L. Tumlinson - Academia.edu (original) (raw)
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Papers by L. Tumlinson
Soil Science Society of America Journal, 2008
As for x-rays, neutron radiography is a noninvasive imaging technique based on the attenuation of... more As for x-rays, neutron radiography is a noninvasive imaging technique based on the attenuation of thermal neutrons by the object in question, described by BeerAfAøAøâ_sA¬Aøâ_zAøs law. However, neutron imaging is complementary to x-rays, as it is especially well suited for materials containing hydrogen atoms and mostly other low atomic weight attenuating materials. Although neutron attenuation techniques are routinely used in
Soil Science Society of America Journal, 2008
Abstract: Neutron radiography is a noninvasive imaging technique that measures the attenuation of... more Abstract: Neutron radiography is a noninvasive imaging technique that measures the attenuation of thermal neutrons, as is done with x-ray and γ-ray radiography, to characterize the internal composition of materials. Neutron and x-ray imaging are complementary ...
As for x-rays, neutron radiography is a noninvasive imaging technique based on the attenuation of... more As for x-rays, neutron radiography is a noninvasive imaging technique based on the attenuation of thermal neutrons by the object in question, described by BeerAfAøAøâ_sA¬Aøâ_zAøs law. However, neutron imaging is complementary to x-rays, as it is especially well suited for materials containing hydrogen atoms and mostly other low atomic weight attenuating materials. Although neutron attenuation techniques are routinely used in engineering, relatively little is known about its application to soils. We will present results demonstrating the tremendous potential of using neutron attenuation techniques to measure spatial and temporal distribution of water in soils at the 50 micrometer spatial resolution. The neutron source is a Mark II Triga Reactor at McClellan Nuclear Radiation Center (MNRC) in Sacramento, CA. The reactor runs at 1.8 MW and emits a poly-energetic neutron beam, including the thermal range. Unfortunately beam hardening and backscattering are a major source of uncertainty....
Soil Science Society of America Journal, 2008
As for x-rays, neutron radiography is a noninvasive imaging technique based on the attenuation of... more As for x-rays, neutron radiography is a noninvasive imaging technique based on the attenuation of thermal neutrons by the object in question, described by BeerAfAøAøâ_sA¬Aøâ_zAøs law. However, neutron imaging is complementary to x-rays, as it is especially well suited for materials containing hydrogen atoms and mostly other low atomic weight attenuating materials. Although neutron attenuation techniques are routinely used in
Soil Science Society of America Journal, 2008
Abstract: Neutron radiography is a noninvasive imaging technique that measures the attenuation of... more Abstract: Neutron radiography is a noninvasive imaging technique that measures the attenuation of thermal neutrons, as is done with x-ray and γ-ray radiography, to characterize the internal composition of materials. Neutron and x-ray imaging are complementary ...
As for x-rays, neutron radiography is a noninvasive imaging technique based on the attenuation of... more As for x-rays, neutron radiography is a noninvasive imaging technique based on the attenuation of thermal neutrons by the object in question, described by BeerAfAøAøâ_sA¬Aøâ_zAøs law. However, neutron imaging is complementary to x-rays, as it is especially well suited for materials containing hydrogen atoms and mostly other low atomic weight attenuating materials. Although neutron attenuation techniques are routinely used in engineering, relatively little is known about its application to soils. We will present results demonstrating the tremendous potential of using neutron attenuation techniques to measure spatial and temporal distribution of water in soils at the 50 micrometer spatial resolution. The neutron source is a Mark II Triga Reactor at McClellan Nuclear Radiation Center (MNRC) in Sacramento, CA. The reactor runs at 1.8 MW and emits a poly-energetic neutron beam, including the thermal range. Unfortunately beam hardening and backscattering are a major source of uncertainty....