Isomeric ratios of the yields of photonuclear reactions for gamma-activation analysis

Measurement of isomeric yield ratios in natIn and natSn with 50, 60, and 70 MeV bremsstrahlung photons

“…There are several measured isomeric yield ratios of 117m,g In from the 118 Sn(c,p) 117m,g In reaction for the end point energies of bremsstrahlung photons below 50 MeV [16,[18][19][20][21][22][23]. Bilow et al [24] measured the isomeric yield ratios of 118 Sn(c,p) 117m,g In reaction at 75, 100, 120, 800 MeV of the bremsstrahlung photons.…”

“…[16][17][18][19][20][21][22][23][24][25] in the wide energy range found in the literature are given in Table 3. The total uncertainties in Table 3 consist of two parts listed in Table 4: one is the uncertainty related to the measurement which is calculated from Eq.…”

“…The most recent investigation of the IR of 112m,g In was conducted by Demekhina et al [18] with 30 MeV bremsstrahlung. IR of 117m,g In form 118 Sn was measured with bremsstrahlung by several authors [16,[18][19][20][21][22][23][24][25].…”

Measurement of isomeric yield ratios of 86m,g Y, 87m,g Y, and 89m,g Zr in the photonuclear reactions of 89 Y and nat Zr at the end-point bremsstrahlung energies of 45 and 55 MeV

“…(2) based on the measured activity of the meta-stable state by using the 587.8 keV photopeak and that of the ground state by using the 909.1 keV photopeak. The measured values of IR at the end-point bremsstrahlung energies of 45 and 55 MeV together with the available literature data [5,18,20,22,24,25,[27][28][29] are listed in Table 2 and also plotted in Fig. 5.…”

“…Watson et al [21] measured the isomeric yield ratios of 87m,g Y in the 89 Y(c,2n) reactions with the end-point bremsstrahlung energies of 23-50 MeV. Davydov et al measured the isomeric yield ratios of 89m,g Zr in the 90 Zr(c,n) reaction and that for 87m,g Y in the 89 Y(c,2n) reaction with maximum photon energies from 21.5 to 24.5 MeV [22] and from 21.75 to 26.5 MeV [23,24], respectively. Luc et al measured the isomeric yield ratios of 89m,g Zr in the end-point bremsstrahlung energy of 15-20 MeV [25].…”