Elastic and Inelastic Neutron Scattering Cross Sections for natPb, 209Bi and natTa in the Energy Range from 2 MeV to 4 MeV

被引：5

作者：

Poenitz, Erik ^{[1
]}

Nolte, Ralf ^{[1
]}

Schmidt, Dankwart ^{[1
]}

Chen, Guochang ^{[2
]}

机构：

[1] Phys Tech Bundesanstalt, D-38023 Braunschweig, Germany

[2] China Inst Atom Energy, Beijing 102413, Peoples R China

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2011年 / 59卷 / 02期

关键词：

Elastic scattering; Inelastic scattering; Monoenergetic neutrons;

D O I：

10.3938/jkps.59.1876

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The N-15(p,n) neutron source recently installed at the PTB cyclotron facility was used to measure neutron scattering cross sections at selected energies between 2 MeV and 4 MeV using lead, bismuth, and tantalum samples of natural isotopic composition. Angular distributions for elastic neutron scattering as well as for inelastic scattering involving the low-lying levels of Ta-181, (206,207)Pbi, Bi-209 were determined. Differential cross sections were derived using a full Monte Carlo simulation of the experiment and an iterative adaptation scheme for the differential cross sections to correct for the effect of multiple interactions in the samples and partial overlap of time-of-flight peaks corresponding to adjacent levels. The integrated cross sections agree well with earlier measurements carried out in Studsvik/Sweden. They show, however, significant deviations from recent data for level cross sections derived from measurement from the photoemission cross section.

引用

页码：1876 / 1879

页数：4

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