Description of (n, p) and (n, 2n-activation cross sections for medium-mass nuclei within statistical multistep theory

Kalka, Harald; Torjman, M.; Lien, H. N.; López, R.; Seeliger, D.

doi:10.1007/bf01294471

Cited by 3 publications

(2 citation statements)

References 27 publications

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“…For angular distributions additionally the "leading-particle" assumption is necessary [6], which was not used here. Thus in the present approach, angular distributions are calculated phenomenologically [11,12] adopting the Klabach-Mann systematics [23].…”

Section: Smd Cross Sectionmentioning

confidence: 99%

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Statistical multistep reactions from 1 to 100 MeV

Kalka

1992

Z. Physik A - Hadrons and Nuclei

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Section: Smd Cross Sectionmentioning

confidence: 99%

“…Whereas the mean squared matrix elements on the lhs of (28) contain both actors and spectators, the matrix elements on the rhs contain the two actors only. For the latter, applying the wave functions (12) to (14) and the two-body interaction (1), simple analytical expressions are obtained, …”

Section: A-body Forces and Mean Squared Matrix Elementsmentioning

confidence: 99%

Statistical multistep reactions from 1 to 100 MeV

Kalka

1992

Z. Physik A - Hadrons and Nuclei

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Nucleogenic production of Ne isotopes in Earth's crust and upper mantle induced by alpha particles from the decay of U and Th

Leya¹,

Wieler²

1999

J. Geophys. Res.

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Abstract. The production of nucleogenic Ne in terrestrial crust and upper mantle by alpha particles from the decay of U and Th was calculated. The calculations are based on stopping powers for the chemical compounds and thin-target cross sections. This approach is more rigorous than earlier studies using thick-target yields for pure elements, since our results are independent of limiting assumptions about stopping-power ratios. Alpha induced reactions account for >99% of the Ne production in the crust and for most of the 2ø'21Ne in the upper mantle. On the other hand, our 22Ne value for the upper mantle is a lower limit because the reaction 25Mg(n, ot)22Ne is signifi-

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Investigation of the Shell Effect on Neutron Induced Cross Section of Actinides

Muhammed¹,

Onimisi²,

Jonah³

2012

JNPP

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Investigations has been made concerning the development of the effect of shell structure on neutron induced cross section, evaluations for Actinides elements in the energy range of 0-30 MeV. The EXIFON code, which is based on the analytical model for statistical multistep direct and multistep compound reactions, was used for the calculation of the cross section for (n-2n), (n-p) and (n-α) reaction channels. Results are compared with data from the experimental database, EXFOR from the IAEA nuclear data bank to deduce the shell effect. An empirical relation for the reaction cross section has been established for magic numbers nucleus in the (n-2n) reaction channel in the energy range. Results shows that the odd-even effect has also been observed as the cross section for odd-even nuclei are higher than their neighbouring even-even nuclei and with comparison in term of Shell correction, the cross section is higher when the Shell correction is not considered.

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Description of (n, p) and (n, 2n-activation cross sections for medium-mass nuclei within statistical multistep theory

Abstract: A unique description of (n, p) and (n, 2n) activation cross sections as well as emission spectra is proposed within a pure multistep approach. Calculations are presented for 8 nuclei (A = 47... 65) in the incident energy range from zero up to 20 MeV.

Cited by 3 publications

References 27 publications

Statistical multistep reactions from 1 to 100 MeV

Statistical multistep reactions from 1 to 100 MeV

Nucleogenic production of Ne isotopes in Earth's crust and upper mantle induced by alpha particles from the decay of U and Th

Investigation of the Shell Effect on Neutron Induced Cross Section of Actinides

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