Abstract
Laser microprobe mass-spectroscopic detection was applied to inorganic elements in an organic specimen with the intention of obtaining the basic characteristics of the specimen for biomedical application. The fourth harmonic of an Nd:YAG laser was employed as the radiation source. An organic compound containing alkali elements of low concentration and high homogeneity was used as the specimen. The time-of-flight measurements and mass-spectroscopic observations were performed for ions emerging from the laser-produced microplasma. The highest kinetic energy of ions Eh and the total number NT of Na ions were found to be scaled by the laser intensity φ1 as Eh∝φ10.39 and NT∝φ11.1, in the range of 3×107 to 3×108 W·cm-2. The kinetic energy of ions extended to several hundred eV for laser irradiation of the order of 108 W/cm2, and spread over about 100 eV as evaluated from the FWHM of the TOF profiles. A sensitivity of better than 10-8 g was achieved with ease for a single-shot laser mass-analytic detection of Na, Ca, and Cs in the organic compound.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
