NUCLEAR AND ATOMIC ACTIVATION WITH HEAVY-ION BEAMS Academic Article uri icon

abstract

  • Heavy ion activation has been studied as a method for determining hydrogen. The reactions used [e.g.1H(7Li, n)7Be] are the "inverse" of well known reactions [e.g.7Li(p, n)7Be]. Nuclear activation parameters for the ion beams of interest (7Li2+,10B2+) have been studied. The analytical feasibility is demonstrated with the determination of hydrogen in titanium at the 100 and 30 ppm levels with relative precisions of 8 to 10%. Detection limits in titanium are in the 0.1 to 0.5 ppm range. Heavy ion bombardment is also accompanied by the emission of characteristic X-rays ("atomic" activation). The parameters governing X-ray emission and background production have been investigated. Experimental K and L X-ray yields from thick targets have been measured for many elements excited by On+ beams of 0.5 to 7 MeV/amu and Kr7+ beams of 0.5 to 1 MeV/amu. The simultaneous determination of trace elements at levels of 10 to several 100 ppm in microsamples (10-5 g) is demonstrated on biological specimens. K and L X-ray yields and corresponding detection limits have also been measured with the7Li2+ and10B2+ beams used for the nuclear activation of hydrogen. With these beams (6 MeV/amu) simultaneous nuclear and atomic activation is possible, yielding an unusual multielement trace analysis capability covering hydrogen and medium and high Z elements. 1978 Akadmiai Kiad.

published proceedings

  • JOURNAL OF RADIOANALYTICAL CHEMISTRY

author list (cited authors)

  • MCGINLEY, J. R., STOCK, G. J., SCHWEIKERT, E. A., CROSS, J. B., ZEISLER, R., & ZIKOVSKY, L.

citation count

  • 11

complete list of authors

  • MCGINLEY, JR||STOCK, GJ||SCHWEIKERT, EA||CROSS, JB||ZEISLER, R||ZIKOVSKY, L

publication date

  • September 1978