Neutron total and scattering cross sections of niobium in the continuum region

Journal Article · Mon Jan 01 04:00:00 EST 1973 · Z. Phys., v. 264, no. 5, pp. 379-398

DOI:https://doi.org/10.1007/BF01391707· OSTI ID:4312113

Smith, A B; Guenther, P T; Whalen, J F

Neutron total and elastic and inelastic scattering cross sections of niobium are measured in the incident energy interval 0.25 to 0.5 MeV. Total neutron cross sections are determined to a few per cent accuracy throughout the energy interval. Differential elastic and inelastic neutron scattering cross sections are measured at approximately 20 scattering angles distributed between 20 and 160 deg and at incident neutron energy intervals of 0.1 MeV from 1.8 to 4.0 MeV. The cross sections for the inelastic neutron excitation of 11 states with Q-values of 2,520 keV are quantitatively measured and the excitation of an additional 8 states qualitatively observed. Calculations based upon a selected optical potential give a good description of total neutron cross sections to 20.0 MeV and of elastic scattering cross sections extending from low energies where compound-nucleus processes are prominent to high energies where shape'' scattering predominates. Inelastic neutron scattering cross sections are calculated from the optical potential and statistical theory and comparison with the corresponding experimental values suggests the spins and parities of the low- energy excited states. (GE)

• Research Organization: Argonne National Lab., IL
• NSA Number: NSA-29-019687
• OSTI ID: 4312113
• Journal Information: Z. Phys., v. 264, no. 5, pp. 379-398, Journal Name: Z. Phys., v. 264, no. 5, pp. 379-398; ISSN ZEPYA
• Country of Publication: Germany
• Language: English

Related Subjects

*NEUTRON REACTIONS-- INELASTIC SCATTERING
*NIOBIUM-- NEUTRON REACTIONS
COMPOUND NUCLEI
DIFFERENTIAL CROSS SECTIONS
EXCITATION
KEV RANGE 100-1000
N68651* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
59 <= A <= 89--Nuclear Reactions & Scattering
NUCLEAR POTENTIAL
OPTICAL MODELS
PARITY
Q-VALUE
SPIN
STATISTICS
TOTAL CROSS SECTIONS