidal, three-phase, 120/208 volts. Tests of breadboard models with standard parts and integrated circuits show rated power efficiencies of 71.4 and 85.1 percent and voltage regulation of 5 and 3.1 percent for inverter and converter modules, respectively. Sine-wave output distortion is 0.74 percent.
Pittman, P. F.↗
Pionic X-ray yields and 2p-level widths in Li6, Be9, C12 and O16.
Measurement of the intensities of 2p-1s pionic X-ray transitions in Li6, Be9, C12 and O16 by using an absolute-efficiency technique. Population probability predictions for the mesonic levels, and values for the strong-interaction levels widths are obtained by pion-cascade calculations. Numerical values are also obtained for the 2p-level absorption broadening.
Sapp, W. W., Jr.↗
Speed-dependent collisional width and shift parameters in spectral profiles.
Derivation of an expression for the spectral profile, termed a speed-dependent Voigt profile (SDVP), taking into account speed-dependent shift and width parameters which are calculated on the basis of an active atom-perturber interaction. It is shown that an analysis of line shapes in terms of simple Voigt profiles (rather than the SDVP) may lead to considerable errors in the determination of characteristic atomic parameters, especially in systems where the perturber to active atom mass ratio is large. It is also noted that the speed-dependent shift leads to an asymmetrical profile, and such a profile is displayed.
Berman, P. R.↗
Diatomic predissociation line widths
Predissociation by rotation and curve crossing in diatomic molecules is discussed. The pattern of predissociation line widths is seen as providing a highly sensitive yardstick for the determination of unknown potential curves. In addition, the computation of such a pattern for given potential curves is considered a matter of routine, unless the predissociation happens to occur from an adiabatic potential curve. Analytic formulas are used to provide physical insight into the details of the predissociation pattern, to the extent that a direct inversion procedure is developed for determination of the repulsive potential curves for Type 1 predissociations.
Child, M. S.↗
Seasonal changes of littoral transport and beach width and resulting effect on protective structures
The shorelines of Maryland's portion of the Chesapeake Bay exhibit seasonal changes in direction of littoral transport and resulting beach width. Observation and study of this process at selected locations emphasizes the necessity of study for a complete year's seasonal cycle before stating erosion rates of an area to be protected by structures and the cyclincal presence or absence of beaches. Seasonal beach conditions at four selected sites are described along with resulting physical changes to protective structures. Through the use of ERTS-1 multi-spectral photography, it will be possible to make widespread predictions elsewhere in the Bay as a direct aid in protective structure design.
Slaughter, T. H.↗
Pulsar magnetospheres, braking index, polar caps, and period-pulse-width distribution.
An investigation is conducted concerning the trapping of gas and its effect on the structure of the magnetic field. The aligned and orthogonal cases are discussed in detail. In each case, there are small collection zones which are both microscopically and macroscopically stable. By determining where macroscopic stability changes to instability, the separatrix between closed and open field lines is investigated together with the sizes and shapes of the polar caps. This information makes it possible to reexamine the period-pulse-width distribution and to compare it with observational data.
Roberts, D. H.↗