Slowing Down and Diffusion Measurements by Pulsed Neutron Techniques
نویسندگان
چکیده
منابع مشابه
Temporal networks: slowing down diffusion by long lasting interactions
Interactions among units in complex systems occur in a specific sequential order, thus affecting the flow of information, the propagation of diseases, and general dynamical processes. We investigate the Laplacian spectrum of temporal networks and compare it with that of the corresponding aggregate network. First, we show that the spectrum of the ensemble average of a temporal network has identi...
متن کاملA Mathematical Realization of Entropy through Neutron Slowing Down
Abstract: The slowing down equation for elastic scattering of neutrons in an infinite homogeneous medium is solved analytically by decomposing the neutron energy spectrum into collision intervals. Since scattering physically smooths energy distributions by redistributing neutron energy uniformly, it is informative to observe how mathematics accommodates the scattering process, which increases e...
متن کاملPULSED MEASUREMENTS Techniques for Pulsed S - Parameter Measurements
Many devices, particularly power devices, are not designed to operate continuously or with CW signals. This is especially true when devices are being tested on-wafer, where the thermal resistance is greatly increased [1]. In these cases, S-parameter measurements are best performed in a pulsed test environment. The details of pulsed measurement are greatly dependent on the pulse properties being...
متن کاملNondestructive Assay Measurements Using the RPI Lead Slowing-Down Spectrometer
The use of a lead slowing-down spectrometer (LSDS) is considered as a possible option for nondestructive assay of fissile material of used nuclear fuel. The primary objective is to quantify fissile isotopes, particularly 239Pu and 235U, via a direct measurement distinguishing them through their characteristic fission spectra in the LSDS. In this paper, we present several assay measurements perf...
متن کاملContribution of rotational diffusion to pulsed field gradient diffusion measurements.
NMR diffusion experiments employing pulsed field gradients are well established as sensitive probes of the displacement of individual nuclear spins in a sample. Conventionally such measurements are used as a measure of translational diffusion, but here we demonstrate that under certain conditions rotational motion will contribute very significantly to the experimental data. This situation occur...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan
سال: 1961
ISSN: 0004-7120
DOI: 10.3327/jaesj.3.634