Angular distributions and anisotropy of the fragments from neutron-induced fission of 233U and 209Bi in the intermediate energy range of 1–200 MeV

Vorobyev, A. S.; Gagarski, A. M.; Shcherbakov, O. A.; Vaishnene, L. A.; Barabanov, A. L.

doi:10.1134/s002136401618003x

Cited by 17 publications

(13 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This work was performed with the use of quasi-monochromatic neutron source. Therefore, it seems appropriate to compare their results with data obtained recently at TOF spectrometers such as GNEIS (PNPI) [1,2], n TOF (CERN) [13][14][15] and WNR (LANSCE) [16]. This analysis gives the possibility to determine anisotropy of angular distribution of fission fragments and estimate systematical errors of used methods and experimental setups.…”

Section: Resultsmentioning

confidence: 99%

“…1. Detailed description of the setup and readout system created on the basis of waveform digitizers can be found in our previous publications [1,2]. It was located at the flight path 5 of the TOF-facility GNEIS [3] at a distance of 36 m from the pulsed neutron source.…”

Section: Methodsmentioning

confidence: 99%

“…For example, in Fig. 2 the fission events collected using the "dynamic" registration threshold are presented [2].…”

Section: Data Processingmentioning

confidence: 99%

“…This correction was obtained by means of additional measurement of 252 Cf spontaneous fission source placed at the same position as the targets of nuclei [2].…”

Section: Data Processingmentioning

confidence: 99%

See 3 more Smart Citations

Angular distributions and anisotropy of fission fragments from neutron-induced fission in intermediate energy range 1–200 MeV

et al. 2017

View full text Add to dashboard Cite

Abstract. Angular distributions of fission fragments from the neutron-induced fission of 232 Th, 233 U, 235 U, 238 U and 209 Bi have been measured in the energy range 1-200 MeV at the neutron TOF spectrometer GNEIS based on the spallation neutron source at 1 GeV proton synchrocyclotron of the PNPI (Gatchina, Russia). The multiwire proportional counters have been used as a position sensitive fission fragment detector. A description of the experimental equipment and measurement procedure is given. The anisotropy of fission fragments deduced from the data on measured angular distributions is presented in comparison with experimental data of other authors, first of all, the recent data from WNR at LANSCE (Los Alamos, USA) and n TOF(CERN).

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Angular distributions and anisotropy of fission fragments from neutron-induced fission in intermediate energy range 1–200 MeV

et al. 2017

View full text Add to dashboard Cite

show abstract

“…We began the study of the angular distributions of FFs in neutron induced fission of heavy nuclei at energies up to 200 MeV in 2014 at the neutron time-of-flight spectrometer GNEIS [1,2] of the Petersburg Nuclear Physics Institute. At the previous ND-2016 conference we presented results for target nuclei 209 Bi, 232 Th, 233 U, 235 U, 238 U [3][4][5]. Currently, similar studies are also carried out by the n_TOF (CERN) [6,7] and NIFFTE (LANSCE) [8] collaborations.…”

Section: Introductionmentioning

confidence: 98%

Angular distributions and anisotropy of fission fragments from neutron-induced fission of²³⁹Pu,²³⁷Np, and^natPb in energy range 1–200 MeV

et al. 2020

View full text Add to dashboard Cite

This work summarizes some results of a series of experiments aimed at the investigation of energy dependence of anisotropy of fission fragments (FFs) in (n, f) reactions for neutron energies from low to intermediate. Angular distributions of FFs from the neutron-induced fission of 239Pu, 237Np, and natPb have been measured in the energy range 1–200 MeV at the neutron TOF spectrometer GNEIS based on the spallation neutron source at 1 GeV proton synchrocyclotron of the Petersburg Nuclear Physics Institute (Gatchina, Russia). The anisotropies of FFs deduced from the measured angular distributions are presented. In the neutron energy range above 20 MeV the results have been obtained for the first time in our works. The experimental data for FF anisotropy in 237Np(n, f) are compared with calculations based on "adapted" TALYS software.

show abstract

Angular distribution of fragments in neutron-induced nuclear fission at energies 1−200 MeV: Data, theoretical models and relevant problems

et al. 2021

View full text Add to dashboard Cite

In recent years, investigations of angular distributions of fragments in neutron-induced nuclear fission have been extended to intermediate energies, up to 200 MeV, as well as to a wide range of target isotopes. Using as an example the latest data obtained by our group for the reaction 237Np(n; f), we discuss the specific features of fission fragment angular distribution and present a method for their simulation based on the code TALYS. It is shown that a simplified model reasonably describes energy dependence of the angular distribution in the whole range 1–200 MeV. The ways to improve the model are discussed along with the possibilities to use it for obtaining new information on fission and pre-equilibrium processes in neutron-nucleus interaction. We consider also the relevant problems of describing fission fragment angular distributions.

show abstract

Angular distributions and anisotropy of the fragments from neutron-induced fission of 233U and 209Bi in the intermediate energy range of 1–200 MeV

Cited by 17 publications

References 9 publications

Angular distributions and anisotropy of fission fragments from neutron-induced fission in intermediate energy range 1–200 MeV

Angular distributions and anisotropy of fission fragments from neutron-induced fission in intermediate energy range 1–200 MeV

Angular distributions and anisotropy of fission fragments from neutron-induced fission of²³⁹Pu,²³⁷Np, and^natPb in energy range 1–200 MeV

Angular distribution of fragments in neutron-induced nuclear fission at energies 1−200 MeV: Data, theoretical models and relevant problems

Contact Info

Product

Resources

About

Angular distributions and anisotropy of the fragments from neutron-induced fission of 233U and 209Bi in the intermediate energy range of 1–200 MeV

Cited by 17 publications

References 9 publications

Angular distributions and anisotropy of fission fragments from neutron-induced fission in intermediate energy range 1–200 MeV

Angular distributions and anisotropy of fission fragments from neutron-induced fission in intermediate energy range 1–200 MeV

Angular distributions and anisotropy of fission fragments from neutron-induced fission of239Pu,237Np, andnatPb in energy range 1–200 MeV

Angular distribution of fragments in neutron-induced nuclear fission at energies 1−200 MeV: Data, theoretical models and relevant problems

Contact Info

Product

Resources

About

Angular distributions and anisotropy of fission fragments from neutron-induced fission of²³⁹Pu,²³⁷Np, and^natPb in energy range 1–200 MeV