Capture Cross Sections and Gamma-Ray Spectra from the Interaction of 0.5- to 3.0-MeV Neutrons with Nuclei in the Mass Range<i>A</i>= 45 to 238

Voignier, J.; Joly, Simon; Grenier, G.

doi:10.13182/nse91-92n

Cited by 44 publications

(39 citation statements)

References 9 publications

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“…Capture gamma-ray spectrum of 127 I in the neutron energy region from 15 to 100 keV. Previous measurement [18] is compared with the present results. 133 Cs at a neutron energy of 500 keV.…”

Section: Capture Gamma-ray Spectramentioning

confidence: 80%

Measurement of keV-neutron capture cross sections and capture gamma-ray spectra of Cs-133 and I-127

et al. 2017

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Abstract. The neutron capture cross sections and the capture gamma-ray spectra of 127 I and 133 Cs at incident neutron energies from 15 to 100 keV have been measured by the time-of-flight method. Capture gammarays were detected with an anti-Compton NaI(Tl) spectrometer, and the pulse-height weighting technique was applied to derive capture yields. The capture cross sections of 127 I and 133 Cs were determined using the standard capture cross section of 197 Au. The total errors of the cross sections were 3.8-5.1%. The obtained cross sections were compared with evaluated values in JENDL-4.0 and ENDF/B-VII.1. For 127 I, the energy dependence is different between the present results and the evaluations. For 133 Cs, the evaluated values in JENDL-4.0 agree with the present results but the evaluated values in ENDF/B-VII.1 are smaller than the present results by 14%-18%. The capture gamma-ray spectra of 133 Cs and 127 I were derived by unfolding the pulse height spectra with detector response functions.

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“…Capture gamma-ray spectrum of 127 I in the neutron energy region from 15 to 100 keV. Previous measurement [18] is compared with the present results. 133 Cs at a neutron energy of 500 keV.…”

Section: Capture Gamma-ray Spectramentioning

confidence: 80%

Measurement of keV-neutron capture cross sections and capture gamma-ray spectra of Cs-133 and I-127

et al. 2017

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“…7 Neutron capture cross sections of 197 Au compared to the ENDF/B-VI.8, the result by the EGLO method and to the experimental data Fig. 10 Gamma spectra of 127 I(n,) compared to the result of the EGLO method and to the experimental data 10) ized to the measured values shown in Table 4. Neutron numbers of each nuclide are 74 and 78 which are close to the magic number 82.…”

Section: Resultsmentioning

confidence: 99%

“…11 Gamma spectra of 133 Cs(n,) compared to the result of the EGLO method and to the experimental data 10) Fig. 12 Gamma spectra of 93 Nb(n,) compared to the result of the EGLO method and to the experimental data Bi by using the nuclear reaction model code Empire-2.19.…”

Section: Discussionmentioning

confidence: 99%

“…[7][8][9][10][11] The bumps shown at around 5.5 MeV were known as the pygmy resonance which has an origin from electric transitions. The theoretical descriptions for them have been given by the density vibration model 27) which is similar to the nuclear dipole vibration 28,29) or microscopic analysis.…”

Section: Analysis Of Anomalous Bumps 1 Pygmy Resonancementioning

confidence: 99%

“…The representative example is the anomalous bump shown in the experiments of the capture gamma-ray spectra. [7][8][9][10][11][12][13] According to a theoretical analysis and experiments, the bump could be considered to have the electric or magnetic properties of decaying gamma similar to the giant electric or magnetic resonances. So far, the bump has not been regarded as an essential nuclear property because it does not TECHNICAL MATERIAL affect significantly the capture cross sections, nor does it provide a sufficient enhancement of the high energy gammarays observed in the experiments.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Evaluation of Neutron Capture Gamma-ray Spectra for 89Y, 93Nb, 127I, 133Cs, 141Pr, 197Au, natTl, and 209Bi

KIM

LEE

2007

J. Nucl. Sci. Technol.

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The neutron capture gamma-ray spectra for 8 nuclides, 89 Bi, were calculated by using the Hauser-Feshbach statistical model, and their results were compared with the available experimental data. Two dominant ingredients to perform the statistical calculation were the level densities described by the Gilbert-Cameron approach with an improved systematics, and the gamma-ray transmission coefficients described by gamma-ray strength functions. Although various gamma-ray strength functions with a Lorentzian formula have been developed by using the photonuclear data or a microscopic analysis, they have failed to reproduce the occasional anomalous bumps observed near or below a neutron binding. In this work, we could reproduce the bumps well by adding a Lorentzian with an energy-temperature dependent width into a giant electric dipole resonance with an enhanced generalized Lorentzian. In addition, we introduced a correction function so as to compensate for the shortcomings due to missing levels or level-cuts.

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Cross section measurements for 141Pr(n,γ)142Pr reaction at neutron energies from 13.5 to 14.8 MeV

Luo

Han

Liu

et al. 2012

J Radioanal Nucl Chem

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Capture Cross Sections and Gamma-Ray Spectra from the Interaction of 0.5- to 3.0-MeV Neutrons with Nuclei in the Mass RangeA= 45 to 238

Cited by 44 publications

References 9 publications

Measurement of keV-neutron capture cross sections and capture gamma-ray spectra of Cs-133 and I-127

Measurement of keV-neutron capture cross sections and capture gamma-ray spectra of Cs-133 and I-127

Evaluation of Neutron Capture Gamma-ray Spectra for 89Y, 93Nb, 127I, 133Cs, 141Pr, 197Au, natTl, and 209Bi

Cross section measurements for 141Pr(n,γ)142Pr reaction at neutron energies from 13.5 to 14.8 MeV

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