Database of prompt gamma rays from slow neutron capture forelemental analysis

Firestone, R. B.; Choi, H.D.; Lindstrom, Richard M.; Molnár, Gábor; Mughabghab, S.F.; Paviotti-Corcuera, R.; Révay, Zs.; Trkov, A.; Zhou, Caijin; Zerkin, V.

doi:10.2172/882898

Cited by 73 publications

(75 citation statements)

References 27 publications

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“…The database of ≈35,000 neutron capture γ-rays has been published as an IAEA TECDOC with accompanying CD-ROM [8]. The TECDOC includes discussions of neutron capture terminology, Westcott g-factors, characteristics of PGAA facilities, results of CRP benchmark experiments, and total radiative neutron capture cross sections and neutron separation energies.…”

Section: Iaea Tecdoc and The Egaf Databasementioning

confidence: 99%

“…Notable examples include the analysis of deep sea vent [18] and reagent materials [19]. Total radiative cross sections were determined for most isotopes [8,20]. This work has contributed to a new evaluation of the 238 U total radiative cross section [22].…”

Section: Applications Of the Egaf Databasementioning

confidence: 99%

“…An International Atomic Energy Agency (IAEA) Coordinated Research Project (CRP) was organized to evaluate these data. The IAEA CRP produced a database of ≈35,000 neutron capture γ-rays [8] which has been named the Evaluated Gamma-ray Activation File (EGAF) [9]. In this paper we will discuss the Budapest measurements, evaluation of the EGAF database, and recent developments in EGAF analysis.…”

Section: Introductionmentioning

confidence: 99%

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The Evaluated Gamma-ray Activation File (EGAF)

Firestone

Molnár

Révay

et al. 2006

AIP Conference Proceedings

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Abstract. The Evaluated Gamma-ray Activation File (EGAF), a new database of prompt and delayed neutron capture γ ray cross sections, has been prepared as part of an International Atomic Energy Agency (IAEA) Coordinated Research Project to develop a "Database of Prompt Gamma-rays from Slow Neutron Capture for Elemental Analysis". Recent elemental γ-ray cross-section measurements performed with the guided neutron beam at the Budapest Reactor have been combined with data from the literature to produce the EGAF database. EGAF contains thermal cross sections for ≈35,000 prompt and delayed γ-rays from 262 isotopes. New precise total thermal radiative cross sections have been derived for many isotopes from the primary and secondary gamma-ray cross sections and additional level scheme data. An IAEA TECDOC describing the EGAF evaluation and tabulating the most prominent γ-rays will be published in 2004. The TECDOC will include a CD-ROM containing the EGAF database in both ENSDF and tabular formats with an interactive viewer for searching and displaying the data.

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Section: Iaea Tecdoc and The Egaf Databasementioning

confidence: 99%

Section: Applications Of the Egaf Databasementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Evaluated Gamma-ray Activation File (EGAF)

Firestone

Molnár

Révay

et al. 2006

AIP Conference Proceedings

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“…Calculations of interaction of neutrons with the Gd converter have been carried out using the GEANT4 simulation codes with GEANT4 neutron data library 3.13, which comes largely from the ENDF/B-VI crosssection library, photon evaporation 2.0 data base, which comes from the Evaluated Nuclear Structure Data File (ENSDF) and Geant4 low-energy electromagnetic models based on Livermore library [12][13]. The energy of the thermal neutron is 25 meV.…”

