Cavity ring-down spectroscopy measurements of sub-Doppler hyperfine structure
نویسندگان
چکیده
D. A. Long,1 D. K. Havey,2 M. Okumura,1 C. E. Miller,3 and J. T. Hodges2 1Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA 2Process Measurements Division, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899, USA 3Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, California 91109, USA (Received 23 March 2010; published 16 June 2010)
منابع مشابه
Determination of Number Density and Velocity of Sputtered Particles by Cavity Ring-Down Spectroscopy
Sputter erosion is a critically important process in many electric propulsion (EP) devices, from the point of view of both lifetime assessment and contamination assessment. We report the use of cavity ring-down spectroscopy (CRDS) as a diagnostic tool to quantify sputter erosion. We discuss measurements of sputtered particle number density and velocity obtained from a bench-top setup consisting...
متن کاملSaturated-absorption cavity ring-down spectroscopy.
We report on a novel approach to cavity ring-down spectroscopy with the sample gas in saturated-absorption regime. This technique allows us to decouple and simultaneously retrieve the empty-cavity background and absorption signal, by means of a theoretical model that we developed and tested. The high sensitivity and frequency precision for spectroscopic applications are exploited to measure, fo...
متن کاملCavity ring-down spectroscopy of Doppler-broadened absorption line with sub-MHz absolute frequency accuracy.
A continuous-wave cavity ring-down spectrometer has been built for precise determination of absolute frequencies of Doppler-broadened absorption lines. Using a thermo-stabilized Fabry-Pérot interferometer and Rb frequency references at the 780 nm and 795 nm, 0.1 - 0.6 MHz absolute frequency accuracy has been achieved in the 775-800 nm region. A water absorption line at 12579 cm(-1) is studied t...
متن کاملPrecise measurements of UV atomic lines: Hyperfine structure and isotope shifts in the 398.8 nm line of Yb
– We demonstrate a technique for frequency measurements of UV transitions with sub-MHz precision. The frequency is measured using a ring-cavity resonator whose length is calibrated against a reference laser locked to the D2 line of Rb. We have used this to measure the 398.8 nm 1S0 ↔ P 1 line of atomic Yb. We report isotope shifts of all the seven stable isotopes, including the rarest isotope Yb...
متن کاملContinuous wave cavity ring down spectroscopy measurements of velocity distribution functions of argon ions in a helicon plasma.
We report continuous wave cavity ring down spectroscopy (CW-CRDS) measurements of ion velocity distribution functions (VDFs) in low pressure argon helicon plasma (magnetic field strength of 600 G, T(e) ≈ 4 eV and n ≈ 5 × 10(11) cm(-3)). Laser induced fluorescence (LIF) is routinely used to measure VDFs of argon ions, argon neutrals, helium neutrals, and xenon ions in helicon sources. Here, we d...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2010