The quantitative analysis of sets of multicomponent time dependent spectra from decay of radionuclides

Radiochemical analysis :

“…The 1. 6 MeV peak of chlorine-38 was used for the analysis by comparing the counts per unit time (after subtracting background) of the sample and standards under identical counting conditions. 3.…”

“…figure 31 and photograph in figure 32) consists of (l) a speaker magnet, (2) two flexure plates,, (3) a linear velocity transducer coil, (4) two push rods, (5) the lamp and photocell housing, (6) a linear velocity transducer core (LV Syn Core), (7) a speaker coil, (8) the slit system, (9) an alinement tube, (10) figure 33 Figure 33. The main frame of the Doppler Drive (1) to produce a -20 volt output to inhibit the analyzer from storing when a spring loaded switch on the front panel is momentarily depressed downward, (2) to light an indicator lamp when the analyzer is not storing, (3) to produce a zero volt output which, in turn, allows the analyzer to store after the first address reset pulse arrives when the springloaded switch is held in the upwards position, (4) to produce a gated address reset pulse that can be counted by a scaler when the analyzer is storing, (5) to be able to inhibit the analyzer from storing when a preset count is reached by the scaler, (6) to amplify the voltage-to-frequency converter three volt output to ten volts so that it can be stored by the analyzer, (7) to invert the positive output of our single [20] has been prepared which has a line width which is nearly theoretical and which has a large recoilless fraction at room temperature. )urce had a radioac 119m 119m The Sn^used to make the source had a radioactivity of 2.0 mCi and a radiochemical purity of 9o%.…”

Modern trends in activations analysis vol. 2

“…It is also obvious that the (y,d) reaction will be more probable at low energies than the (y,pn) and vice versa at high energies since particle emission dominates in the former case and the quasi-deuteron effect in the latter. This is illustrated in Figure 12, where (y,d) and (y,pn) cross sections for 64 Zn and 66 Zn are given as measured by Goldenberg and Marquez [44]. Excellent reviews of photonuclear cross sections are available [36,45].…”

“…The use of an internal standard as recommended by Albert et al [66] and by Hoste et al [67] or a comparison with standards and flux normalization as recommended by Kuin [68], allows the use of the full beam intensity, but of course it is also limited by the fact that standards are required.…”

“…Figure 1 2. The (y,d) and (y,pn) reaction cross sections for the isotopes 64 Zn and 66 Zn, as a function of gamma energy.…”