Étude du dosage de Ti, V, Cr, Fe, Ni, Cu et Zn par activation avec des protons d'énergie limitée a 20 MeV

Barrandon, Jean-Noël; Debrun, J.L.; Köhn, A.

doi:10.1016/0029-554x(75)90499-1

Cited by 87 publications

(47 citation statements)

References 4 publications

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“…Furthermore the assessed data for the nat Cr( p, pxn) 49,51 Cr reactions are also in agreement with published cross sections [7]. [24] in the proton energy region from 17.5 to 20 MeV differ largely from the newly measured cross sections. The same trend is again found for the nat Cr( p, xn) 52m Mn reaction described in the previous section.…”

Section: 4951 Cr and 48 V Cross Sectionssupporting

confidence: 78%

“…Only two data points at 9.6 MeV and 13.8 MeV, respectively, appear to be too high. An exception from the agreement are the data for 52m Mn from Barrandon et al [24] whose divergence is discussed in more detail later on. Smaller deviations can be attributed to the uncertainties which generally influence cross section measurements.…”

Section: Gm Mn Cross Sectionsmentioning

confidence: 45%

“…However, due to some contradictions in the published data, e.g. for the formation of 51 Cr [7,24] verification and extension of all the measured data appeared mandatory.…”

Section: Present Literature and New Experimental Resultsmentioning

confidence: 99%

“…There are several publications regarding its production. Some of them are outdated (1962/1975) [23,24], because more exact decay or γ -ray intensity data were published later. These are directly linked to the calculation of cross sections and thick target yields by means of the activation formula.…”

Section: Present Literature and New Experimental Resultsmentioning

confidence: 99%

“…They are also shown in Figs. 2-7 as a function of the proton energy, together with the corresponding literature data [7,[23][24][25][26][27][28][29]. For direct comparison the literature cross section data measured on enriched target materials given in the figures were converted to the natural abundance of the respective chromium isotope (see Table 3).…”

Section: Present Literature and New Experimental Resultsmentioning

confidence: 99%

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Cross-section measurements for the formation of manganese-52 and its isolation with a non-hazardous eluent

et al. 2013

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Nuclear reaction / Cross section / Thick target yield / Integral yield / Separation of positron emitter52 Mn / Ion exchange chromatography Summary. With respect to the production of no-carrieradded 52 Mn nuclear reactions on natural chromium were investigated. Cross sections of the reactions nat Cr( p, x) 48 V, 48,49,51 Cr, 52g,m Mn were determined in the proton energy range of 7.6 to 45 MeV. Additionally, production yields of 52g,m Mn and 51 Cr were measured in the energy range from 8.2 to 16.9 MeV and therefrom the calculated saturation thick target yields were obtained as (2.55 ± 0.31), (6.96 ± 0.57), and (1.53 ± 0.15) GBq/μA, respectively.For in vivo applications like PET, low toxicity is critical and sufficient activity of a radiolabelled compound mandatory. Thus, additional purification steps after separation of radionuclides and target materials have to be avoided. However, no isolation procedure has been reported in the literature so far where radiomanganese is directly obtained in a nonhazardous solution. Therefore a new separation procedure was developed utilizing the cation-exchange resin DOWEX 50W×8 (H + -form). 52g Mn was quantitatively isolated from "bulk" chromium after 3 to 4 h in non-hazardous 0.067 M ammonium citrate solution. Up to 99% of 52g Mn activity was harvested within 10 to 15 mL eluent solution with no measureable 51 Cr impurities.

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Section: 4951 Cr and 48 V Cross Sectionssupporting

confidence: 78%

Section: Gm Mn Cross Sectionsmentioning

confidence: 45%

“…However, due to some contradictions in the published data, e.g. for the formation of 51 Cr [7,24] verification and extension of all the measured data appeared mandatory.…”

Section: Present Literature and New Experimental Resultsmentioning

confidence: 99%

Section: Present Literature and New Experimental Resultsmentioning

confidence: 99%