Study of proton induced reactions on niobium targets up to 70MeV

Ditrói, F.; Takács, S.; Tárkányi, F.; Baba, Mamoru; Corniani, Enrico; Shubin, Yu.N.

doi:10.1016/j.nimb.2008.09.023

Cited by 22 publications

(12 citation statements)

References 24 publications

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“…Moreover, our results were against other literature data. Ditrói et al (2008) reported the 934.53 keV gamma ray energy of 92m Nb nucleus, while Rizvi et al (2012) gave this energy as 934 keV, and Naik et al (2013) showed as 934.46 keV. It can be said that our results are in agreement with both NuDat database and the results of the previous work.…”

Section: Resultssupporting

confidence: 91%

Using a clinical linac to determine the energy levels of 92mNb via the photonuclear reaction

Aygun

Cesur

Doğru

et al. 2016

Applied Radiation and Isotopes

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Section: Resultssupporting

confidence: 91%

Using a clinical linac to determine the energy levels of 92mNb via the photonuclear reaction

Aygun

Cesur

Doğru

et al. 2016

Applied Radiation and Isotopes

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“…The six experimental datasets available in the literature are shown in Fig. 115 [82,249,[259][260][261][262] together with the TENDL calculations. All datasets were used in the statistical fitting procedure.…”

Section: Nb(px) 90 Nbmentioning

confidence: 99%

“…Fig. 115 Six experimental datasets for the 93 Nb(p,x) 90 Nb reaction available in the literature [82,249,[259][260][261][262], and TENDL calculations 1 3 Fig. 116 Six experimental datasets for the 93 Nb(p,x) 90 Nb reaction [82,249,[259][260][261][262] with the Padé fit (L = 9, N = 94, χ 2 = 3.18, solid line) and estimated total uncertainties in percentages, including 4% systematic uncertainty (dashed line, right-hand scale)…”

Section: Nb(px) 90 Nbmentioning

confidence: 99%

Recommended nuclear data for medical radioisotope production: diagnostic positron emitters

Tárkányi

Ignatyuk

Hermanne

et al. 2019

J Radioanal Nucl Chem

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An IAEA coordinated research project that began in 2012 and ended in 2016 was primarily dedicated to the compilation, evaluation and recommendation of cross-section data for the production of medical radionuclides. One significant part of this work focused on diagnostic positron emitters. These particular studies consist of 69 reactions for direct and indirect or generator production of 44 Sc(44 Ti), 52m Mn(52 Fe), 52g Mn, 55 Co, 61 Cu, 62 Cu(62 Zn), 66 Ga, 68 Ga(68 Ge), 72 As(72 Se), 73 Se, 76 Br, 82 Rb(82 Sr), 82m Rb, 86 Y, 89 Zr, 90 Nb, 94m Tc, 110m In(110 Sn), 118 Sb(118 Te), 120 I, 122 I(122 Xe), 128 Cs(128 Ba), and 140 Pr(140 Nd) medical radionuclides. The resulting reference cross-section data were obtained from Padé fits to selected and corrected experimental data, and integral thick target yields were subsequently deduced. Uncertainties in the fitted results were estimated via a Padé least-squares method with the addition of a 4% assessed systematic uncertainty. Experimental data were also compared with theoretical predictions available from the TENDL-2015 and TENDL-2017 libraries. All of the numerical reference cross-section data with their corresponding uncertainties and deduced integral thick target yields are available on-line at the IAEA-NDS medical portal www-nds.iaea.org/medic alpor tal and also at the IAEA-NDS web page www-nds.iaea.org/ medic al/posit ron_emitt ers.html.

