Excitation Functions of α-Particle Induced Nuclear Reactions on Highly Enriched <sup>92</sup>Mo: Comparative Evaluation of Production Routes for <sup>94m</sup>Tc

Denzler, F.-O.; Rösch, Frank; Qaim, S.M.

doi:10.1524/ract.1995.68.1.13

Cited by 41 publications

(16 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The individual errors considered were approximately the same as described earlier [9]. The typical overall errors were 15-40%, the highest errors being in the vicinity of the reaction thresholds and steeply increasing parts of the monitor excitation function.…”

Section: Calculation Of Cross Sections and Errorsmentioning

confidence: 83%

See 1 more Smart Citation

Excitation Functions of α- and ³He-Particle Induced Nuclear Reactions on Highly Enriched ¹⁴⁴Sm and ¹⁴⁷Sm: Comparative Evaluation of Production Routes for ¹⁴⁷Gd

1995

Self Cite

View full text Add to dashboard Cite

Excitation functions were measured by the stacked-foil technique for the ,47 Sm( 3 He,xn)-processes over the energy range of 12 to 37 MeV, and the 144 Sm(a,xn)-reactions over the energy range of 12 to 27 MeV. Thin samples of 96.5% enriched ,47 Sm 2 0 3 or 86.6% enriched ,44 Sm 2 0, of 10 mm diameter and 2-5 mg/cm 2 thickness were prepared via a sedimentation method. Thick target yields of l47 Gd were calculated from the measured excitation functions and the levels of radiogadolinium impurities were determined experimentally. The optimum energy range for the production of ,47 Gd via the 144 Sm( 3 He,3n)-process was found to be E 3a¡ = 36->13 MeV and via the 14? Sm(«,n)reaction as E a = 27->13 MeV. The expected thick target yield of ,47 Gd over the optimum energy range is 9.5 MBq/μΑΙι for the 'He-induced reaction and 4.6 MBq/μΑΙι for the α-induced reaction.

show abstract

Section: Calculation Of Cross Sections and Errorsmentioning

confidence: 83%

“…Thin samples of enriched 144 Sm 2 0 3 and ,47 Sm 2 0 3 were prepared by means of a special sedimentation method [8,9]. In brief, a suspension of very fine 144 147 Sm 2 0 3 powder in benzene was prepared by mixing and stirring.…”

Section: Sample Preparationmentioning

confidence: 99%

Excitation Functions of α- and ³He-Particle Induced Nuclear Reactions on Highly Enriched ¹⁴⁴Sm and ¹⁴⁷Sm: Comparative Evaluation of Production Routes for ¹⁴⁷Gd

1995

Self Cite

View full text Add to dashboard Cite

show abstract

“…Separation of nca 93,94,95,96,99m Tc from bulk natural Mo and Nb targets were also carried out with the help of LLX using TOA diluted in cyclohexane as organic phase in combination with HCl and HNO 3 as aqueous phase [24,25]. Apart from these, thermochromatographic separation technique has also been explored to separate 93,93m,94,94m,95,95m Tc from natural Nb and 92 Mo targets [4,6].…”

Section: Introductionmentioning

confidence: 99%

Production and separation of no-carrier-added ^93,94,95Tc from ⁹Be activated yttrium target

Maiti

Lahiri²

2009

Radiochimica Acta

View full text Add to dashboard Cite

9 Be induced nuclear reaction / Stacked-foil technique / Proton rich / 93,94,95 Tc / Production yield / Liquid-liquid extraction / Solid-liquid extraction Summary. Proton rich Tc radionuclides have been produced for the first time through 89 Y( 9 Be, xn) 93,94,95 Tc reactions. In order to optimize the yield of a particular radionuclide of choice, batch yield of 93 Tc, 94 Tc and 95 Tc have been measured at different incident energies using stacked-foil technique followed by off-line γ -spectrometry. No-carrier-added (nca) 93,94,95 Tc radionuclides have been separated from bulk yttrium by liquid-liquid extraction (LLX) and solid-liquid extraction (SLX) techniques. Trioctylamine (TOA) diluted in cyclohexane was used as liquid anion exchanger in LLX in presence of HCl. SLX was carried out using cation and anion exchanger resin, DOWEX-50 and DOWEX-1, respectively, in HCl medium.

