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A MAGNETIC FIXED POINT FOR THERMOMETRY BELOW 1°K
1.This is a helium‐neon gas laser tube (No. LT‐11) produced by PEK Labs, Inc., Sunnyvale, California. We thank Mr. J. P. Moffat, Jr., and the PEK Labs, Inc., for providing this laser tube.
2.This spectrum was recorded on the rapid‐scan IR spectrometer (LiF optics) developed in these laboratories by Dr. K. C. Herr. See K. C. Herr and G. C. Pimentel, Appl. Opt. (in press).
3.These frequency measurements were performed using a Raman‐type multiple reflection cell (rather than the laser cavity) under conditions in which the continued emission extended over the 50‐μsec scan time. The stimulated emission was first discovered with this cell, and time traces of the emission resemble those shown in Fig. 1.
4.D. Porret and C. F. Goodeve, Proc. Roy. Soc. (London) A165, 31 (1938).
5.B. P. Ayscough, J. Chem. Phys. 24, 944 (1956).
6.A. Shepp, J. Chem. Phys. 24, 939 (1956).
7.D. L. Bunker and N. Davidson, J. Am. Chem. Soc. 80, 5085 (1958).
8.For any fixed pressure, an energy threshold is also observed, but these have not yet been examined in detail.
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