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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