Applications of microwave scanning ESR microscope: human tooth with metal.
A microwave scanning ESR microscope has been developed to study the distribution of paramagnetic ions or radicals in various materials, especially in minerals. The microwave scanning microscope consists of a cavity with an aperture over which a sample is moved using mechanical stages and computer-controlled stepping motors. The EPR signal intensities at all positions are composed on a CRT display as an image. A new TE111-mode cylindrical cavity system was designed to obtain better sensitivity and resolution. ESR images of gamma-rayed human teeth were obtained to study the effect of secondary electrons from the adjacent metal on the defect formation in a tooth.
Hochi
A
A
Department of Earth and Space Science, Faculty of Science, Osaka University, Japan.
Furusawa
M
M
Ikeya
M
M
D004578:Electron Spin Resonance Spectroscopy; D005720:Gamma Rays; D006801:Humans; D066298:In Vitro Techniques; D008670:Metals / Q000528:radiation effects*; D008853:Microscopy / Q000295:instrumentation; D011874:Radiometry / Q000379:methods*; D014070:Tooth / Q000528:radiation effects*
D008670:Metals