Nondestructive analysis of laser fusion microsphere targets using rotational Raman spectroscopy

Journal Article · Sat Dec 01 04:00:00 EST 1979 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.325981· OSTI ID:5859319

Drake, M C; Rosasco, G J; Schneggenburger, R; Nolen, Jr, R L

The use of rotational Raman scattering for nondestructive analysis of laser fusion microsphere targets is reported. Typical hollow-glass-microsphere sample characteristics are 100 ..mu..m in diameter, 1.0 ..mu..m 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.

• Research Organization: National Bureau of Standards, Washington, D.C. 20234
• OSTI ID: 5859319
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 50:12; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

060201* -- Fusion Fuels-- Fabrication & Testing-- (1980-1987)
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ACCURACY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALIBRATION
CHEMICAL ANALYSIS
CRYOGENIC FLUIDS
DATA
DEUTERIUM
ELEMENTS
ENERGY LEVELS
EXCITED STATES
FLUIDS
GASES
GLASS
HYDROGEN
HYDROGEN ISOTOPES
INFORMATION
ISOTOPES
LASER FUSION REACTORS
LASER TARGETS
LIGHT NUCLEI
MEDIUM PRESSURE
MICROSPHERES
NONDESTRUCTIVE ANALYSIS
NONMETALS
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
PEAKS
RADIOISOTOPES
RAMAN SPECTRA
ROTATIONAL STATES
SCATTERING
SENSITIVITY
SPECTRA
SPHERES
STABLE ISOTOPES
TARGETS
THERMONUCLEAR REACTORS
TRITIUM
VOLUME
YEARS LIVING RADIOISOTOPES