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Bl, Berman; Jt, Caldwell; Ej, Dowdy; Ss, Dietrich; Meyer, P.; Ra, Alvarez

doi:10.1103/physrevc.34.2201

Cited by 69 publications

(63 citation statements)

References 28 publications

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“…The 11 MeV 239 Pu(γ,f) and 197 Au(γ,n) 196 Au cross-section values were taken from Refs. [13] and [10], respectively. The results are given in column two of Table II.…”

Section: Experimental Procedure Analysis and Resultsmentioning

confidence: 99%

Exploratory study of fission product yield determination from photofission of Pu239 at 11 MeV with monoenergetic photons

et al. 2017

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“…The 11 MeV 239 Pu(γ,f) and 197 Au(γ,n) 196 Au cross-section values were taken from Refs. [13] and [10], respectively. The results are given in column two of Table II.…”

Section: Experimental Procedure Analysis and Resultsmentioning

confidence: 99%

Exploratory study of fission product yield determination from photofission of Pu239 at 11 MeV with monoenergetic photons

et al. 2017

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“…We show in Fig. 2 Bremsstrahlung photon beams [12] and photons produced by positron annihilation in flight [16]. Good overall agreement is verified in the whole energy interval.…”

Section: A Case Study: 237 Np(γ F )mentioning

confidence: 68%

“…(i) In the first place, there are several works presenting calculations of fission barrier heights, using semimicroscopic models based on the Strutinsky [26][27][28] and Hartree-Fock [29,30] methods. However, absolute values for barrier heights from these theoretical approaches, are systematically lower than those obtained from the fitting of cross sections by means of statistical model calculations [11][12][13][14][15][16]23,24]. (ii) In the second place, and considering that the uncertainties associated with our measurements [15] are modest, we note that small differences between the selected barrier heights entering our model calculations could eventually destroy the agreement between level groups (and level voids) and the corresponding structures in the measured cross sections.…”

Section: Resultsmentioning

confidence: 99%

“…Thus, our approach strongly depends on accurate calculations of single-particle states for very deformed shapes. In this regard, it is necessary to achieve σ γ, 237 Np measured by three different techniques: neutroncapture γ rays [15], Bremsstrahlung [12], positron annihilation in flight [16], and theoretically calculated photofission cross section (this work).…”

Section: Theoretical Approach and Calculationsmentioning

confidence: 99%

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Role of transitional levels inNp237(γ,f): Perspectives for studying highly deformed systems

Arruda‐Neto¹,

Mesa²,

Garcı́a³

et al. 2006

Phys. Rev. C

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The transition levels at the top of the two 237 Np fission barriers were obtained for the first time by means of the so-called semimicroscopic combined method, which we have developed and implemented. To overcome the difficulties in dealing with large nuclear deformations, we used our developed BARRIER code, which calculates single-particle spectra in a deformed Woods-Saxon potential using a coordinate system based on Cassini ovaloids as nuclear shape parametrization. The results enabled us to describe the experimentally observed near-barrier photofission cross-section structures for 237 Np, as well as a subbarrier shelf, the latter being consistently interpreted in terms of the accumulation of levels at the top of the inner and outer double fission barrier of 237 Np.

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“…Gurevich [21] and de Moraes [22] directly measured the photoabsorption cross section, whereas Berman [23] measured the main partial cross sections. Their sum also gives the total photoabsorption cross section.…”

Section: Plutonium-239mentioning

confidence: 99%

Photonuclear data evaluations of actinides up to 130 MeV

Dupont

Ridikas

2007

Nd2007

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Abstract. There is a renewed interest in photonuclear reactions for various applications such as active nuclear material detection techniques and radioactive ion beam or neutron production targets. However, contrary to the neutron induced reactions, evaluated nuclear data libraries contain little information for photons. In particular, there are very few photonuclear data evaluations of actinides above 20 MeV. This paper gives an overview of our on-going activities on photonuclear data evaluation of actinides up to 130 MeV.

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Photofission and photoneutron cross sections and photofission neutron multiplicities forU233,

Cited by 69 publications

References 28 publications

Exploratory study of fission product yield determination from photofission of Pu239 at 11 MeV with monoenergetic photons

Exploratory study of fission product yield determination from photofission of Pu239 at 11 MeV with monoenergetic photons

Role of transitional levels inNp237(γ,f): Perspectives for studying highly deformed systems

Photonuclear data evaluations of actinides up to 130 MeV

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