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“…Figures of the cross sections measured in this work are presented here, in comparison with literature data [16,26,50,61,63,[93][94][95][96][97][98][99][100][101][102][103][104][105][106][107][108], the TENDL-2015 data library [70], and the reaction modeling codes CoH-3.5.1, EMPIRE-3.2.3, and TALYS-1.8 [66,70,72].…”

Section: Appendixb Measured Excitation Functionsmentioning

confidence: 99%

Excitation functions for (p,x) reactions of niobium in the energy range of Ep = 40–90 MeV

Voyles

Bernstein

Birnbaum

et al. 2018

Nuclear Instruments and Methods in Physics Research Section B:

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A stack of thin Nb foils was irradiated with the 100 MeV proton beam at Los Alamos National Laboratory's Isotope Production Facility, to investigate the 93 Nb(p,4n) 90 Mo nuclear reaction as a monitor for intermediate energy proton experiments and to benchmark state-of-the-art reaction model codes. A set of 38 measured cross sections for nat Nb(p,x) and nat Cu(p,x) reactions between 40-90 MeV, as well as 5 independent measurements of isomer branching ratios, are reported. These are useful in medical and basic science radionuclide productions at intermediate energies. The nat Cu(p,x) 56 Co, nat Cu(p,x) 62 Zn, and nat Cu(p,x) 65 Zn reactions were used to determine proton fluence, and all activities were quantified using HPGe spectrometry. Variance minimization techniques were employed to reduce systematic uncertainties in proton energy and fluence, improving the reliability of these measurements. The measured cross sections are shown to be in excellent agreement with literature values, and have been measured with improved precision compared with previous measurements. This work also reports the first measurement of the nat Nb(p,x) 82m Rb reaction, and of the independent cross sections for nat Cu(p,x) 52g Mn and nat Nb(p,x) 85g Y in the 40-90 MeV region. The effects of nat Si(p,x) 22,24 Na contamination, arising from silicone adhesive in the Kapton tape used to encapsulate the aluminum monitor foils, is also discussed as a cautionary note to future stacked-target cross section measurements. A priori predictions of the reaction modeling codes CoH, EMPIRE, and TALYS are compared with experimentally measured values and used to explore the differences between codes for the nat Nb(p,x) and nat Cu(p,x) reactions. 2 68 Ga, 82 Rb, and 123 I. These accelerators also produce non-medical radionuclides with commercial value, such as 22 Na, 73 As, 95m Tc, and 109 Cd [3,4]. Novel applications are being explored for several radionuclides whose production methodologies are not established, but their production requires accurate, high-fidelity cross section data. Candidate isotopes to meet these needs have been identified based on their chemical and radioactive decay properties [2,5,6], and a series of campaigns are underway to perform targeted, high-priority measurements of thin-target cross sections and thick-target integral yields. These studies will serve to facilitate the production of clinically relevant quantities of radioactivity.Accurate cross section measurements using activation methods benefit from well-characterized monitor reactions. Currently there is a paucity of such data at intermediate energies, and much of what exists have high uncertainties (>15%). Indeed, the development of new monitor reaction standards and the improved evaluation of existing standards is one of the areas of greatest cross-cutting need for nuclear data [6]. New reactions can expand the available range of options for the monitoring of charged particle beams. This work is an attempt to characterize a new monitor reaction for proton beams in exce...

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Study of proton induced reactions on niobium targets up to 70MeV

Cited by 22 publications

References 24 publications

Using a clinical linac to determine the energy levels of 92mNb via the photonuclear reaction

Using a clinical linac to determine the energy levels of 92mNb via the photonuclear reaction

Recommended nuclear data for medical radioisotope production: diagnostic positron emitters

Excitation functions for (p,x) reactions of niobium in the energy range of Ep = 40–90 MeV

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Study of proton induced reactions on niobium targets up to 70MeV

Cited by 22 publications

References 24 publications

Using a clinical linac to determine the energy levels of 92mNb via the photonuclear reaction

Using a clinical linac to determine the energy levels of 92mNb via the photonuclear reaction

Recommended nuclear data for medical radioisotope production: diagnostic positron emitters

Excitation functions for (p,x) reactions of niobium in the energy range of Ep = 40–90 MeV

Contact Info

Product

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Excitation functions for (p,x) reactions of niobium in the energy range of Ep = 40–90 MeV