TOTAL NEUTRON CROSS-SECTION OF TEFLON BETWEEN 0.00038-EV AND 590-EV

Citation
Gj. Cuello et al., TOTAL NEUTRON CROSS-SECTION OF TEFLON BETWEEN 0.00038-EV AND 590-EV, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 357(2-3), 1995, pp. 519-523
Citations number
9
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
ISSN journal
01689002
Volume
357
Issue
2-3
Year of publication
1995
Pages
519 - 523
Database
ISI
SICI code
0168-9002(1995)357:2-3<519:TNCOTB>2.0.ZU;2-Q
Abstract
The neutron total cross section of Teflon has been measured for energi es between 3.8 X 10(-4) eV and 5.9 X 10(2) eV by the transmission meth od with pulsed neutron time-of-flight techniques. In order to cover th at wide energy range, two independent measurements were performed on s amples with different thicknesses and employing as neutron moderator a conventional polyethylene slab for the epithermal region and a liquid nitrogen cooled paraffin block for the cold/thermal region. Due to so me inhomogeneities in the sample material, the transmission data were normalized using the best available values of the scattering lengths a nd incoherent cross sections for carbon and fluorine.