Grazing incidence technique to obtain spatially resolved spectra from laser heated plasmas.

An experimental method is described in which a grazing incidence spectrograph is used to obtain spatially resolved spectra of laser heated plasmas in the 6-370-A region. In the experiment, small target spheres were irradiated by tightly focused laser beams. A tilted grazing incidence elliptical mirror placed 1.

High Resolution Rocket EUV Solar Spectrograph.

The design and performance of an Aerobee 150 rocket-borne solar spectrograph covering a wavelength range of 10-385 A are discussed. The spectrograph uses a gold-coated replica concave grating of 3-m radius with 1200 grooves/mm at an angle of incidence of 88 degrees . The spectra are recorded on glass photographic plates making possible wavelength determination to 0.

A Spectrometer for Observations of the Solar Extreme Ultraviolet from the OSO-I Satellite.

A spectrometer which has observed the EUV solar spectrum from the first orbiting solar observatory (OSO-I) is described, and the results are summarized. The unique problems which had to be overcome are discussed, and the ideas and methods used to solve those problems are described. A novel detector carriage, scanning drive, and electrical cable to the carriage, among other items, were developed.