Results 221 to 230 of about 9,926 (249)

Influence of focus variation on linewidth measurements

SPIE Proceedings, 2005
The influence of spatial resolution on linewidth measurements in the critical dimension scanning electron microscope (CD-SEM) was investigated experimentally. Measurement bias variation and measurement repeatabilities of four edge detection algorithms were evaluated with a series of images at varying focus in order to determine the effect of resolution
Maki Tanaka, John S. Villarrubia, Andras E. Vladar   +2 more
openaire   +1 more source

Linewidth measurement on a 140 GHz gyrotron

16th International Conference on Infrared and Millimeter Waves, 1991
The linewidth of a single 140 GHz gyrotron pulse has been measured using a time domain sampling technique. A spectral resolution of 60 kHz could be achieved, whereas the pulse length of the gyrotron did not exceed 600 μs. The paper describes the measurement set-up and preliminary results are presented.
openaire   +1 more source

Linewidth Measurements of Mercury's Alkali Exosphere

Sunlight can shape elements in Mercury’s thin atmosphere into an escaping cometlike tail. Solar photons are absorbed from one direction—the Sun—and scatter isotropically, imparting a net momentum in the anti-sunward direction.
Patrick Lierle, Carl Schmidt, Emma Lovett   +2 more
openaire   +1 more source

An Improved Microwave Spectrometer for Linewidth Measurements

Review of Scientific Instruments, 1969
A microwave spectrometer capable of determining linewidth data with repeatability better than 2% for spectral lines of intensities of 10-6 and 10-7 cm-1 has been developed. The technique of source modulation has been utilized effectively to produce molecular transition without resorting to the conventional technique of Stark modulation.
openaire   +1 more source

Rules for resolution correction of measured linewidths

Spectrochimica Acta Part A: Molecular Spectroscopy, 1985
Abstract The problem of correcting measured linewidths for extraneous broadening is considered. In cases where the measured lineshape is a convolution of two profiles of known types, the true linewidth may be recovered without resort to deconvolution. In this work, convolved pairs of several standard types of profile—rectangular, triangular, Gaussian
openaire   +1 more source

The Measurement of Narrow Magnetic-Resonance Linewidths

IEEE Transactions on Instrumentation and Measurement, 1965
A discussion is given of the origin of various errors that may occur in the measurement by cavity perturbation techniques of narrow magnetic-resonance linewidths. It is shown that the absorption by a spherical magnetic sample in a microwave cavity varies as sin2?, where ? is the angle between the static and microwave magnetic fields.
openaire   +1 more source

Analysis of errors in linewidth measurements

Journal of Applied Spectroscopy, 1973
Ya. F. Volkov, N. I. Mitina
openaire   +1 more source

Phonon linewidths measured by neutron scattering

Physics Today, 1973
Two Brookhaven experimenters, John D. Axe and Gen Shirane, have used inelastic neutron scattering to detect the influence of the superconducting energy gap upon phonon lifetimes in Nb3Sn. Speaking at the January meeting of the American Physical Society in New York, Axe said their results yield estimates of the superconducting energy gap and the size ...
openaire   +1 more source

Precision measurement of transition linewidths

AIP Conference Proceedings, 1995
W. A. van Wijngaarden, J. Li
openaire   +1 more source

Ultra-Narrow Laser Linewidth Measurement

2011
Ph. D.
openaire   +1 more source