Levels of 133Cs Excited by Means of (n, n' γ) Reaction

Kikuchi, Satoshi; Yamanouti, Y.; Nishimura, Kazuaki

doi:10.1143/jpsj.28.1089

Cited by 5 publications

(3 citation statements)

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“…Neutron Nuclear Data Evaluation of Cesium Isotopes for JENDL-4.0 crete inelastic scattering of 133 Cs with experimental data of Kikuchi 54) and the evaluated libraries. [8][9][10] It is noted that the experiment 54) yielded data below the threshold energy, which is due to the spread in neutron energy.…”

Section: Inelastic Scattering Cross Sectionmentioning

confidence: 99%

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Neutron Nuclear Data Evaluation of Cesium Isotopes for JENDL-4.0

Iwamoto

2011

Journal of Nuclear Science and Technology

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For the development of JENDL-4.0, neutron nuclear data for fission product nuclides, 133;134;135;136;137 Cs, were revised in the incident neutron energy range from 1 eV to 20 MeV by using a coupled-channels optical model (OM), and nuclear reaction models. The OM potential parameters were determined for stable 133 Cs to reproduce the experimental data of total and elastic scattering cross sections and angular distributions of elastically scattered neutrons. The present results reasonably reproduce measured data for (n; 2n), (n; p), (n; ), and capture reactions on 133 Cs. Cs production is marginally consistent with measured data. However, a large discrepancy is recognized for 138m Cs production. The -ray emission data were evaluated with available measurements, and newly compiled in JENDL-4.0. Maxwellian-averaged capture cross sections were calculated in the energy range from 1 to 10 3 keV, and are compared with other derived data.

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Section: Inelastic Scattering Cross Sectionmentioning

confidence: 99%

“…[8][9][10] It is noted that the experiment 54) yielded data below the threshold energy, which is due to the spread in neutron energy. In the JENDL-4.0 evaluation, the 941.6 keV level was adopted as the highest discrete level of 133 Cs, above which the levels were assumed to be continuous.…”

Section: Inelastic Scattering Cross Sectionmentioning

confidence: 99%

Neutron Nuclear Data Evaluation of Cesium Isotopes for JENDL-4.0

Iwamoto

2011

Journal of Nuclear Science and Technology

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“…The estimate u : = 6.0 x (0".01)' suggests that the observational error of each coordinate of the pole is about +0".017 which is similar to the estimate by Walker & Young (1957, We can compare SA$(fo) with the power density of the meteorological excitation functions of the Chandler wobble. The meteorological excitation functions were given by Hassan (1960); Kikuchi (1975) and Wilson & Haubrich (1976a). We computed the power densities of the non-seasonal part by using the data given by Hassan for the period 1900 to 1950 and These estimates are almost consistent with the result given by Ooe & Goto (1976) and a little smaller than the result obtained by Wilson & Haubrich (1976a).…”

Section: Ooementioning

confidence: 99%

An optimal complex AR.MA model of the Chandler wobble

Ooe

1978

Geophys J Int

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summary. The character of the Chandler wobble suggests that the optimal representation of the observed polar motion is a complex AR.MA model. This paper develops the theory of such a model and presents a modification of the scalar AR.MA computer program of Akaike, Arahata & Ozaki. The complex AR.MA model is applied to the ILS data covering the period 1900–1975. An optimal AR.MA (1,4) model is obtained. The model parameters are interpreted to give a Chandler frequency of 0.8400 ± 0.0039 cpy a Q value of 50 < Q < 300, with the most probable value of 96 and the power density of the excitation to be about 0.51 × (0″.01)2/cpy. This result leads to the conclusion that the contribution of meteorological sources to the excitation of the Chandler wobble is about 11 to 19 per cent.

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Energy levels of 133Cs excited by means of the (n, n′γ) reaction

Kikuchi¹

1971

Nuclear Physics A

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Levels of ¹³³Cs Excited by Means of (n, n' γ) Reaction

Cited by 5 publications

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Neutron Nuclear Data Evaluation of Cesium Isotopes for JENDL-4.0

Neutron Nuclear Data Evaluation of Cesium Isotopes for JENDL-4.0

An optimal complex AR.MA model of the Chandler wobble

Energy levels of 133Cs excited by means of the (n, n′γ) reaction

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