Low-energy modification of the 
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 strength function of the odd-even nucleus 
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Versteegen, M.; Denis-Petit, D.; Méot, V.; Bonnet, T.; Comet, M.; Gobet, F.; Hannachi, F.; Tarisien, M.; Morel, Pascal; Martini, M.; Péru, S.

doi:10.1103/physrevc.94.044325

Cited by 9 publications

(3 citation statements)

References 54 publications

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“…Many calculations with the deformed QRPA method with Gogny interactions have been performed in the recent years, some of them with direct applications to nuclear astrophysics. For example, low-lying excitation energies, pygmy and giant resonances, electromagnetic multipole excitations and response functions, gamma-ray strength functions, reaction crosssections, etc, in nuclei all along the nuclear chart have been studied and compared with experimental data where available [2,[141][142][143][144][145][146][147][148][149][150][151][152][153][154]. In addition, Gamow-Teller (GT) response has been also computed with a proton-neutron QRPA method in [58,155].…”

Section: The Qrpamentioning

confidence: 99%

Mean field and beyond description of nuclear structure with the Gogny force: a review

Robledo¹,

Rodríguez²,

Rodrı́guez-Guzmán³

2018

J. Phys. G: Nucl. Part. Phys.

196

155

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Nowadays, the Gogny force is a referent in the theoretical description of nuclear structure phenomena. Its phenomenological character manifests in a simple analytical form that allows for implementations of techniques both at the mean field and beyond all over the nuclide chart. Over the years, multiple applications of the standard many-body techniques in an assorted set of nuclear structure applications have produced results which are in a rather good agreement with experimental data. The agreement allows for a simple interpretation of those intriguing phenomena in simple terms and gives confidence on the predictability of the interaction. The present status on the implementation of different many-body techniques with the Gogny force is reviewed with a special emphasis on symmetry restoration and large amplitude collective motion.

show abstract

Section: The Qrpamentioning

confidence: 99%

Mean field and beyond description of nuclear structure with the Gogny force: a review

Robledo¹,

Rodríguez²,

Rodrı́guez-Guzmán³

2018

J. Phys. G: Nucl. Part. Phys.

196

155

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“…В останній час помітно зріс інтерес до вивчення збудження ізомерних станів ядер в реакціях (γ, γ ′ ), як з точки зору вивчення їх механізмів збудження та уточнення перерізів збудження реакцій (γ, γ ′ ) m , так і з метою їх прикладного використання в т.ч. в активаційних аналізах [2][3][4]. Відомо, що реакції (γ, γ ′ ) m йдуть зі значною ймовірністю при енергіях гамма-квантів нижче порогів (γ, n) або (γ, p) реакцій, які є джерелом утворення радіоактивних ядер і відповідно заважаючого гамма-фону.…”

Section: вступunclassified

Investigation of the 11/2-isomeric state excitation of the 137Ba nucleus in the (γ, γ')m reaction

