Laser Raman Microprobe Method
نویسندگان
چکیده
منابع مشابه
Laser Microprobe Mass Spectrometry LASER MICROPROBE MASS SPECTROMETRY: POSSIBILITIES AND LIMITATIONS
Laser microprobe mass spectrometry (LMMS) employs an intense UV pulse from a focused highpower laser to evaporate and ionize a microvolume (% 1 um3) of solid samples at relatively elevated energy density (106-101’ W cmm2). The ions produced by the interaction of photons with the condensed phase are then mass analyzed in a time-of-flight mass spectrometer and yield a complete mass spectrum on ea...
متن کاملMicroscopical speciation analysis with laser microprobe mass
This paper presents a set of data which compares the potential and limitations of laser microprobe mass spectrometry (TOFLMMS and FT-LMMS) and static secondary ion mass spectrometry (S-SIMS) for inorganic speciation at a microscopical level. In general LMMS yields prominent signals of adduct ions consisting of the intact molecule combined with a stable ion, which allows a direct identification ...
متن کاملLaser microprobe (U–Th)/He geochronology
A new analytical method had been developed to enable high-spatial-resolution (U–Th)/He dating of accessory minerals. It involves the use of a focused ArF excimer to ablate pits in a polished grain surface, with the evolved gases spiked for isotope-dilution measurement of radiogenic He. These data are converted to concentrations by precise measurement of each pit using an optical interferometric...
متن کاملLaser Microprobe Mass Spectrometry: Possibilities and Limitations
Laser microprobe mass spectrometry (LMMS) offers a great potential for inorganic analysis and speciation as well as for organic structural characterization. This remarkable flexibility makes the results critically dependent on the experimental conditions, however, so an exact description is hard to achieve, since inaccessible local parameters are involved. The paper deals in detail with this as...
متن کاملRaman microprobe spectrometer installed in a super-conducting magnet.
A Raman microprobe spectrometer that could be installed in the bore of a cryogen free super-conducting magnet (10 T) was designed and constructed for the investigation of the external magnetic field effect on the Raman spectra of molecular aggregates in solutions and at interfaces. The performance of the present instrument was demonstrated by measuring the magnetic field effect (0 - 10 T) on th...
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ژورنال
عنوان ژورنال: THE JOURNAL OF JAPAN SOCIETY FOR LASER SURGERY AND MEDICINE
سال: 1986
ISSN: 0288-6200
DOI: 10.2530/jslsm1980.7.2_3