Erratum: Photoneutron cross-section measurements in the 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mmultiscripts><mml:mi>Bi</mml:mi><mml:mprescripts /><mml:none /><mml:mn>209</mml:mn></mml:mmultiscripts><mml:mo>(</mml:mo><mml:mi>γ</mml:mi><mml:mo>,</mml:mo><mml:mi>x</mml:mi><mml:mi>n</mml:mi><mml:mo>)</mml:mo></mml:mrow></mml:math>
 reaction with a new method of direct neutron-multiplicity sorting [Phys. Rev. C 96, 044604 (2017)]

Gheorghe, I.; Utsunomiya, H.; Katayama, S.; Filipescu, D.; Белышев, С. С.; Stopani, K. A.; Orlin, V. N.; Варламов, В.В.; Shima, T.; Amano, Sho; Miyamoto, S.; Lui, Y.‐W.; Kawano, Toshihiko; Goriely, Stéphane

doi:10.1103/physrevc.99.059901

Cited by 12 publications

(13 citation statements)

References 9 publications

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“…3, σ −2 values are not significantly affected by contributions above the GDR energy (e.g. recent discrepancies found between the Livermore and Saclay photoneutron data with monochromatic photon beams [20,21] or nucleon resonances at E γ ≳ 140 MeV [22]), and are extremely sensitive measures -unlike σ total -of long-range correlations in the nuclear wave functions.…”

Section: Motivationmentioning

confidence: 95%

How do we infer shell effects at high-excitation energies? A new spectroscopic probe to search for magic numbers

Ngwetsheni

Orce

2019

EPJ Web Conf.

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The nuclear dipole polarizability is mainly governed by the dynamics of the giant dipole resonance and, assuming validity of the brink-Axel hypothesis, has been investigated along with the effects of the low-energy enhancement of the photon strength function for nuclides in medium- and heavy-mass nuclei. Cubic-polynomial fitsto both data sets extrapolated down to a gamma-ray energy of 0.1 MeV show a significantreduction of the nuclear dipole polarizability for semi-magic nuclei, with magic numbers N =28, 50 and 82, which supports shell effects at high-excitation energies in the the quasi-continuum region. This work assigns σ-2 values as sensitive measures of long-range correlations of the nuclear force and provides a new spectroscopic probe to search for “old” and “new” magic numbers at high-excitation energies.

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Section: Motivationmentioning

confidence: 95%

How do we infer shell effects at high-excitation energies? A new spectroscopic probe to search for magic numbers

Ngwetsheni

Orce

2019

EPJ Web Conf.

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“…The interaction produces secondary γ rays, which can induce the giant dipole resonance most effectively in the peak (∼ 13 MeV) region governed by the (γ, n) channel. We previously assigned extra neutrons produced by the secondary γ rays to reaction neutrons of the (γ, n) channel associated with the primary γ rays [16]. Corrections were made for this effect by means of a GEANT4 simulation, resulting in a significant reduction in 209 Bi(γ, n) cross section above 30 MeV [17].…”

Section: Complications In Neutron-multiplicity Sortingmentioning

confidence: 99%

GDR cross sections updated in the IAEA-CRP

et al. 2020

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The Coordinated Research Project (CRP) with the code F41032 has been launched by the International Atomic Energy Agency (IAEA) in 2016 as a 5-year project with the scientific goal being two-fold: 1) updating the 2000 photonuclear data library and 2) constructing a reference database of photon strength functions. We report the experimental technique and methodology used for the former goal and selected giant-dipole resonance (GDR) data updated in the IAEA-CRP.

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“…Data for partial photoneutron reactions (γ, 1n) and (γ, 2n) for 209 Bi were obtained at Livermore [16]. [17] are also presented. One can see that ratios F exp i (γ, in) obtained using new novel technique for all partial reactions satisfy the data reliability criteria: all of those are positive, all F exp i (γ, in) values are smaller than 1.00, 0.50, 0.33, 0.25, correspondingly for i -1, 2, 3, 4.…”

Section: Experimental Partial Photoneutron Reaction Cross Sections Rementioning

confidence: 99%

“…The new measurements of partial photoneutron reaction cross sections for 209 Bi performed at the NewSUBARU synchrotron radiation facility were carried out using the quasi-monochromatic laser Compton-scattering (LCS) γray beams [21,22] and the novel technique of direct neutron-multiplicity sorting with a flat-efficiency detector [17,23]. Partial σ(γ, in) with the neutron-multiplicity i (i = 1, 2, 3, 4. .…”

Section: Patrial Photoneutron Reaction Cross Sections For 209 Bi Measmentioning

confidence: 99%

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New ²⁰⁹Bi photodisintegration data and physical criteria of data reliability

et al. 2020

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The well-known problem of noticeable disagreements between photoneutron cross sections from various experiments was discussed in detail for 209Bi. Data for partial photoneutron reactions cross sections obtained at Livermore (USA) using quasimonoenergetic annihilation photons and the method of neutron multiplicity sorting were analyzed using the objective physical criteria and the experimental-theoretical method for evaluation. Because of significant systematic uncertainties involved in the method for determining the neutron multiplicity, experimental data do not satisfy the criteria of reliability and differ noticeably from the evaluated data. The new experimental data for 209Bi (γ, in) reactions with i = 1–4 were obtained using quasimonochromatic laser Compton-scattering (LCS) γ-ray beams at the NewSUBARU synchrotron radiation facility and the novel technique of direct neutron-multiplicity sorting with a flat-efficiency detector. It was found that new σ(γ, 1n), σ (γ, 2n), and σ (γ, 3n) contradict noticeably to the Livermore data. It was shown that at the same time the new 209Bi photoneutron cross-sections are in good agreement with data evaluated using experimental-theoretical method and assuring the reliability of those.

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Erratum: Photoneutron cross-section measurements in the Bi209(γ,xn) reaction with a new method of direct neutron-multiplicity sorting [Phys. Rev. C 96, 044604 (2017)]

Cited by 12 publications

References 9 publications

How do we infer shell effects at high-excitation energies? A new spectroscopic probe to search for magic numbers

How do we infer shell effects at high-excitation energies? A new spectroscopic probe to search for magic numbers

GDR cross sections updated in the IAEA-CRP

New ²⁰⁹Bi photodisintegration data and physical criteria of data reliability

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Erratum: Photoneutron cross-section measurements in the Bi209(γ,xn) reaction with a new method of direct neutron-multiplicity sorting [Phys. Rev. C 96, 044604 (2017)]

Cited by 12 publications

References 9 publications

How do we infer shell effects at high-excitation energies? A new spectroscopic probe to search for magic numbers

How do we infer shell effects at high-excitation energies? A new spectroscopic probe to search for magic numbers

GDR cross sections updated in the IAEA-CRP

New 209Bi photodisintegration data and physical criteria of data reliability

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New ²⁰⁹Bi photodisintegration data and physical criteria of data reliability