Transmittance measurements of cold neutrons for some materials by means of neutron radiography

Autor:	Kenji Yoneda, Masahiro Oda, Hisao Kobayashi, Masayoshi Tamaki, Akira Tsuruno
Rok vydání:	1996
Předmět:	Physics Nuclear and High Energy Physics business.industry Neutron imaging Function (mathematics) Computer Science::Robotics Optics Transmission (telecommunications) Transmission curve Attenuation coefficient Transmittance Neutron Linear approximation business Instrumentation
Zdroj:	Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 377:72-75
ISSN:	0168-9002
DOI:	10.1016/0168-9002(96)00146-5
Popis:	We examined cold neutron radiography (CNR) to determine its characteristics with respect to the ability to obtain the quantitative measurements. In order to describe the complicated transmission phenomena in CNR, a thickness dependent attenuation coefficient μ ( t ) is introduced instead of an average attenuation coefficient. A simple function using a linear approximation model to μ ( t ) is proposed to express transmission curves in CNR. This function agreed well with the experimental data for materials having deep and shallow Bragg cutoffs and for a 1 / ν dependent material. Thus, the linear approximation to μ ( t ) is effective for describing the transmission phenomena in CNR.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::aa469e7347c2473938a77ec2315c7fd2 https://doi.org/10.1016/0168-9002(96)00146-5 Zobrazit plný text záznamu Full Text from ScienceDirect