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SIX METER FOCAL LENGTH EBERT-TYPE INFRARED SPECTROGRAPH. PART I. DETAILS OF THE SPECTROGRAPH. PART II. PRECISION OF MEASUREMENTS

Technical Report ·
OSTI ID:4680178
A description is presented of a recently constructed Ebert-type vacuum infrared spectrograph. The grating employed is a 73.25 grooves per millimeter 10 x 5 in. ruled echelle blazed for an angle of 63 deg 26'. The entire instrument operates in a vacuum. Facilities are provided for use of the spectrograph with tritium-substituted compounds like NT/sub 3/, TF, CT/sub 4/, etc. A semi- empirical procedure for determining spectral positions to an accuracy of plus or minus 0.005 cm/sup -1/ in the near infrared region is discussed. The infrared spectra were scanned by rotating the gratirg with the help of a precision screw. (auth)
Research Organization:
Ohio State Univ., Columbus
NSA Number:
NSA-17-032341
OSTI ID:
4680178
Report Number(s):
TID-19175
Country of Publication:
United States
Language:
English

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