Intermediate structure in the photoneutron and photofission cross sections in 238U and 232Th

Mafra, O.Y.; Kuniyoshi, Shigekazu; Goldemberg, José

doi:10.1016/0375-9474(72)90128-5

Cited by 46 publications

(15 citation statements)

References 11 publications

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“…49 Mo(n,2n) 99 Mo reaction available in the literature , and the TENDL-2017 evaluation. Ikeda et al [177] contains three versions of the data measured on the basis of different beam-monitor reactions, and these are labelled 238 U(c,f) 99 Mo While there are no directly measured experimental data for the 238 U(c,f) 99 Mo reaction, thirteen experimental datasets were found in the literature for the total photofission cross section [183][184][185][186][187][188][189][190][191][192][193][194][195], as shown in Fig. 50.…”

Section: Momentioning

confidence: 99%

“…Three datasets were rejected [183,184,186] because of their disagreement with all other equivalent data. Data points from both Ref.…”

Section: Momentioning

confidence: 99%

“…51 (L = 17, Fig. 50 Experimental datasets for the 238 U(c,f) reaction available in the literature [183][184][185][186][187][188][189][190][191][192][193][194][195], and the Varlamov-Peskov (2007) evaluation [196] Data for the neutron-induced reaction on 238 U are most frequently used to estimate the cumulative photofission yield of 99 Mo. Such data are available in all of the national and international data libraries, but their accuracy is not high.…”

Section: Momentioning

confidence: 99%

“…Both methods of presentation contain recommended cross-section data and the corresponding deduced yields. A second IAEA CRP was launched in 2003 to cover the production routes for established ( 103 Pd, 186 Re and 192 Ir) and emerging therapeutic radionuclides ( 64 Cu, 67 Cu,67 Ga, 86 Y, 111 In, 114m In, 124 I, 125 I, 169 Yb, 177 Lu,211 At and 225 Ac) totalling thirty-five reactions [7].…”

Section: Introductionmentioning

confidence: 99%

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Recommended nuclear data for medical radioisotope production: diagnostic gamma emitters

Tárkányi

Ignatyuk

Hermanne

et al. 2018

J Radioanal Nucl Chem

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An extensive series of evaluations have been performed as part of an IAEA coordinated research project to study a set of nuclear reactions that produce the diagnostic gamma-ray emitting radionuclides 51 Cr, 99m Tc, 111 In, 123 I and 201 Tl. Recommended cross-section data in the form of excitation functions have been derived, along with quantifications of their uncertainties. These evaluations involved the compilation of all previously published values and newly measured experimental data, followed by critical assessments and selection of those experimental datasets and accompanying uncertainties judged to be fully valid and statistically consistent for model-independent least-squares fitting by means of Padé approximations. Integral yields as a function of the energy were also calculated on the basis of the recommended cross sections deduced from these various fits. All evaluated numerical results and their corresponding uncertainties are available online at www-nds.iaea.org/medical/gamma_emitters.html and also on the medical portal of the International Atomic Energy Agency/Nuclear Data Section (IAEA-NDS) www-nds.iaea.org/medportal/.

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Section: Momentioning

confidence: 99%

“…Three datasets were rejected [183,184,186] because of their disagreement with all other equivalent data. Data points from both Ref.…”

Section: Momentioning

confidence: 99%

Section: Momentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Recommended nuclear data for medical radioisotope production: diagnostic gamma emitters

Tárkányi

Ignatyuk

Hermanne

et al. 2018

J Radioanal Nucl Chem

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“…Hence, the photon spectrum was measured directly and was unfolded from the yield curves to obtain the cross-sections. Figures 9 and 10 show the data of Manfrenidi et al, 23 Mafra et al 24 who employed the same method as Khan and Knowles 22 and Fig. 11 shows data of Andrel et al, 25 Caldwell et al 26 who employed neutron-capture γ-rays as the photon source.…”

Section: Anisotropy Calculationsmentioning

confidence: 99%

MEASUREMENT OF PHOTOFISSION CROSS-SECTION OF²³⁸UUSING MICROTRON FACILITY

Prakash

Sanjeev

Kumar

et al. 2011

Int. J. Mod. Phys. E

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Photofission cross-section of 238 U was measured using bremsstrahlung radiation energy 7.4-9.0 MeV with energy step of 0.4 MeV by employing Lexan polycarbonate film as solid state nuclear track detector (SSNTD). The photon intensity from the Microtron accelerator at a distance of 15 cm from the bremsstrahlung converter (tantalum target) facility was estimated to be 10 10 photons/sec using the code EGS-4. In this paper, details of the fission fragment angular distribution measurements of 238 U target using Lexan polycarbonate have been discussed. The photofission cross-section was calculated using the angular distribution of fission fragments and the results were compared with those obtained using the code EMPIRE-II and various barrier parameters of the RIPL-1, RIPL-2 libraries and with the new analytical fission barrier formula based on the Hugenholtz-Van Hove theorem. The present experimental measurements were in good agreement with the results obtained from the Empire-II code predictions for potential parameter taken from RIPL-1 and a newly developed analytical fission barrier formula.

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Measurement of Γn/Γf from Photofission of 238U with Neutron Capture γ Rays

Wolf¹

1979

Neutron Capture Gamma-Ray Spectroscopy

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Intermediate structure in the photoneutron and photofission cross sections in 238U and 232Th

Cited by 46 publications

References 11 publications

Recommended nuclear data for medical radioisotope production: diagnostic gamma emitters

Recommended nuclear data for medical radioisotope production: diagnostic gamma emitters

MEASUREMENT OF PHOTOFISSION CROSS-SECTION OF²³⁸UUSING MICROTRON FACILITY

Measurement of Γn/Γf from Photofission of 238U with Neutron Capture γ Rays

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Intermediate structure in the photoneutron and photofission cross sections in 238U and 232Th

Cited by 46 publications

References 11 publications

Recommended nuclear data for medical radioisotope production: diagnostic gamma emitters

Recommended nuclear data for medical radioisotope production: diagnostic gamma emitters

MEASUREMENT OF PHOTOFISSION CROSS-SECTION OF238UUSING MICROTRON FACILITY

Measurement of Γn/Γf from Photofission of 238U with Neutron Capture γ Rays

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MEASUREMENT OF PHOTOFISSION CROSS-SECTION OF²³⁸UUSING MICROTRON FACILITY