Experimental measurements and theoretical calculations for proton, deuteron and α-particle induced nuclear reactions on calcium: special relevance to the production of 43,44Sc

Al-Abyad, M.; Mohamed, Gehan Y.; Hassan, H. E.; Takács, S.; Ditrói, F.

doi:10.1007/s10967-018-5733-4

Cited by 25 publications

(11 citation statements)

References 33 publications

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“…A general agreement is observed for 44g Sc (Figure 2), both with the theoretical models and experimental results, although again the data by [34] are lower than the measurements. More discrepancies are observed in the case of 44m Sc (Figure 3).…”

Section: Resultssupporting

confidence: 82%

“…Since the mentioned paper does not provide the recommended TTY fit function, we adopted ours. In the case of 43 Sc data (Figure 1), the recent experimental results [34] are significantly lower than other measurements (by a factor of 2 around 10 MeV proton energy). The experimental results for TTY are quite linear in the measured proton energy range and do not reach the expected saturation, so the resulting excitation function is relatively flat and does not reproduce any of the previous measurements.…”

Section: Resultscontrasting

confidence: 59%

“…In Figures 1-5, we show the TTY data and the reconstructed cross-sections for 43 Ca(p,n) 43 Sc,44 Ca(p,n) 44g Sc, 44 Ca(p,n) 44m Sc, 48 Ca(p,2n) 47 Sc and 48 Ca(p,n) 48 Sc reactions (the fit parameters are shown in Table 2 while the reconstructed cross-section values are listed in Table 3). We compare them with the experimental cross-section in [26][27][28][29][30][31][32][33][34][35], with the recommended values from [36], with the predictions of the EMPIRE [37] evaporation code (version 3.2.2 Malta) and with the TENDL-2017 cross-section library [38]. All reconstructions exhibit a similar shape to the model predictions and measured cross-section values, indicating the validity of modified q-Weibull distribution in estimating the global shape of the (p,n) and (p,2n) excitation functions.…”

Section: Resultsmentioning

confidence: 99%

“…43 Sc cross-section (bottom) based on the fit to TTY data on 43 CaCO3 enriched in 90% 43 Ca (top). The cross-section data points are taken from [26,31,33,34]. 47 Sc cross-section (bottom) based on the fit to TTY data on 48 CaCO3 enriched in 97.1% 48 Ca (top).…”

Section: Instruments 2019 X X For Peer Review 4 Of 10mentioning

confidence: 99%

“…Reconstruction of 44 Ca(p,n) 44g Sc cross-section (bottom) based on the fit to TTY data on 44 CaCO 3 enriched in 94.8% 44 Ca (top). The cross-section data points are taken from[26,29,[31][32][33][34]36].…”

mentioning

confidence: 99%

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Can We Extract Production Cross-Sections from Thick Target Yield Measurements? A Case Study Using Scandium Radioisotopes

et al. 2019

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In this work, we present an attempt to estimate the reaction excitation function based on the measurements of thick target yield. We fit a function to experimental data points and then use three fitting parameters to calculate the cross-section. We applied our approach to 43Ca(p,n)43Sc, 44Ca(p,n)44gSc, 44Ca(p,n)44mSc, 48Ca(p,2n)47Sc and 48Ca(p,n)48Sc reactions. A general agreement was observed between the reconstructions and the available cross-section data. The algorithm described here can be used to roughly estimate cross-section values, but it requires improvements.

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Section: Resultssupporting

confidence: 82%

Section: Resultscontrasting

confidence: 59%

Section: Resultsmentioning

confidence: 99%

Section: Instruments 2019 X X For Peer Review 4 Of 10mentioning

confidence: 99%

mentioning

confidence: 99%

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Can We Extract Production Cross-Sections from Thick Target Yield Measurements? A Case Study Using Scandium Radioisotopes

et al. 2019

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New developments in the production of theranostic pairs of radionuclides

Qaim

Schölten

Neumaier

2018

J Radioanal Nucl Chem

119

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A brief historical background of the development of the theranostic approach in nuclear medicine is given and seven theranostic pairs of radionuclides, namely 44g Sc/ 47 Sc, 64 Cu/ 67 Cu, 83 Sr/ 90 Sr, 86 Y/ 90 Y, 124 I/ 131 I, 152 Tb/ 161 Tb and 152 Tb/ 149 Tb, are considered. The first six pairs consist of a positron and a β −-emitter whereas the seventh pair consists of a positron and an α-particle emitter. The decay properties of all those radionuclides are briefly mentioned and their production methodologies are discussed. The positron emitters 64 Cu, 86 Y and 124 I are commonly produced in sufficient quantities via the (p,n) reaction on the respective highly enriched target isotope. A clinical scale production of the positron emitter 44g Sc has been achieved via the generator route as well as via the (p,n) reaction, but further development work is necessary. The positron emitters 83 Sr and 152 Tb are under development. Among the therapeutic radionuclides, 89 Sr, 90 Y and 131 I are commercially available and 161 Tb can also be produced in sufficient quantity at a nuclear reactor. Great efforts are presently underway to produce 47 Sc and 67 Cu via neutron, photon and charged particle induced reactions. The radionuclide 149 Tb is unique because it is an α-particle emitter. The present method of production of 152 Tb and 149 Tb involves the use of the spallation process in combination with an on-line mass separator. The role of some emerging irradiation facilities in the production of special radionuclides is discussed.

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