The Proton Microprobe: A Powerful Tool for Nondestructive Trace Element Analysis

Details The Proton Microprobe: A Powerful Tool for Nondestructive Trace Element Analysis The Proton Microprobe: A Powerful Tool for Nondestructive Trace Element Analysis

Feb 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978sci...199..765b&link_type=abstract

Science, Volume 199, Issue 4330, pp. 765-768

Mathematics

Logic

3

Scientific paper

A proton microprobe capable of focusing proton beams with energies up to 6 million electron volts to a spot size of 2 × 2 square micrometers has been used for chemical analysis of small grains of minerals in lunar samples by proton-induced x-ray emission. The proton microprobe is preferable to the electron microprobe for analyzing trace elements whose concentrations are below the detection limit of the latter and for analyzing objects with numerous major and trace elements with a wide range of atomic numbers. Application of the proton microprobe to biological samples is feasible.

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