show abstract

“…It is noteworthy to mention that earlier the Jülich group had also successfully utilized the indirect method for production of 94m Tc. An enriched 92 Mo target was irradiated with 28 MeV α-particles and the resulting 94 Ru produced via the 92 Mo(α, 2n) 94 Ru was separated via thermochromatography [65]. Thereafter the decay product 94m Tc was isolated from the parent 94 Ru, and was found to be quite pure.…”

Section: Technetiummentioning

confidence: 99%

Recent developments in nuclear data measurements and chemical separation methods in accelerator production of astatine and technetium radionuclides

Lahiri¹,

Maiti

2012

Ract

View full text Add to dashboard Cite

The cyclotron produced neutron deficient technetium radionuclides (93Tc, 94(m+g)Tc, 95Tc, 96Tc) have gained renewed interest in various fields, including nuclear imaging, provided they can be obtained in a pure form. Similarly, 211At due to its moderate half-life and high intensity α-particle energy (both from 211At as well as its transient decay product 211Po) is of prime interest in targeted therapy. Another interest is to study the astatine chemistry, which is least studied compared to other halogens due to its non-occurrence in natural systems. For maximum production of these radionuclides various parameters need to be standardized. A chemical separation is required to achieve high radiochemical purity before in-vivo application. This review describes various production routes of neutron deficient astatine and technetium radionuclides that have been reported after the year 2000. The analytical chemistry developed for separation of no-carrier-added (nca) Tc and At radionuclides in the same period is also discussed in detail.

show abstract

Excitation Functions of α-Particle Induced Nuclear Reactions on Highly Enriched ⁹²Mo: Comparative Evaluation of Production Routes for ^94mTc

Cited by 41 publications

References 0 publications

Excitation Functions of α- and ³He-Particle Induced Nuclear Reactions on Highly Enriched ¹⁴⁴Sm and ¹⁴⁷Sm: Comparative Evaluation of Production Routes for ¹⁴⁷Gd

Excitation Functions of α- and ³He-Particle Induced Nuclear Reactions on Highly Enriched ¹⁴⁴Sm and ¹⁴⁷Sm: Comparative Evaluation of Production Routes for ¹⁴⁷Gd

Production and separation of no-carrier-added ^93,94,95Tc from ⁹Be activated yttrium target

Recent developments in nuclear data measurements and chemical separation methods in accelerator production of astatine and technetium radionuclides

Contact Info

Product

Resources

About

Excitation Functions of α-Particle Induced Nuclear Reactions on Highly Enriched 92Mo: Comparative Evaluation of Production Routes for 94mTc

Cited by 41 publications

References 0 publications

Excitation Functions of α- and 3He-Particle Induced Nuclear Reactions on Highly Enriched 144Sm and 147Sm: Comparative Evaluation of Production Routes for 147Gd

Excitation Functions of α- and 3He-Particle Induced Nuclear Reactions on Highly Enriched 144Sm and 147Sm: Comparative Evaluation of Production Routes for 147Gd

Production and separation of no-carrier-added 93,94,95Tc from 9Be activated yttrium target

Recent developments in nuclear data measurements and chemical separation methods in accelerator production of astatine and technetium radionuclides

Contact Info

Product

Resources

About

Excitation Functions of α-Particle Induced Nuclear Reactions on Highly Enriched ⁹²Mo: Comparative Evaluation of Production Routes for ^94mTc

Excitation Functions of α- and ³He-Particle Induced Nuclear Reactions on Highly Enriched ¹⁴⁴Sm and ¹⁴⁷Sm: Comparative Evaluation of Production Routes for ¹⁴⁷Gd

Excitation Functions of α- and ³He-Particle Induced Nuclear Reactions on Highly Enriched ¹⁴⁴Sm and ¹⁴⁷Sm: Comparative Evaluation of Production Routes for ¹⁴⁷Gd

Production and separation of no-carrier-added ^93,94,95Tc from ⁹Be activated yttrium target