Nondestructive analysis of laser fusion microsphere targets using rotational Raman spectroscopy
- 1 December 1979
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 50 (12) , 7894-7897
- https://doi.org/10.1063/1.325981
Abstract
The use of rotational Raman scattering for nondestructive analysis of laser fusion microsphere targets is reported. Typical hollow‐glass‐microsphere sample characteristics are 100 μm in diameter, 1.0 μm in glass wall thickness, and 0.5 nl in volume, containing a mixture of hydrogen, deuterium, and tritium gases at pressures of 10–70 atm (total gas sample weights of 5 ng). Relative species mole fraction measurements for all hydrogen isotope species are determined from spectral peak height analysis of rotational Raman spectra. Accuracies of ±0.01 (mole fraction) are obtained from spectra requiring 20 min scan time. Individual species detectability limits are less than 100 picogram. Absolute partial pressure measurements (accurate to ±20%) are obtained using calibration spheres of known diameter and pressure.This publication has 17 references indexed in Scilit:
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