Neutron cross section of236Pu

Gromova, E. A.; Kovalenko, S. S.; Selitskii, Yu.A.; Fridkin, A. M.; Funshtein, V.B.; Yakovlev, V. A.; Antipov, S. V.; Vorotnikov, P.E.; Gokhberg, B.M.; Danichev, V. V.; Dement'ev, V. N.; Zenkevich, V. S.; Isakov, S. A.

doi:10.1007/bf02074090

Cited by 11 publications

(3 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The first remark that we can make is about the generally good agreement between our results and the evaluated curves with the notable exception of the 243 Pu(n, f ) reaction. Standard fission-cross section evaluations include this isotope among the nonfissile nuclei, a fact invalidated by the present barrier height values, which are deduced from the 242 Pu(t, pf ) reaction and much [41], and JENDL-4.0 [42]) and to recent measurements by Tovesson et al [43], Laptev et al [44], Fursov et al [45], and Gromova et al [46]. smaller than the neutron emission threshold (refer to 244 Pu* in Table II).…”

Section: Fission Cross Sections Calculated Over a Suite Of Pu Isotmentioning

confidence: 98%

“…(45) and (46) for the strength functions are mainly from theoretical considerations and the total radiation widths calculated in this way broadly agree (within 10% to 20%) with measured radiation widths, we have made a further empirical adjustment to them so that for 240 Pu + n the calculation is in very close agreement with the radiation width measurement by Harvey et al [38] at the 1.06-eV resonance; this appears to be the most accurate radiation width measurement available in the literature.…”

Section: -14mentioning

confidence: 99%

See 1 more Smart Citation

R-matrix analysis and prediction of low-energy neutron-induced fission cross sections for a range of Pu isotopes

2013

View full text Add to dashboard Cite

Neutron-induced fission cross sections for the plutonium isotopes from 236 to 244 are computed for neutrons of a few keV up to 5.5 MeV incident energy, using the Hauser-Feshbach statistical theory of nuclear reactions, modified to treat the fission decay channel in the R-matrix formalism. The fluctuations of the fission decay widths owing to the presence of intermediate structures in the second well and to the coupling of class I and class II states are simulated by Monte Carlo sampling of the underlying model parameter distributions. The accuracy of this approach is tested relative to the results of well-known analytical formulations for the average fission cross sections. Special attention is paid to the choice and consistency of the model input parameters, in part obtained from microscopic nuclear structure calculations. The predictive capabilities offered by our method are tested against the neutron-induced fission of the very short-lived 243 Pu (τ 1/2 = 4.95 h) for which no measurement exist. Our calculations, consistent over all the Pu isotope series, demonstrate that 243 Pu is fissile, in contrast to what is reported in the standard ENDF/B-VII.1 and JEFF-3.1.2 evaluated libraries. No recommendations are made in the JENDL-4.0 data library for this isotope.

show abstract

Section: Fission Cross Sections Calculated Over a Suite Of Pu Isotmentioning

confidence: 98%

Section: -14mentioning

confidence: 99%

R-matrix analysis and prediction of low-energy neutron-induced fission cross sections for a range of Pu isotopes

2013

View full text Add to dashboard Cite

show abstract

“…1). More specifically, only one dataset exists for neutron energies up to 9.5 MeV [2] and a few around 14.5 MeV with large discrepancies among them [3][4][5][6][7]. These datasets are mainly deduced by measuring the α-particles of the 236 Pu decay after chemical separation of Pu from Np and using 239 Pu/ 242 Pu tracers.…”

Section: Introductionmentioning

confidence: 99%

Attempted study of the 237Np(n,2n)236Np reaction cross section at 9.5 MeV

Diakaki¹,

Vlastou²,

Kokkoris³

et al. 2019

hnps

View full text Add to dashboard Cite

The cross section measurement of the 237 Np(n,2n) 236 Np reaction has been attempted at an incident neutron energy of 9.5 MeV by means of the activation technique. The neutron beam was produced via the 2 H(d,n) 3 Ηe reaction at the VdG Tandem accelerator of NCSR "Demokritos". It is the second time that this measurement has been tried with a gamma spectroscopy method and the difficulties faced due to the high gamma ray background produced by the sample itself and the fission fragments produced by the irradiation, in combination with the very low intensity of the gamma ray of interest are being reported.

show abstract

Pu isotopes

Sukhoruchkin¹,

Soroko²,

Deriglazov³

Landolt-Börnstein - Group I Elementary Particles, Nuclei and Atoms

View full text Add to dashboard Cite

Neutron cross section of236Pu

Cited by 11 publications

References 3 publications

R-matrix analysis and prediction of low-energy neutron-induced fission cross sections for a range of Pu isotopes

R-matrix analysis and prediction of low-energy neutron-induced fission cross sections for a range of Pu isotopes

Attempted study of the 237Np(n,2n)236Np reaction cross section at 9.5 MeV

Pu isotopes

Contact Info

Product

Resources

About