Mazur¹,

Bigan²,

Деречкей³

et al. 2019

Sci.Herald.Uzh.Univ.Ser.Phys

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ДОСЛІДЖЕННЯ ЗБУДЖЕННЯ ІЗОМЕРНОГО СТАНУ 11/2 − ЯДРА 137 Ва В РЕАКЦІЇ (γ, γ ′ ) m Виконане теоретичне та експериментальне дослідження перерізу збудження ізомерного стану 11/2 − ядра 137 Ва в реакції (γ, γ ′ ) m . Експериментальне дослідження проводилося на гальмівному пучку мікротрону М-30 в області енергій 4-17 МеВ. Ключові слова: атомне ядро, ядерні реакції, переріз, гігантський дипольний резонанс, гальмівний гаммаспектр, ізомерне відношення. INVESTIGATION OF THE 11/2 − ISOMERIC STATE EXCITATION OF THE 137 Ba NUCLEUS IN THE (γ, γ ′ ) m REACTION Purpose. To determine the (γ, γ ′ ) m reaction cross section dependence on the gamma-quanta energy for the 137 Ba nucleus. Methods.Activation analysis used for the measurement of the reaction output channels. Results.This paper presents measurement results for the experimental determination of the 137 Ba(γ, γ ′ ) 137m Ba reaction cross section in the region E γmax = 5−18 MeV for the maximum energies of the bremsstrahlung gamma-spectra. The work was performed on a beam of M-30 microtron electron accelerator Bremsstrahlung gamma rays. The energy dispersion of the accelerated electrons was ± (5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) keV. The induction of the magnetic field of the accelerator and the corresponding energy of the accelerated electrons were determined by the method of nuclear magnetic resonance, and the measurement error did not exceed ±0.1%. The experimental yield curve of the reaction 137 Ba(γ, γ ′ ) 137m Ba was measured in 0.5 MeV increments and was used to calculate the cross section σ m (E) of the reaction (γ, γ ′ ) m . Calculations of σ m (E) were performed by the Penfold-Leiss method. The obtained experimental results were compared with theoretical calculations performed using the TALYS-1.9 software. Conclusion. In the obtained cross-sections a peak can be observed with a maximum of 0.8 mb at 7.0 MeV, and a smaller peak with a maximum at 15 MeV. The observation, that the theoretical cross section closely follows the experimental data points to the domination of the statistical mechanism in the (γ, γ ′ ) m reaction.

show abstract

“…Many calculations with the deformed QRPA method with Gogny interactions have been performed in the recent years, some of them with direct applications to nuclear astrophysics. For example, low-lying excitation energies, pygmy and giant resonances, electromagnetic multipole excitations and response functions, gamma-ray strength functions, reaction cross-sections, etc., in nuclei all along the nuclear chart have been studied and compared with experimental data where available [141,142,143,144,145,146,147,2,148,149,150,151,152,153,154]. In addition, Gamow-Teller response has been also computed with a proton-neutron QRPA method in Refs.…”

Section: The Qrpamentioning

confidence: 99%

Mean field and beyond description of nuclear structure with the Gogny force: A review

Robledo,

Rodríguez,

Rodríguez-Guzmán

2018

Preprint

View full text Add to dashboard Cite

Nowadays, the Gogny force is a referent in the theoretical description of nuclear structure phenomena. Its phenomenological character manifests in a simple analytical form that allows for implementations of techniques both at the mean field and beyond all over the nuclide chart. Over the years, multiple applications of the standard many-body techniques in an assorted set of nuclear structure applications have produced results which are in a rather good agreement with experimental data. The agreement allows for a simple interpretation of those intriguing phenomena in simple terms and gives confidence on the predictability of the interaction. The present status on the implementation of different many body techniques with the Gogny force is reviewed with a special emphasis on symmetry restoration and large amplitude collective motion.

show abstract

Low-energy modification of the γ strength function of the odd-even nucleus In115

Cited by 9 publications

References 54 publications

Mean field and beyond description of nuclear structure with the Gogny force: a review

Mean field and beyond description of nuclear structure with the Gogny force: a review

Investigation of the 11/2<sup>-</sup>isomeric state excitation of the <sup>137</sup>Ba nucleus in the (γ, γ')<sup>m</sup> reaction

Mean field and beyond description of nuclear structure with the Gogny force: A review

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Low-energy modification of the γ strength function of the odd-even nucleus In115

Cited by 9 publications

References 54 publications

Mean field and beyond description of nuclear structure with the Gogny force: a review

Mean field and beyond description of nuclear structure with the Gogny force: a review

Investigation of the 11/2<sup>-</sup>isomeric state excitation of the <sup>137</sup>Ba nucleus in the (&#947;, &#947;')<sup>m</sup> reaction

Mean field and beyond description of nuclear structure with the Gogny force: A review

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Investigation of the 11/2<sup>-</sup>isomeric state excitation of the <sup>137</sup>Ba nucleus in the (γ, γ')<sup>m</sup> reaction