Size Determinations of Plutonium Colloids Using Autocorrelation Photon Spectroscopy

Neutron spectroscopy of plutonium oxide using matrix unfolding approach

The knowledge of a neutron energy spectrum is extremely valuable in nuclear non-proliferation and safeguards applications. Unfortunately, conventional gas and fission-type detectors are not adapted to determine incident neutron energy. As a result, a matrix inversion technique was implemented to generate desirable and consistent neutron energy spectra from an EJ-309 liquid scintillator. To over...

Global analysis of autocorrelation functions and photon counting distributions in fluorescence fluctuation spectroscopy.

In fluorescence correlation spectroscopy (FCS) and photon counting histogram (PCH) analysis, the same experimental fluorescence intensity fluctuations are used, but each analytical method focuses on a different property of the signal. The time-dependent decay of the correlation of fluorescence fluctuations is measured in FCS yielding molecular diffusion coefficients and triplet-state parameters...

Detecting Sedimentary Cycles using Autocorrelation of Grain size

Detection of sedimentary cycles is difficult in fine-grained or homogenous sediments but is a prerequisite for the interpretation of depositional environments. Here we use a new autocorrelation analysis to detect cycles in a homogenous sediment core, E602, from the northern shelf of the South China Sea. Autocorrelation coefficients were calculated for different mean grain sizes at various depth...

Data Analysis of Plutonium Sorption on Colloids in a Minimal Kinetics Model

Sample size determinations in original research

Objectives To assess the completeness of reporting of sample size determinations in unpublished research protocols and to develop guidance for research ethics committees and for statisticians advising these committees. Design Review of original research protocols. Study selection Unpublished research protocols for phase IIb, III, and IV randomised clinical trials of investigational medicinal pr...