Crifo J F, Fahr H J, Seidi P, Wulf-Mathies C
Laboratoire de Physique Stellaire et Planétaire, P.O. Box 10, 91370 Verrieres le Buisson, France.
Rev Sci Instrum. 1979 Sep;50(9):1047-53. doi: 10.1063/1.1136008.
A rocket payload able to perform a thorough and independent analysis of the He I 58.43340-nm geocoronal and interplanetary emissions is presented. It includes a sun-pointed resonant absorption spectrometer and a sky-scanning resonant absorption photometer. Both incorporate a similar helium resonance cell of original design featuring a most flexible pressure scanning capability and an accurate pressure measuring device, so that scanning by wavelength bandpasses from 20 down to 1 pm can be achieved. A description of the design and calibration of the instrument is given, followed by an indication of its successful operation in flight.