Section: Methodsmentioning

confidence: 99%

Semiconductor Thermal Neutron Detector

Aoki

Miyake

Nakano

et al. 2014

MST

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The CdTe and GaN detector with a Gd converter have been developed and investigated as a neutron detector for neutron imaging. The fabricated Gd/CdTe detector with the 25 mm thick Gd was designed on the basis of simulation results of thermal neutron detection efficiency and spatial resolution. The Gd/CdTe detector shows the detection of neutron capture gamma ray emission in the 155 Gd(n, g) 156 Gd, 157 Gd(n, g) 158 Gd and 113 Cd(n, g) 114 Cd reactions and characteristic X-ray emissions due to conversion-electrons generated inside the Gd film. The observed efficient thermal neutron detection with the Gd/CdTe detector shows its promise in neutron radiography application. Moreover, a BGaN detector has also investigated to separate neutron signal from gamma-ray clearly. AbstrakDetektor Neutron Termal Semikonduktor. Detektor CdTe dan GaN dengan konverter Gd telah dikembangkan dan diteliti sebagai detektor neutron yang digunakan dalam pencitraan neutron. Detektor Gd/CdTe yang dibuat dengan Gd setebal 25 mm itu dirancang berdasarkan hasil simulasi efisiensi pendeteksian dan resolusi spasial neutron termal. Detektor Gd/CdTe menunjukkan adanya pendeteksian neutron yang menangkap emisi sinar gamma dalam reaksi-reaksi 155 Gd(n, g) 156 Gd, 157 Gd(n, g) 158 Gd, dan 113 Cd(n, g) 114 Cd dan emisi sinar-X yang khas sebagai akibat dari dihasilkannya elektron-elektron konversi dalam film Gd. Dalam aplikasi radiografi neutron, pendeteksian dengan detektor Gd/CdTe yang efisien terhadap neutron termal yang diteliti merupakan temuan yang menjanjikan. Selain itu, diselidiki juga bahwa detektor BGaN dapat memisahkan sinyal neutron dan sinar gamma dengan jelas.

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“…The data were compared with other data from the literature and have been evaluated into the Evaluated Gamma-ray Activation File (EGAF) [1]. Total radiative neutron capture cross-sections σ 0 can be deduced from the sum of transition cross sections feeding the ground state of each isotope if the decay scheme is complete.…”

mentioning

confidence: 99%

Thermal Neutron Capture Cross Sections Of The Palladium Isotopes

Firestone

Krtiáka

McNabb

et al. 2006

AIP Conference Proceedings

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Abstract.We have measured precise thermal neutron capture γ-ray cross sections σ γ for all stable Palladium isotopes with the guided thermal neutron beam from the Budapest Reactor. The data were compared with other data from the literature and have been evaluated into the Evaluated Gamma-ray Activation File (EGAF) [1]. Total radiative neutron capture cross-sections σ 0 can be deduced from the sum of transition cross sections feeding the ground state of each isotope if the decay scheme is complete. The Palladium isotope decay schemes are incomplete, although transitions deexciting low-lying levels are known for each isotope. We have performed Monte Carlo simulations of the Palladium thermal neutron capture de-excitation schemes using the computer code DICEBOX [2]. This program generates a level scheme where levels below a critical energy E crit are taken from experiment, and those above E crit are calculated by a random discretization of an a priori known level density formula ρ(E, J π ). Level de-excitation branching intensities are taken from experiment for levels below E crit and the capture state, or calculated for levels above E crit assuming an a priori photon strength function and applying allowed selection rules and a Porter-Thomas distribution of widths. The calculated feeding to levels below E crit can then be normalized to the measured cross section deexciting those levels to determine the total radiative neutron cross-section σ 0 . In this paper we have measured σ 0 [ 102 Pd(n,γ)]=0.9±0. We have also determined from our statistical calculations that the neutron capture state in 107 Pd is best described as 2 + (60%)+3 + (40%). Agreement with literature values was excellent in most cases. We found significant discrepancies between our results for 102 Pd and 110 Pd and earlier values that could be resolved by re-evaluation of the earlier results.

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Database of prompt gamma rays from slow neutron capture forelemental analysis

Cited by 73 publications

References 27 publications

The Evaluated Gamma-ray Activation File (EGAF)

The Evaluated Gamma-ray Activation File (EGAF)

Semiconductor Thermal Neutron Detector

Thermal Neutron Capture Cross Sections Of The Palladium Isotopes

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