Abstract
A comprehensive survey has been made on the application of charged particle activation analysis for the detection of traces of medium Z elements (40 [less than or equal to] Z [less than or equal to] 58, 72, 74) using four different charged particles; protons and deuterons of 20 MeV, helium-3 and helium-4 ions of 40 MeV. The search for the product nuclides was limited to the radiosiotopes with half-lives ranging from 10 minutes to 3 days. Under the experimental conditions used, proton activation was found to provide an optimum compromise between sensitivity and selectivity. The excitation functions for the following high sensitivity proton reactions were measured: Zr(p,xn)[superscript 90]Nb, Mo(p,xn)[superscript 94]Tc, Mo(p,2n)[superscript 99mm]Tc, Pd(p,xn)[superscript104]Ag, Ag(p,n)[superscript 107]Cd, Cd(p,xn)[superscript 109]In, Cd(p,xn)[superscript 110m]In, Cd(p,xn)[superscript 113m]In, Sn(p,xn)[superscript 115]Sb, Sn(p,xn)[superscript 116m]Sb, Sn(p,xn)[superscript 117]Sb, Sn(p,xn)[superscript 118ml]Sb, Te(p,2n)[superscript 121]I, Te(p,xn)[superscript 123]I, Te(p,n)[superscript 128]I, Te(p,n)[superscript 130]I, Cs(p,n)[superscript 133m]Ba . The pertinent ??-ray energies were also redetermined. The feasibility of nondestructive determinations using 11 MeV protons for Zr, Mo, and Cd in high purity glass was investigated. Zirconium can be determined nondestructively and analytical results are presented and discussed. The estimated detection limit for the nondestructive zirconium determination is 0.001 ppm using a 12 [micro]A-hour irradiation.
Kormali, Suphi Mehmet (1973). Charged particle activation analysis applied to medium Z elements. Doctoral dissertation, Texas A&M University. Texas A&M University. Libraries. Available electronically from
https : / /hdl .handle .net /1969 .1 /DISSERTATIONS -156812.